Adobe Community : Unanswered Discussions - PDF Language and Specifications

What should be the behavior of Background with shfil

forums_noreply@adobe.com — Thu, 13 Nov 2014 12:01:44 GMT

I have a simple PostScript file that uses a Radial shading dictionary and shfill operator.

</PageSize [300 300]>> setpagedevice

10 10 moveto

290 10 lineto

290 290 lineto

10 290 lineto

closepath

/DeviceCMYK setcolorspace

0 1 0 0 setcolor

fill

newpath

20 20 moveto

280 20 lineto

280 280 lineto

20 280 lineto

closepath

clip

95 20 translate

gsave

/ShadingType 3

/Coords [25 100 90 -10 75 0]

/Extend [false false]

/Background [0.35 0.35 0 0]

/ColorSpace /DeviceCMYK

/Function <<

/FunctionType 2

/Domain [0 1]

/C0 [0 0 0.50 0]

/C1 [0 0.50 0.50 0]

/N 1

shfill

grestore

showpage

When i drag this PostScript file in Adobe Distiller 11, it generates a PDF file contains the Background entry in the shading dictionary.

As per PLRM, shfill operator must ignore the Background entry if present.

is it correct?

Thanks

Raquib

Axial shading pattern with different alpha

forums_noreply@adobe.com — Tue, 11 Nov 2014 16:51:57 GMT

Hi,

I'm trying to apply different alpha values to axial shading pattern when drawing and I've found PDF Axial Shading Pattern ranging opacity very helpful.

But what kind of soft mask (PDF 1.4) should I use (dictionary or image mask)? And how could I create that mask?

I wrote some pdf code based on my limited understanding of pdf 1.4 reference and that doesn't work.

40 0 obj

<</Type /Group

/Subtype /Transparency

/ColorSpace /DeviceGray

/BitsPerComponent 8>>

stream

333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333 3333333333333333333333333333333333333333333333333333333333333

endstream

endobj

17 0 obj

<</Type /Mask

/Subtype /Alpha

/G 40 0 R

endobj

18 0 obj

<</Type /ExtGState

/SMask 17 0 R

/ca 1

...

19-26 are FunctionType 2 linear gradient

...

26 0 obj

<</FunctionType 3

/Domain [0 1]

/Functions [19 0 R 20 0 R 21 0 R 22 0 R 23 0 R 24 0 R 25 0 R ]

/Bounds [0.25 0.25 0.5 0.5 0.75 0.75 ]

/Encode [0 1 0 1 0 1 0 1 0 1 0 1 0 1 ]

endobj

27 0 obj

<</Type /Pattern

/PatternType 2

/Shading <</ColorSpace /DeviceRGB

/Function 26 0 R

/ShadingType 2

/Coords [37.5 3347.82 187.5 3347.82]

/Extend [true true]>>

/ExtGState <<

/GS0 18 0 R

CIDFont and PDF

forums_noreply@adobe.com — Tue, 11 Nov 2014 14:20:43 GMT

Hi,

thanks to the lrosenth for the help with my question about support for CID keyed Type1 fonts in PDF.

I will make sure that I read the ISO PDF spec - it is more clear.

Sadly, I have another question:

I have a valid CIDFont (consists of a readable PS part and also binary data which I believe is _parts_ of a CFF font program, not the whole program).

The readable PS part has info like byte offsets to CharStrings and also the table that maps CID values to font/glyph (CIDMap)

The FreeType library will render glyphs from this font.

The binary parts appear to be the CIDMap and CharStrings etc - but not the usual CFF header stuff - ie. just the bits you need.

My question: Am I right that you cant put such a CIDFont in a PDF file as an embedded font program (as part of a composite CIDFontType0) ?

From my reading of the spec, a composite font (Type0) in PDF references a CIDFont dict that doesn't have any of the info that the PS CIDFont contains (such as byte offsets to charstring data etc)

and so it needs the complete CFF program - specified as /FontFile3 in the font descriptor.

regards

JLM

PDF CID keyed font support

forums_noreply@adobe.com — Mon, 10 Nov 2014 12:00:44 GMT

Hi,

I understand that PDF supports embedded CFF font programs for composite fonts of type CIDFontType0 - the spec is clear.

But, does it support embedded font programs that are not CFF - ie. CIDFont with type 1 descendent for example?

The spec only mentions CFF when talking about type 1 composite fonts, but it isn't totally clear.

So, does PDF support embedded non-CFF programs for composite type 1 fonts?

regards

Steve

Changing creation date on adobe acrobat 9

forums_noreply@adobe.com — Wed, 05 Nov 2014 23:23:00 GMT

I've got a folder full of old PDF files at work. They are all labeled DD-MM-YY to signify the date they were made but the pdf's were originally in Word format and when they were all converted to PDF's, they all took that day as their created date. I'm looking for a way to change the created date on these hundreds of PDF's to match the date in the file name. Is there an easy way to do this? I have to print the documents and organize them chronologically by date. However, I need to also have corresponding creation dates with the documents. I'm not good with scripting or programming however I am great at following step by step directions. I would greatly appreciate help on this since this is a semi time sensitive project.

Thank you.

when I clciked on the file to open it asked me to opne or save but i clciked on open it automatically a folder was opened path :->>windows->>Temporary Internet Files ->Content.IES->>

forums_noreply@adobe.com — Mon, 03 Nov 2014 07:21:59 GMT

Hi Guys,

Please let me know why it is opening like this?

Is a zero length glyf table valid for a TTF subset?

forums_noreply@adobe.com — Fri, 24 Oct 2014 06:02:10 GMT

I've posted related queries in a few forums - there is some background info at https://forums.adobe.com/thread/1611899 and it was suggested I ask the experts here

Basically in some situations InDesign is generating a subset font with a zero length glyf table.

Does this 'exists but zero length' table fulfil the criteria from the PDF specification?

The following TrueType tables are always required: “head,” “hhea,” “loca,” “maxp,” “cvt_,” “prep,” “glyf,” “hmtx,” and “fpgm.”

A number of programs are not happy with such files, but Adobe products seem to handle them. However Acrobat in particular is fairly forgiving as we all know.

Microsoft's font validator says the subset is not valid. Programs like Ghostscript attempt to fix it by adding an empty table.

Form XObjects without Resources - do we ignore ancestor forms?

forums_noreply@adobe.com — Fri, 24 Oct 2014 04:00:39 GMT

Hi, I'm just wondering what happens in the below situation.

We have a Page which includes a form XObject #1, which itself contains another form XObject #2.
Form #2 uses a font but has no Resources dictionary. The font is defined against the Resources dictionary of form #1 instead.

Based on the PDF spec (which I've copied below) a client application should refer to the original Page object to see if the font is defined there but should not check form #1. We should therefore get a missing font error as the PDF is invalid. Is this correct?

For reference the PDF spec v1.4 says the below.

"A form XObject or a Type 3 font’s glyph description may omit the Resources entry, in which case resources will be looked up in the Resources entry of the page on which the form or font is used. This practice is not recommended."

Can't construct a valid cross reference stream.

forums_noreply@adobe.com — Sat, 27 Sep 2014 12:38:15 GMT

I'm building a PDF generation library from scratch.

Currently I'm having trouble generating a valid crossreference stream, but I'm totally lost as to why it is invalid.

%PDF-1.7
%µ
0 0 obj
<<
/Pages 1 0 R
/Type /Catalog
>>
endobj
1 0 obj
<<
/Type /Pages
/Kids [2 0 R]
/Count 1
>>
endobj
2 0 obj
<<
/Parent 1 0 R
/Type /Page
/MediaBox [0 0 612 792]
/Contents 3 0 R
>>
endobj
3 0 obj
<<
/Length 0
>>
stream
endstream
endobj
4 0 obj
<<
/Type /XRef
/W [1 2 0]
/Size 6
/Length 16
>>
stream
...
endstream
endobj
startxref
254
%%EOF

The full pdf file can be found here: https://www.dropbox.com/s/mvn0xptf0lasb28/test.pdf?dl=0

According to the spec a PDF file can consist of only objects with exemption of the first line (the 2nd is a comment) and the part from startxref.

Any tips would be greatly appreciated.

For simplicitly I've added the stream (extract via a hex editor) below:

0A 01 00 0D 01 00 3E 01 00 77 01 00 CE 01 00 FE 0A

Note that the stream starts and ends with a newline character. There are 17 bytes and the last line ending is not part of the stream length.

The remaining bytes 16 bytes have 15 bytes of data, (the first line ending is ignored (right?)):

01 00 0D

01 00 3E

01 00 77

01 00 CE

01 00 FE

As far as I can tell this PDF file's cross reference stream is valid. Any help would be greatly appreciated!

Adobe Reader crashes on duplicate pages

forums_noreply@adobe.com — Fri, 19 Sep 2014 11:49:02 GMT

Adobe Reader will either give Error 14, or just crash out and quit if it comes across a PDF file with duplicate pages, for example:

/Kids [9 0 R 9 0 R]

By my reading of the standard, there is no explicit prohibition of this. Other PDF readers work ok. Is this an Adobe Reader bug, or have I misunderstood the standard?

(Motivation: I'm writing a PDF squeezer which coalesces groups of identical objects into one. This reduces the size of the ISO3200 PDF specification itself by about 20% -- lots of PDF producers seem to create duplicate objects. But if Adobe Reader crashes in this case, where else might it or other readers crash when there is unexpected aliasing of objects?)

If I add PDF files to my website , can the goodlebot read it?

forums_noreply@adobe.com — Thu, 28 Aug 2014 19:27:20 GMT

My website is [link removed] It is about education. Id like to add files about education to be downloaded by teachers bu I do not want them to be read by the googlebot. So If I add PDF files will the bot be able to read them?

CIDset purpose in PDF files

forums_noreply@adobe.com — Thu, 28 Aug 2014 08:39:41 GMT

Hello,

embedded CID fontCould someone explain me a purpose of CIDset in PDF / PDF/A-1b files? What are the benefits/drawback if the information is not included. I am getting error from preflight tool shows "List of CIDs missing in CIDSet od embedded CIDFont". I´ve asked at different forum and I was forwarded here.

Here is link to the topic: https://forums.adobe.com/message/6680776#6680776

Thank you

How to display cyrillic characters in a PDF

forums_noreply@adobe.com — Thu, 10 Jul 2014 20:52:01 GMT

I am fairly green in terms of representing text in PDF documents and need some assistance. My main question is how do I represent Cyrillic characters in PDF files.

I know the basics of how to represent text in PDF files and the PostScript commands to use. I know that bytes written to the file in the range of 0 to 255 will print correctly when using the correct encoding (we are using the WinAnsiEncoding). What I cannot seem to figure out is how to represent extended character sets and different glyphs (such as those used in the Cyrillic alphabet) in a PDF file. Do I need to use CID fonts and CMaps?

Here is an example of the text I understand how to print:

stream

0.00000000 0.00000000 0.00000000 RG

0.00000000 0.00000000 0.00000000 rg

/Helvetica 14 Tf

7.2 768.96 Td

(Hello World!) Tj

endstream

I'm really not clear on how to represent any of the Chinese or Japanese fonts either, so really any help here is appreciated. Any examples are appreciated as well.

Thanks!

Best Adobe product for editing PDF, replacing English text with Thai without altering/recompressing images, graphics etc.?

forums_noreply@adobe.com — Tue, 08 Jul 2014 17:41:11 GMT

I have an English language PDF, a medical device brochure, the content of which has already been translated into Thai (in Word). I want to replace the original English in the PDF with the Thai translation easily without altering any other aspect of the brochure, like graphics, images, margins etc. (No doubt I'll have to tweak line height, font sizes and paragraph lengths a little.) I'm unsure of what would be the best Adobe product for this purpose, e.g. Illustrator, InDesign or Acrobat (or something else), that would allow me simply to open the PDF, replace the English with Thai in an attractive Thai font (to be embedded), make minor layout tweaks, then save without any compression so the quality and colours of the original photos, artwork, and graphical elements are preserved. I've heard Office 2013 allows direct editing of a PDF but I'm not sure if it converts, alters or compresses PDF graphics in some way when first opening the file. Could anyone with relevant experience please advise? Thanks in advance.

Problem in displaying image contained in a pdf file

forums_noreply@adobe.com — Sat, 05 Jul 2014 11:43:41 GMT

I am reading a PDF file that contains an image, color space used in image is CMYK, when I read the image and output it into my own viewer (not pdf reader) I have to subtract each component of each pixel from 255 then I get normal display otherwise I get negative image of the input image. Please tell me why I have to subtract the whole image data from 255?

Best Regards,

Ali

Is there a way to tell what settings were used to export a PDF?

forums_noreply@adobe.com — Wed, 18 Jun 2014 18:42:59 GMT

Is there any way to tell what export settings were used to create a PDF? I'm trying to recreate settings used in a previous PDF.

XFA Form signature

forums_noreply@adobe.com — Wed, 18 Jun 2014 15:24:42 GMT

Hi,

My company developed a tool to sign PDF and it's working well. Today, we were submitted a XFA Form PDF, and we cannot see the signature field nor is the signature bar available.

We'd like to know why is Adobe Reader ignoring the signature?

Is it possible to sign a XFA Form with regular PAdES (and not PAdES part five)? If so, will Adobe Reader validate such signature?

How I can translate a english pdf to spanish (stored in the Acrobat site)?

forums_noreply@adobe.com — Fri, 06 Jun 2014 01:10:12 GMT

Hello every body, Im start today in this site, im upload an a English PDF and i want to know if exist a tool to translate this document

How is it that a searchable PDF text returns found words misspelled when the text is converted to an rtf file?

forums_noreply@adobe.com — Fri, 30 May 2014 19:26:06 GMT

How is it that a searchable PDF text returns found words misspelled when the text is converted to an rtf file?

I can't count the hours spent correcting pdf files that appear fine, but are simply unreadable when turned into editable or searchable text. It would seem to me that once that problem is understood, a solution may be found for at least 1/2 of the misspelled words in post OCR corrections. This is a real hindrance when it come to research ... no one has unlimited time to post OCR correct files to ensure searchable texts are not overlooking important but misspelled words.

WRBulmer

For accessibility, are there any MS-Word Styles that a PDF file cannot use or recognise?

forums_noreply@adobe.com — Thu, 29 May 2014 13:47:38 GMT

I have been told that one cannot use the MS-Word Styles "Title" and "Subtitle" in a PDF file, from an accessibility perspective but I cannot find anything to support this claim. Can anyone tell me if this is true and if so, why these styles are not supported/recognised?

Thank you,

LPS

How to recover incomplete cmap?

forums_noreply@adobe.com — Mon, 12 May 2014 16:50:56 GMT

I printed a Microsoft Word file as a PDF file by Distiller with an embed SakkalMajalla truetype font. I want to extract unicode texts from the PDF file. I found ToUnicode misses part of mapping. For example, CID 06B4 doen't have any mapping. I guess 06b4 should be mapped to U+0644. There are some substitutions in SakkalMajalla. So uni0644.medi (U+FEE0) is replaced by liga.0758.medi.alt1 (U+10354). Why can't Distiller deal with the situation? How can I recover missed mapping from PDF objects except ToUnicode? Thanks

P.S. I also asked the question couple days ago. Please see Re: Is it a bug of Distiller? I haven't got answers. I don't have privilege to move or delete that discussion. Sorry for asking a question in two communities.

/GS1 gs

/TT1 1 Tf

24 0 0 24 513.84 764.1203 Tm

0 g

0 Tc

0 Tw

<0284>Tj

.495 .5925 TD

<0551>Tj

-.1675 -.5925 TD

<06b4>Tj

.4 .4225 TD

<0551>Tj

-.12 -.4225 TD

<024f>Tj

/TT2 1 Tf

12 0 0 12 506.58 764.1203 Tm

( )Tj

/CIDInit /ProcSet findresource begin 12 dict begin begincmap /CIDSystemInfo <<

/Registry (JJEELB+TT1+0) /Ordering (T42UV) /Supplement 0 >> def

/CMapName /JJEELB+TT1+0 def

/CMapType 2 def

1 begincodespacerange <024f> <0551> endcodespacerange

3 beginbfchar

<024f> <0639>

<0284> <0649>

<0551> <064E>

endbfchar

endcmap CMapName currentdict /CMap defineresource pop end end

change font in DA of FreeText Annotation

forums_noreply@adobe.com — Fri, 04 Apr 2014 17:36:31 GMT

I am trying to change the default appearance (the DA entry) of a FreeText annotation. To begin with, I can't find anywhere in Acrobat to change the font of a FreeText annotation. My understanding is that I need to create a font alias in DS entry of the AcroForm, then reference it using Tf operator in the DA entry.

Below is the smallest PDF code I created:

%PDF-1.6

%âãÏÓ

1 0 obj

<</Type/Catalog/Pages 2 0 R/AcroForm 3 0 R>>

endobj

2 0 obj

<</Type/Pages/Kids[4 0 R]/Count 1>>

endobj

3 0 obj

<</Fields[]/DR<</Font<</FNT1 5 0 R>>>>>>

endobj

4 0 obj

<</Type/Page/Parent 2 0 R/Resources<<>>/MediaBox[0 0 612 792]/Annots[6 0 R]>>

endobj

5 0 obj

<</Type/Font/Subtype/Type1/BaseFont/Times-Bold>>

endobj

6 0 obj

<</Type/Annot/Rect[10 400 160 570]/CreationDate(D:20140404131900-05'00')/Subtype/FreeText/Contents(OK, Let's just start a content.)/DA(/FNT1 9 Tf\n1 0 0 rg\n0 1 0 RG\n)>>

endobj

xref

0 7

0000000000 65535 f

0000000015 00000 n

0000000075 00000 n

0000000126 00000 n

0000000182 00000 n

0000000275 00000 n

0000000339 00000 n

trailer << /Size 7 /Root 1 0 R/ID[<da5bbc2c7a8acf9c73eb1fbda9cf31c6><da5bbc2c7a8acf9c73eb1fbda9cf31c6>]>>

startxref

525

%%EOF

Acrobat failed to display the FreeText annotation in new font and background. The document shows that the FreeText annotation uses Helvetica font, not Time-Bold.

What is wrong with my code?

Example font subset with non-unicode output

forums_noreply@adobe.com — Thu, 20 Mar 2014 10:47:05 GMT

Hi,

I am searching for an example to use a TTF Font as font subset in PDF but without UTF16 encoding.

Is this even possible?

Something similar to

7 0 obj
	<</Type /Font /Subtype /Type0 /BaseFont /AAAAAD+Arial/Encoding /Identity-H /DescendantFonts [9 0 R] /ToUnicode 8 0 R >>

9 0 obj
	<</Type /Font /Subtype /CIDFontType2 /BaseFont /AAAAAD+Arial /CIDSystemInfo << /Registry (Adobe) /Ordering (Identity) /Supplement 0 >> /FontDescriptor 11 0 R /W [...

But how does the rest should look like?

Thank you in advanced

Form field info not showing up, unless field is clicked? (again)

forums_noreply@adobe.com — Mon, 03 Mar 2014 22:39:22 GMT

We're using a pdf library called Sync Fusion to automate some fillable fields in a pdf but after the text has been placed it is not visible due to the form field high-lighting.

So far we have tried the 3 things below but nothing has solved this issue.

changing the fore/background color of the fillable fields to selected colors
disabling multiline fields
applying "mac fix" scripts

Anyone have any other ideas that might fix this? We're going to try a different pdf library next.

thanks,

Bob

Indexed png transparency using /Mask

forums_noreply@adobe.com — Fri, 21 Feb 2014 22:12:11 GMT

Hi,

is it possible to use an indexed png's palette and accompanying transparency data to display a masked image? I've seen enough evidence in other opensource pdf libraries to suggest that it's possible, but am having trouble getting it working myself.

The indexed PNG's i've tested all contain an array of palette data and an associated array of transparency values.

I'm able to successfully display the png in a pdf, when only using it's palette and excluding the transprancy. The transparent parts of the image are displayed as black, as expected . The outuput is,

17 0 obj

<</Type /XObject

/Subtype /Image

/Width 16

/Height 16

/ColorSpace [/Indexed /DeviceRGB 15 18 0 R]

/BitsPerComponent 4

/Filter /FlateDecode

/DecodeParms <</Predictor 15 /Colors 1 /BitsPerComponent 4 /Columns 16>>

/Length 155>>

stream

--------------- BINARY IMAGE DATA ---------------

endstream

endobj

18 0 obj

<< /Length 48>>

stream

--------------- PALETTE ARRAY VALUES AS BINARY ---------------

endstream

endobj

But as soon as i try an add the transparency array, nothing gets displayed and i get an error when opening the pdf that says 'An error exists on this page'. The transparency values for the indexed image are as follows,

[255, 255, 192, 192, 160, 160, 128, 128, 96, 96, 64, 64, 32, 32, 0, 0]

I've followed the spec, 8.9.6.4 Colour Key Masking, although i'm not sure if there should be a difference between 'min' and 'max' or whether it's just the same value duplicated? From the logic i've seen in other pdf generation libraries, it appears to be the latter.

This is the non working output i get, when attempting to use the above array of transparency values as a mask,

17 0 obj

<</Type /XObject

/Subtype /Image

/Width 16

/Height 16

/ColorSpace [/Indexed /DeviceRGB 15 18 0 R]

/BitsPerComponent 4

/Filter /FlateDecode

/DecodeParms <</Predictor 15 /Colors 1 /BitsPerComponent 4 /Columns 16>>

/Mask [255 255 255 255 192 192 192 192 160 160 160 160 128 128 128 128 96 96 96 96 64 64 64 64 32 32 32 32 0 0 0 0 ]

/Length 155>>

stream

--------------- BINARY IMAGE DATA ---------------

endstream

endobj

18 0 obj

<< /Length 48>>

stream

--------------- PALETTE ARRAY VALUES AS BINARY ---------------

endstream

endobj

PDF File with Run Length Encoding?

forums_noreply@adobe.com — Thu, 13 Feb 2014 17:29:13 GMT

Would anyone have a PDF file containing text streams compressed in Run-Length Encoding? I need one to test a decompressor. I know they are probably rare and not used anymore which is why one is so difficult to find.

If you do have one could you attach it in a reply or refer me to it.

Thanks

Some characters extracted from pdf hasn't corresponding unicode in its font

forums_noreply@adobe.com — Mon, 10 Feb 2014 08:46:02 GMT

I extracted font form pdf(arabic text) and after I opened this font I found that there are some characters hasn't corresponding unicode although the other has!

I ask about why these characters hasn't corresponding Unicode such as remaining characters? and how PDF read these characters and display it in its file although it has't unicode? because I can't get these characters outside PDF!.

This image show part of font I extracted has characters with no unicode(question mark instead).

page height is zero

forums_noreply@adobe.com — Wed, 29 Jan 2014 18:05:46 GMT

We're building a pre-flight tool to check page orientation and auto-rotate to consistantly build right reading books whether or not the page is landscape or portait but we're coming up with pdfs with MediaBox[0 -612 792 0] and getting page height = 0 and then the tool fails. We don't seem to be able to fix this programmatically. /Rotate = 0. Most of these PDFs are 1.6 but It was noticed that in PDF version 1.6 there is no mediabox and instead just has /BBox. Is there some significance to this? There doesn't seem to be a /Rotate either. I believe these pdfs are created programattically via some API rather than through InDesign or Distiller. We're trying to find a consistent way of determinig page size to do our calculations and/or be able to repair a pdf prior manipulation.

Any ideas how we should go about this? We are using a 3rd party API to do the work but this seems an issue with the actual PDF vs. the API, at least at this point.

thanks,

Bob

in browser- URL of PDF where it imports FDF data

forums_noreply@adobe.com — Fri, 24 Jan 2014 17:08:22 GMT

I want to bring up my browser - put the URL of a PDF on a server that has fillable fields - and have the PDF automatically bring in the contents of an FDF file to populate the fields defined in the FDF file.

There is ADOBE documentation of doing something like this:
http://www.mydomain.com/abc.pdf#fdf=datafile.fdf

That's all I want to do. Simple.

In detail - in a PHP program I want to create the FDF file just using fopen and fwrites - no additional packages - then my JavaScript calls an already created PDF file on the web with the PDF when brought up on the server side automatically imports the FDF my program created a few seconds ago.

I do know about fdf_create in PHP but unfortunately the server I'm on is cpanel based and the hosting company cannot load a library for fdf_create related calls.

I cannot seem to get this working. I've called Adobe tech support. A few months ago I reached someone who actually said "You've reached the right person. Yes that is doable." and they confirmed what I wanted to do. But since then the Adobe people I call don't seem to understand what an FDF file is even though that is what Adobe uses to communicate and has it in their documentation as http://......abc.pdf#fdf=xxx.fdf

Now I've even eliminated the step/chance that I've not created my FDF file properly. I've gone into Acrobat Pro and done an extract to an .FDF file. Then I've tried http://www.myweb.com/abc.pdf#fdf=theAcrobatExtractedFile.fdf and it still ignores the contents of the FDF file.

I've also tried http://www.myweb.com/abc.pdf#fdf=http://www.myweb.com/extractedfile.fdf fully qualifying the location of the FDF file.

Help! This is important. Thank you.

Jay

PDF Stream Extent?

forums_noreply@adobe.com — Fri, 17 Jan 2014 03:52:02 GMT

Hello everyone.

I'm trying to interpret exacty what is and isn't included in a PDF stream and to date am still confused. I'll paste a section of the ISO3200 - 1 PDF reference below.

I'm not sure, but these statements appear to contradict each other.

So I have a stream which specifies a lenghth of 2215 bytes in its compressed form.

There is a carriage return and a line feed at the start and end of the stream data falling between the 'stream' and 'endstream' keywords.

So my data looks like this : stream CR LF Data Data Data CR LF endstream Keep in mind that CR = Carriage Return and LF = Line feed

Before I remove the CR and LF from each end of the data the total size of the stream is 2217 bytes (between the 'stream' and 'endstream' keywords. From the first paragraph below it appears that I am reading the data between the Carriage return and line feed characters at each end which brings the compressed size down to 2213 bytes (not 2215 as the stream 'Lenght' specifies.

If I follow the second paragraph from Table 5 in relation to Stream Lenghth, it appears that only the carriage return and line feed at the end of the stream are removed. So the stream to be decompressed would look like this: CR LF Data Data Data . This in fact adheres to the Stream Lenght specification for that stream which is 2215 bytes?

When decompressing a stream, what should and shouldn't be included? Cut the CR and LF from the start or the end ,,, or both? Note the red bolded section below: "lie between the end-of-line marker (I assume this means not inclusive). Like saying, stand between those two people (this doesn't mean stand on these two people and centre yourself). Yet... the green bolded area in the second section doesn't mention the initial white space?

Perhaps this is what it means. The first whitespace character after the 'stream' keyword and the whitespace character preceding the 'endstream' keyword are ignored so the stream looks like this:

Original Stream Data before removing whitespace: CR LF Data Data Data CR LF

Actual Stream data to be decompressed (whitespace removed): LF Data Data Data CR

That last option produces a stream of 2215 bytes as well.

Thanks

Under 'Stream Objects - General'

The keyword stream that follows the stream dictionary shall be followed by an end-of-line marker

consisting of either a CARRIAGE RETURN and a LINE FEED or just a LINE FEED, and not by a CARRIAGE RETURN alone. The sequence of bytes that make up a stream lie between the end-of-line marker following the stream keyword and the endstream keyword; the stream dictionary specifies the exact number of bytes. There should be an end-of-line marker after the data and before endstream; this marker shall not be included in the stream length.

AND

From table 5 in relation to the stream Length.

(Required) The number of bytes from the beginning of the line

following the keyword stream to the last byte just before the

keyword endstream. (There may be an additional EOL

marker, preceding endstream, that is not included in the count

and is not logically part of the stream data.) See 7.3.8.2,

"Stream Extent", for further discussion.

Is it possible to control the height of the Portfolio panel via the PDF Portfolio itself?

forums_noreply@adobe.com — Mon, 13 Jan 2014 23:28:06 GMT

Hi All,

Is it possible to embed into a PDF Portfolio kind of a directive to Adobe Acrobat Reader what should be the height of the Portfolio panel (red line on the image below)?

The idea, basically, is to adjust the height of the panel to the number of files in the portfolio.

Alternatively, is there a way to embed a directive to open by default the Layout pane instead of the Files pane?

Thank you all in advance for assistance!

Change the image under Form XObject to the first layer

forums_noreply@adobe.com — Sun, 29 Dec 2013 13:33:44 GMT

Hi here

The right column is the file before structure optimization, all the 5139 images is encaptured in one form(fm0).

The left column shows the structure in which all the images are changed to fist laye under XObject.

The change from right to left would make difference for specific environment like:

1)Acrobat Pro 9 would open the file after change.

2)Some workflow like ONYX Thrive could handle.

The form content actually is not repeatable,I would think it's a wrong application of Form XObject ,leading to nested XObject.

I am not a programmer so I would like to see whether it's possible in high level application to optimize the structure in Acrobat Pro?

If I have to use some low level tools to change, please help to comment which is would easy one for me.

Many thanks

Kevin

Convert text file into pdf with hebrew charcters

forums_noreply@adobe.com — Mon, 09 Dec 2013 10:53:23 GMT

Hi,

I am want to convert Text files into Pdf.

In my origin file, I can get Hebrew Charcters as well.

I used this line for the basefont: "\r\n<</Type/Font/Subtype/Type1/BaseFontt/Courier/Encoding/WinAnsiEncoding>>\r\nendobj\r\ n"

I understood my Encoding is not suitable for the Hebrew charcters.

To what do I need to change this line?

Thanks

Hezi

Reading a PDF stream for LZW decompression?

forums_noreply@adobe.com — Sun, 08 Dec 2013 11:45:31 GMT

Hello.. I'm really struggling here.

I am currently using the Rosetta Code implementation for LZW decompression (C++). This implementation requires numerical imput. That is.. the input in it's compressed state is in numerical form.. a series of numbers. My problem is this:

I want to read the compressed LZW stream (compressed only in LZW and notencoded in ASCII 85) into a buffer and that is then passed to the decompression algorithm for decompression. I open the pdf in binary mode, read each character and convert it to an int and load each integer into the buffer . Once the buffer (which is an int vector) is loaded, I pass this to the algorithm for decompression.

Unfortunately the data will not decompress. I seem to get the same output as I put into it in a character form. I have included white space (noskipws) and also tried the opposite. I have also tried (using bitwise shift operation) to create 12 bit chunks and then loading those into an int vector. This isn't working either. I'm thinking it has something to do with how I am reading the data in the first place. What do all these little glyphs represent (in the compressed stream)? How do I go about reading compressed data into a buffer if the algorithm I am using requires numberical input common to LZW compression?

Should I include white space? How should I read the compressed data?

Any clues would be greatly appreciated.

Thanks very much.

Appearance state (AS) vs. value (V) of Button Form Fields

forums_noreply@adobe.com — Thu, 31 Oct 2013 15:58:43 GMT

It all started with a PDF where the state of the checkboxes was visually different from our viewer to the acrobat reader.

After some investigation the problem was a different state of the /V and the /AS attributes:

...

/FT/Btn

/Subtype/Widget

/T(Checkbox1)

/V (0)

/AP <</N <</Off 20 0 R /0 21 0 R>>>>

/AS/Off

...

So the value states that the checkbox is checked and the appearance state says it is not checked.

I looked up the PDF spec it says:

V=value

(page 440) The V entry in the field dictionary (see Table 220) holds a name object representing the check box’s appearance state, which shall be used to select the appropriate appearance from the appearance dictionary.

AS=appearance state

(page 383) (Required if the appearance dictionary AP contains one or more subdictionaries; PDF 1.2) The annotation’s appearance state, which selects the applicable appearance stream from an appearance subdictionary (see Section 12.5.5, “Appearance Streams”).

Our viewer analyzed the content (/V) and the adobe reader obviously considered the appearance state (/AS).

If both are set and are different which one 'wins'?

From my perspective it is in violation of the spec that both are different. However

1.) since /V is optional and /AS is required one can argue that /AS has a slight "advantage" so to speak

2.) Also PDF/A-1 states that: "Every form field shall have an appearance dictionary associated with the field's data. A conforming reader shall render the field according to the appearance dictionary without regard to the form data." Which would also indicate in case of doubt look at the AS.

It would be nice if anyone can share his thoughts about it...

PDF-Printer Settings

forums_noreply@adobe.com — Wed, 23 Oct 2013 07:32:48 GMT

Hello everyone

Where does Adobe store these settings exactly? They must be registered in some kind of an *.ini-File, in the system's registry or at another location.
We need this information to automate our setup on every workstation. Domain solutions as an alternative are unfortunately not possible yet.

Thank you.

How to download Adobe-UCS-0 cmap?

forums_noreply@adobe.com — Fri, 11 Oct 2013 13:28:56 GMT

Guys,

I have pdf, there the CID font is embedded. But I can't able to extract the glyph. The font is encoded using Identity-H and using the Adobe-UCS-0 character map to decode. The details are given below.

/Type/Font

/Subtype/CIDFontType2

/FontDescriptor 16 0 R

/CIDSystemInfo

/Registry(Adobe)

/Ordering(UCS)

/Supplement 0

Please help me to download this cmap.

Thanks,

Xavier

Question on OPM as 0

forums_noreply@adobe.com — Thu, 26 Sep 2013 04:13:38 GMT

Hi here

I went through PDF 1.7 reference and Pitstop Pro to understand the difference between OPM 0 and OPM 1.

I have clearly understanding on none-zero overprint mode now.

However,I got questions on OPM 0.

1)If the default OPM from Illustrator is OPM 1,and there is also "knockout" definition when the overprint checkbox is not selected ,how could I generate OPM 0 definition from Illustrator or other creative application? So far I could just change the definition in PitStop Pro.

2)What's the result difference between the definition of OPM 0 and knockout?

Looks like they are the same, when viewing the different objects as OPM 0 and knockout in Acrobat Pro and also in creative application,with overprint viewing is selected.

Many thanks

Kevin

How to find decoder name from decoded stream?

forums_noreply@adobe.com — Mon, 23 Sep 2013 13:08:21 GMT

Hey,

177 0 obj^M<</Length 110 /Filter /FlateDecode >>^Mstream^M

x<9c>3´Ô30P0^@^Q<86> B^WÂ4^C<91>Fæ 2ÅP¡^P"^@Q^G#Á²^P]0¡ä\^E'O^Eýp r^E}^O

I have decoded the above stream by using the FlateDecode and I can get the below result.

19.00 0.00 1.00 -0.00 16.00 27.00 d1 q 16.000 0.000 0.000 27.000 1.000 0.000 cm BI /W 16 /H 27 /BPC 1 /IM true /D [1 0]

ID ￠￠￠ ￰ p x<?￸ ￰ ￀EI Q

Still the Image Data [ID] is encoded. I have to decode this Image data by using the corresponding decoder to get the exact value.

But I'm confused, how to find the decoder name? Which decoder needs to be used for decode this ID [Image Data]?

Can someone help me to find the decoder for Image Data [ID].

Thanks,

Xavier

This font not work with me after extracting it from pdf!

forums_noreply@adobe.com — Sat, 21 Sep 2013 07:46:47 GMT

After extracting text from arabic pdf, there are font named "BCMCBO+Sultannormal", I extracted it but not worked with me although there are another fonts in the same file worked with me, why?,Please anyone answer me!

Problem with invalid /Pages on root obj...

forums_noreply@adobe.com — Thu, 19 Sep 2013 08:48:46 GMT

Document : http://6m889f.1fichier.com/ - 28Kb - No script - No crypt (can be open with wordpad).

The document is an extract of a page of a big document that seems to be done with acrobat, so i suppose the doc is valid but my undestanding of PDF32000_2008 is wrong...

The page contain only an image type : CCITTFaxDecode.

The mecanisme i use to decode the doc :

1 - Extract start xref from the doc (read from end)

startxref

116

%%EOF

2 - Move to offset 116

20 0 obj

/DecodeParms

<</Columns 4/Predictor 12>>

/Filter/FlateDecode

/ID[<9D591874D8530F47922A2947626F4B0A><6D9DBF0DD389B440AC6E086693CE9B16>]

/Index[11 19]

/Info 10 0 R <- This entry don't exist.

/Length 59

/Prev 27626

/Root 12 0 R <- This entry exist.

/Size 30

/Type/XRef/W[1 2 1]

stream...endstream...endobj

a - I have an other xref at offset 27626

b - /Info ref to an obj that is not visible on the PDF document ?

c - /Root ref to a valid obj.

3 - I decode xref

Message - Process XRef - Offset 116

-----------------------------------------------------------------------< Begin of first cross-reference stream

Message - Process type 1 : Dump Data ( 4 ): 01 00 10 00

Message - Add new XRef 11 - Offset 16 <- Match with file

Message - Process type 1 : Dump Data ( 4 ): 01 02 6C 00

Message - Add new XRef 12 - Offset 620 <- Match with file

Message - Process type 1 : Dump Data ( 4 ): 01 02 B9 00

Message - Add new XRef 13 - Offset 697 <- Match with file

Message - Process type 1 : Dump Data ( 4 ): 01 04 45 00

Message - Add new XRef 14 - Offset 1093 <- Match with file

Message - Process type 1 : Dump Data ( 4 ): 01 06 3B 00

Message - Add new XRef 15 - Offset 1595 <- Match with file

Message - Process type 1 : Dump Data ( 4 ): 01 07 EF 00

Message - Add new XRef 16 - Offset 2031 <- Match with file

Message - Process type 1 : Dump Data ( 4 ): 01 08 B2 00

Message - Add new XRef 17 - Offset 2226 <- Match with file

Message - Process type 1 : Dump Data ( 4 ): 01 09 3F 00

Message - Add new XRef 18 - Offset 2367 <- Match with file

Message - Process type 1 : Dump Data ( 4 ): 01 0A 78 00

Message - Add new XRef 19 - Offset 2680 <- Match with file

Message - Process type 1 : Dump Data ( 4 ): 01 00 74 00

Message - Add new XRef 20 - Offset 116 <- Match with file (this entry)

Message - Drop type 2 : Dump Data ( 4 ): 02 00 0E 00 <- ?

Message - Drop type 2 : Dump Data ( 4 ): 02 00 0E 01 <- ?

Message - Drop type 2 : Dump Data ( 4 ): 02 00 0E 02 <- ?

Message - Drop type 2 : Dump Data ( 4 ): 02 00 0E 03 <- ?

Message - Drop type 2 : Dump Data ( 4 ): 02 00 0E 04 <- ?

Message - Drop type 2 : Dump Data ( 4 ): 02 00 0E 05 <- ?

Message - Drop type 2 : Dump Data ( 4 ): 02 00 0E 06 <- ?

Message - Drop type 2 : Dump Data ( 4 ): 02 00 0E 07 <- ?

Message - Process type 1 : Dump Data ( 4 ): 01 01 CE 00

Message - Add new XRef 21 - Offset 462

-----------------------------------------------------------------------< End of first cross-reference stream

a - All entries start with 01 : Is valid and is a the offset.

b - I have some starting with 02

I don't really undestand the document about this entry

The solution seems to be on Table 18 – Entries in a cross-reference stream

I suppose first byte (w:121) is the type Type 2 (first column of the table )

For 000E and 07 i don't undestand....

I will see that point later except if it the solution to my problem ^_^...

4- I decode the second xref

a - Move to offset 27626 ( /Prev 27626 )

5 0 obj	<<
		/DecodeParms<</Columns 4/Predictor 12>>
		/Filter/FlateDecode/ID[<9D591874D8530F47922A2947626F4B0A><6D9DBF0DD389B440AC6E086693CE9B16 >]
		/Info 10 0 R	<- Like in previousely, this entry don't exist.
		/Length 49
		/Root 12 0 R	<- Like in previousely, this entry exist.
		/Size 11
		/Type/XRef/W[1 2 1]
	>>

stream...endstream...endobj

b - decoding

-----------------------------------------------------------------------< begin of second cross-reference stream

Message - Drop type 0 : Dump Data ( 4 ): 00 00 00 00 <- ?

Message - Process type 1 : Dump Data ( 4 ): 01 5B 2A 00

Message - Add new XRef 1 - Offset 23338 <- Match with file (this entry)

Message - Process type 1 : Dump Data ( 4 ): 01 5E 01 00

Message - Add new XRef 2 - Offset 24065 <- Match with file (this entry)

Message - Process type 1 : Dump Data ( 4 ): 01 6A 83 00

Message - Add new XRef 3 - Offset 27267 <- Match with file (this entry)

Message - Process type 1 : Dump Data ( 4 ): 01 6B 10 00

Message - Add new XRef 4 - Offset 27408 <- Match with file (this entry)

Message - Process type 1 : Dump Data ( 4 ): 01 6B EA 00

Message - Add new XRef 5 - Offset 27626 <- Match with file (this entry)

Message - Drop type 2 : Dump Data ( 4 ): 02 00 01 00 <- ?

Message - Drop type 2 : Dump Data ( 4 ): 02 00 01 01 <- ?

Message - Drop type 2 : Dump Data ( 4 ): 02 00 01 02 <- ?

Message - Drop type 2 : Dump Data ( 4 ): 02 00 03 00 <- ?

Message - Drop type 2 : Dump Data ( 4 ): 02 00 04 00 <- ?

-----------------------------------------------------------------------< End of second cross-reference stream

a - All entries start with 01 : Is valid and is a the offset.

b - I have some starting with 02

same issue than for previous xref.

So now i have a vector of all obj on the document there no orphan, it's why i don't investigate for strange entry 02.

5 - Read root entry

12 0 obj	<<
		/AcroForm 21 0 R
		/Metadata 2 0 R
		/Pages 9 0 R	<- This entry to not exist
		/Type/Catalog
	>>

endobj

As previous with /Info 10 0 R that don't exist on the document, /Pages 9 0 R don't exist on document ?!

The document can be read by acrobat-reader & foxit, so i do something wrong but i don't see what...

The only obj with "page" is :

13 0 obj

<< /BleedBox[29.9391 30.0045 681.297 871.951]

/Contents 15 0 R

/CropBox[29.9391 30.0045 681.297 871.951]

/MediaBox[0 0 711.968 901.89]

/Parent 9 0 R

/Resources<</ColorSpace<</CS0 22 0 R/CS1 23 0 R>>/ExtGState<</GS0 24 0 R/GS1 25 0 R>>

/Font<</T1_0 28 0 R>>

/ProcSet[/PDF/Text/ImageC]

/XObject<</Im0 19 0 R>>

/Rotate 0

/StructParents 57

/TrimBox[29.9391 30.0045 681.297 871.951]

/Type/Page

endobj

And "/Parent 9 0 R" this the same issue than with root : It's not on the doc ?

If someone can help me ?

Thanks

WCoder

Message was edited by: WCoder - Firefox crash + correction+add pdf...

Problem saving Reader extended PDF with Javascript functions built in

forums_noreply@adobe.com — Mon, 02 Sep 2013 20:00:41 GMT

Afternoon

I have created an interactive PDF in Livecycle with built in Javascript functionality. I need users to be able to complete and save the PDF so have saved it as a Reader extended PDF. The problem I'm having is that when a user completes the form,saves it, and then opens it again the Javascript functionality is not showing despite showing the original selection that the user has made. The Javascript is simply a dropdown menu that will show a different table based on the selection so isn't anything major.

I've trawled forums and this is driving me mad so I'd appreciate some help.

I am using Adobe Pro XI.

Thanks in advance

Ben

Extract embedded fonts from pdf

forums_noreply@adobe.com — Sun, 25 Aug 2013 15:06:15 GMT

Please i want to ask about the ability to extract embedded fonts from pdf is easy or not? because i tried to extract fonts form specific pdfs but there are fonts that not valid files, why these files not valid? are there specific technique to extract fonts from pdf?

Paragraph detection in pdf

forums_noreply@adobe.com — Thu, 22 Aug 2013 07:52:49 GMT

Please, How can I detect paragrahs when reading pdf file?

How can I check text rotation when extracting text from pdf file?

forums_noreply@adobe.com — Tue, 20 Aug 2013 11:45:36 GMT

If there are rotated text in pdf file how can I detect this rotation in the output stream??

Extract embedded xml from PDF/A-3b (also creation)

forums_noreply@adobe.com — Mon, 19 Aug 2013 11:19:17 GMT

Hello there,

in the context of a research project, we are currently trying to extract embedded xml from a PDF/A-3b document via code.

The project deals with establishing a new invoicing standard (Zugferd: ferd-net.de, only german). Invoices are expressed via xml, which is embedded in PDF/A.

What we are trying to archive is extraction of the xml via java code. For testing purposes, we are currently using an third party skd to extract the invoice-xml, by calling a .EXE file and then picking up the results in java.

I currently have only one valid example file that can be processed via this sdk. To get more data, i used the test version of acrobat pro to alter the embedded xml file. To be more specific, i deleted the embedded file, added a new xml file, and used preflight to make the PDF conform to /A-3b. Although the file seems to have the same properties as the original, it can no more be processed via the extraction sdk. Since messing around with acrobat does not seem to get me anywhere, i am now looking into extracting data from the pdf my self.

Is there any present implementation/library/solution for extracting data in a java context? The few third party tools i found are all based of a .net/windows native environment. I have heard rumors about Adobe giving out tools to extract embedded data from PDF/A?

How is it the other way around? Is it possible to embedd xml into a PDF via Java? Given there allready is PDF file which we can attach to.

I really appreciate reading and thanks for any help or input!

Greetings,

Florian

Generating PDF from a C program. How do I get dimensions of rendered text?

forums_noreply@adobe.com — Tue, 30 Jul 2013 08:31:19 GMT

Hello.

I am generating a PDF file from withing a C program I am developing and I am running into trouble measuring the dimensions of arbitrary text string when rendered on the page. Even if I had widths of individual glyphs in the font I am using, I would still run into trouble considering ligatures. My questions are the following:

When I generate a PDF file, I have to provide the /Widths array dictionary entry for the font I use. How do I get these values? Is it possible to get them out of the font file (OTF/Type-1) easily?
If I do have the widths of individual glyphs and the ascent/descent values for the whole font, I still need ascent/descent for individual glyphs so that I can typeset things perfectly. How about these? Can they be read from the formats mentioned above?

What confuses me is this. A PDF writer (be it Microsoft Word) knows the font it is using to write text, obviously. When it saves the document as PDF, does it really inspect the font to dig out the glyph sizes?

I do not use any libraries whatsoever, I am generating the whole file and its PostScript streams "by hand".

Thanks!

David

Object reference in the xref table is in offset to the actual reference of the objects

forums_noreply@adobe.com — Sat, 20 Jul 2013 13:07:42 GMT

Im trying to parse a PDF file. The goal is to automatically mark sections of the document to make it easier for a reader to spot the important sections of the document.

I read the PDF file by making an AJAX call then storing the responseText in a variable.

I the find the reference to the xref table and try to get to the xref table using that reference.

The thing is that the reference at the startxref section of the doc is showing "startxref 275815%%EOF" but the actual reference to the xref table is different, if I do "...indexOf('xref')" its showing 265798 (a difference of 10017) and all the references in the xref tables are also offset by the same amount.

Any hints on the source of that difference ?

What am I doing wrong ?

Thanks

Erez

javascript, object's properties

forums_noreply@adobe.com — Mon, 01 Jul 2013 09:08:06 GMT

Hi,

I'm working on interactive forms (textfields, checkboxes, etc.) and javascript in PDF.

in javascript, I get an object - e.g. this.getField("textfield1") - and I need to know which properties of the object are available. Is there any way how to find it out during runtime? Is there any reference containing these properties?

Thank you for your help.

Arabic letters inside pdf!

forums_noreply@adobe.com — Tue, 25 Jun 2013 08:02:23 GMT

Hello All,

please I have an enquiry about how pdf store arabic letters inside it because when i extracted arabic letteres from pdf file I saw different unicode for each letter not the original unicode for arabic letters in the range(06##)???

please need any answer about this question!