20 Replies Latest reply on Aug 10, 2018 7:37 AM by gener7

    "Not a PNG file" error

    eaquino1985 Level 1

      Hi,

       

      I recently (yesterday) bought a subscription and downloaded Photoshop cc 2018.

       

      I cannot open a PNG file, this is what it says:

      0.jpg

      I cannot continue editing without the PNG file I am trying to open.

       

      1. I have tried opening this same file on my other laptop which also has Photoshop cc 2018 installed and it opens perfectly.

      2. I have tried uninstalling and then reinstalling but it still doesn't work.

      3. I am using windows

        • 1. Re: "Not a PNG file" error
          mglush Adobe Community Professional

          Hi!

           

          Does it have to be a png? If you can open it on your other computer, try saving it as a .psd file on to a flash drive and then open it on your new computer so you can at least keep working until you get an answer for why.

           

          I know that's not the answer you were looking for, but it's just a practical work around until you find out the answer.

           

          Michelle

          • 2. Re: "Not a PNG file" error
            Dan Rodney Adobe Community Professional

            To me, that type of error seems like one of the following:

            • a corrupted file
            • It's a different type of file, just named .png. Someone could have renamed the file extension without actually converting the file. For example, they took file.jpg and just renamed it file.png
            1 person found this helpful
            • 3. Re: "Not a PNG file" error
              eaquino1985 Level 1

              You have a very valid point, thank you!

              • 4. Re: "Not a PNG file" error
                eaquino1985 Level 1

                I understand what you are trying to say, but as I have said - this opens perfectly on my other laptop. So the possibility of it being a corrupted/different kind of file would be zero.

                 

                Thank you!

                • 5. Re: "Not a PNG file" error
                  gener7 Adobe Community Professional & MVP

                  Why not rebuild it? Open it in the laptop that will take it.

                   

                  Make a "non-destructive change" such as toggling q on your key to enter/exit quick mask. That makes it a changed file.

                   

                  Save it and try opening it in your other PC

                   

                  Gene

                  • 6. Re: "Not a PNG file" error
                    Dan Rodney Adobe Community Professional

                    Sorry, I missed the part where you said it opens fine on your other computer. If you transferred it from one computer to the other it's slightly possible it could have been corrupted, but that is unlikely.

                     

                    Does this happen to all PNGs, or just this one?

                     

                    Have you tried saving the file as a PSD (Photoshop document) on your other computer and see if that opens? You could then try saving it as a PNG on the "problem" computer and see if it works. The idea is that you need to figure out if it's a problem with your file, or your installation of Photoshop.

                    • 7. Re: "Not a PNG file" error
                      mglush Adobe Community Professional

                      One other thought--

                       

                      When you have the "Open" dialog box open -- there is a little drop down menu at the bottom. Change the selection to All files, an see if you can open the png.

                       

                      Michelle

                      • 8. Re: "Not a PNG file" error
                        LisaLouLouLou Level 1

                        I had this same problem, except I am on a Mac. Since Macs will allow files without extensions to be used, I tried deleting the extension and Photoshop then opened it. It says it's a Photoshop .psd file even though it was saved as a PNG. I suggest trying to change the file extension to .psd and see if you can open it. I hope that helps.

                        • 9. Re: "Not a PNG file" error
                          gener7 Adobe Community Professional & MVP

                          For Mac users, simply open the suspect file in Preview.app, then select File > Save and the correct extension will be applied. I use it most when .jpeg is appended to what is really a .png file.

                          3 people found this helpful
                          • 10. Re: "Not a PNG file" error
                            AdChix Level 1

                            This is suddenly happening to me today. I do NOT want a workaround. I want it fixed. Now.

                             

                            It's not just happening on one image. It's all images.

                            • 11. Re: "Not a PNG file" error
                              gener7 Adobe Community Professional & MVP

                              Supply pertinent information for quicker answers

                              The more information you supply about your situation, the better equipped other community members will be to answer. Consider including the following in your question:

                               

                              * Adobe product and version number

                              * Operating system and version number

                              * The full text of any error message(s)

                              * What you were doing when the problem occurred

                              * Screenshots of the problem

                              * Computer hardware, such as CPU; GPU; amount of RAM; etc.

                              • 12. Re: "Not a PNG file" error
                                AdChix Level 1

                                Photoshop CC 2018

                                Mac OS High Sierra

                                Not a PNG file
                                Trying to work in photoshop

                                Screen Shot 2018-08-02 at 12.18.23 PM.png

                                 

                                 

                                  Model Name: iMac Pro

                                  Model Identifier: iMacPro1,1

                                  Processor Name: Intel Xeon W

                                  Processor Speed: 3.2 GHz

                                  Number of Processors: 1

                                  Total Number of Cores: 8

                                  L2 Cache (per Core): 1 MB

                                  L3 Cache: 11 MB

                                  Memory: 32 GB

                                  Boot ROM Version: 15.5064.0

                                 

                                Screen Shot 2018-08-02 at 12.30.16 PM.pngScreen Shot 2018-08-02 at 12.30.32 PM.pngScreen Shot 2018-08-02 at 12.30.45 PM.png

                                • 13. Re: "Not a PNG file" error
                                  gener7 Adobe Community Professional & MVP

                                  Where are you getting your .png files from? Are they downloaded from the web, emailed, or generated by another app?

                                   

                                  Photoshop does not create the problem, it reads the file header, and if it doesn't match the extension, gives you the error message.

                                   

                                  For now open the errant file in Preview and File > Save in order to fix it. What extension is attached?

                                  • 14. Re: "Not a PNG file" error
                                    AdChix Level 1

                                    I created the one in the video - in photoshop - yesterday. But it is doing it on jpgs as well - with jpg extension. Why would it do that when I'm not even trying to open a png?

                                    • 15. Re: "Not a PNG file" error
                                      gener7 Adobe Community Professional & MVP

                                      If Photoshop is doing this and this problem just came up, I would recommend a Preferences reset.

                                       

                                      Here's how to do this:

                                       

                                      Reset Prefs CC 2015.png

                                       

                                      I'm not sure how your main disk drive is formatted. I presume APFS if it's a Solid state drive and HFS+ for the others. I'd advise running Disk Utility First Aid to see if there are any problems.

                                       

                                      I don't know if you put your Mac to sleep like I do, but a restart has been known to clear up problems as well.

                                      1 person found this helpful
                                      • 16. Re: "Not a PNG file" error
                                        AdChix Level 1

                                        I will give it a try. Thank you.

                                        • 17. Re: "Not a PNG file" error
                                          davescm Adobe Community Professional

                                          Hi

                                          Open the file with a text editor/hex editor and see what the first characters say. Those first characters show the file type.

                                           

                                          For png they will be ‰PNG , for jpeg  ÿØÿá

                                           

                                           

                                          Edit : Sorry - I've just realised you are seeing this on more than one file. In that case the adice from gener7 is the best.

                                           

                                          Dave

                                          • 18. Re: "Not a PNG file" error
                                            ysan Level 1

                                            Thank you for your help

                                            • 19. Re: "Not a PNG file" error
                                              AdChix Level 1

                                              I installed updates, rebooted and everything seems to be fine now. files that wouldn't open previously are opening.

                                              1 person found this helpful
                                              • 20. Re: "Not a PNG file" error
                                                gener7 Adobe Community Professional & MVP

                                                I noticed MacOS was 10.13.5. instead of 10.13.6, and of course I did not ask what version of CC 2018 you had, which should have been 19.1.5. I once had those versions and never had a file problem, but it goes to show not all systems are equal even in the Mac world.

                                                 

                                                Glad to hear it's solved.

                                                 

                                                Gene