I have a few images that are essentially line drawings (B&W) that I want to make larger for presentation (i.e., click for larger size) on our new Website. The current size is not large enough.
If I increase pixel sizes, the quality is terrible. For example, see: www.wilmotcotest.com/products/rivetless-chain/images/standard-chain-dr awing.jpg on our 'test Website'. [Please note Website is work-in-progress.]
Settings *jpg: Width - 270; Height - 138; Scale styles - Y; Constrain proportions - Y; Resample image - Bicubic
If I increase *jpg to Width - 450; Height - 230, I get UGLY.
When I Save for Web as *gif, I change Width - 450; Height - 230, it still appears fuzzy, although not as much.
Thanks in advance.
K. Glenn Cole
Wilmot Company, Inc.
First, I suggest using PNG, not GIF. You might get better quality overall.
Assuming the images are pixelized, not vector shapes in some master file, you might be able to make use of something like the Alien Skin Blow Up 3 plug-in to upsize them and retain sharp edges.
I would convert those Raster Images to Vector. That can be done with a manual "trace" in either PS, or AI, though AI would be my choice. Also, AI might be able to do a good job (at least get you started) with Smart Trace.
Once in Vector, you can Scale Up/Down, with zero loss in quality, and when done, just Rasterize. I think that PNG would be my choice for the output.
I remembered that I had the original *.ai files that habeen developed by an outside party. I decided to test one image.
I transformed the image 200% and Save for Web as *.gif, inserted into my EW4 and *bingo*... exactly what I wanted. Crisp and clear.
I'll take a look at *png later when I get a chance.