Questions about reducing a file's size by automated pattern recognition, and the resulting changes in image quality.

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3
votes
2answers
371 views

Compress large PDF files in Illustrator

I am an unexperienced Illustrator user, so please bear with me if my question is very stupid: I have a large PDF file (5 MB+) [1] which is generated from a large dataset. The amount of details in the ...
-1
votes
1answer
739 views

Purple text on dark background too blurry when uploading to facebook (saved as png)

I'm going nuts here. I'll try to be straight to the point. I'm using Photoshop CC and have this dark background image for a poster with some text info. Sentences in white, three infos in purple, ...
1
vote
0answers
22 views

Target what svg compressor option messes up file for sketch 3

I am using https://jakearchibald.github.io/svgomg to compress my svg image, its pretty good at what it does, but after running image through it, sketch 3 messes it up and it looks like this: Where ...
1
vote
0answers
365 views

How do you export a jpeg with a selective compression mask from Photoshop CC 2014?

In fireworks, I can select parts of an image to keep at a lower compression (85) when exporting, leaving the rest of the image to be compressed at the higher setting (60). I cannot find that option in ...
0
votes
0answers
22 views

Gimp Image compression changes color

When I compress images in Gimp the photos seem to become noticeably more vibrant. Is there a way to fix this so that the color scheme remains close to the same? Ive uploaded the before and after ...
0
votes
0answers
82 views

Reducing a TIFF file size without compressing

I know about ZIP and LZW, but Costco online won't accept those file formats. So I need to reduce my large TIFF file from 137mb to 95mb (Costco maximum size) without using ZIP or LZW. It needs to ...
0
votes
0answers
37 views

Incorporating Rate Distortion Optimization in baseline JPEG Image Compression

I want to incorporate RDO in baseline JPEG implementation so that I will be able to achieve the desired bitrate using the algorithm. But the problem is the estimation of distortion without increasing ...