French Fried Files

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Cat VS Quality

 
Areas of solid or similar colors are supposedly easy to compress, so a mostly gray-white photograph of one of my cats watching a squirrel was given the same treatment as the butterfly image.

When saved as a 100% quality JPEG, this image is 63.4 KB, making it much smaller than the butterfly image from the start.


Quality Examples

75% Quality

Base Image

Compressed Image: 14.5 KB
Difference: 9.80%
Most image editors default to a quality of 75% when saving JPEGs, as it's generally a good balance between file size and quality. This is definitely the case here, as the images don't seem to look different while the new image is 50 KB smaller than the original.


50% Quality

Base Image

Compressed Image: 9.95 KB
Difference: 18.1%
Reducing the quality further has shaved another 5 KB off of the file size, but the image is starting to look a little fuzzy or out of focus.


25% Quality

Base Image

Compressed Image: 6.75 KB
Difference: 31.6%
Artifacts are starting to be visible in the area behind the squirrel, so this might be pushing the line on how low the quality can reasonably go.


10% Quality

Base Image

Compressed Image: 4.16 KB
Difference: 61.9%
At 10%, this image resembles the less than stellar quality of 256-color video clips from the Windows 3.1 era, and there aren't many people who really want to revisit that period of digital video.


0% Quality

Base Image

Compressed Image: 2.47 KB
Difference: 90.2%
At this point, the image's colors have been almost completely lost, making it difficult to tell what we're looking at. The squirrel is unrecognizable. Of course, nobody would really use this improbably low quality setting, but it's worth exploring anyway.


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