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CompressingImages.md

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This is for in the future when I want to compress more images or anyone else for that matter.

Lossless

good at reducing the pallet, a first step for images that have a limited number of colors, bad at actually compressing things though, for all formats except webp.

PNGs:

good ratios, though not as good as other options, though better compatibility

oxipng

Seems to be the best of all of the options, not sure if it's all you would need, but it did shrink pngs further than the other two tools afterwards.

oxipng -o max --strip all --alpha <filename here>

all may be replaced with safe if you want to be a bit safer

pngcrush

Good, but should be ran before optipng, but isn't as good as it, use in tandom

optipng

The second best tool to really shrink pngs to be as small as they can be.

WEBP

it's better than png, though I have a feeling more could be done to compress these

cwebp

so far this seems to be the best way to compress webp images with a command that kinda looks like this one

cwebp -lossless -z 9 in.webp -o out.webp

while for all other formats squoosh is not recommended, for webp it'll be identical due to cwebp using the same libary as squoosh.

AVIF

As far as I can tell, this format just sucks at its job, at least for lossless images

JPEGXL

Really good at compression size, though it's not supported anywhere outside of safari as of now.

cjxl

this command should do the trick for compressing

cjxl input.png output.jxl -q 100 -e 10

Vector

SVGs:

great tool, if anyone knows how to squish them further, let me know, some manual work may go a long way to help shrink svgs, though I'm not doing that right now lol.

I may look into other formats soon as well, though these are the main two I'm currently using