Compress large PNGs #1057
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Compress large PNGs #1057
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plemarquand
requested review from
0xTim,
alexandersandberg,
davelester,
daveverwer,
dempseyatgithub,
kaishin,
shahmishal,
timsneath and
federicobucchi
as code owners
Takes a pass at compressing the largest `.png` images across the site. As Sarunas pointed out in the forums (https://forums.swift.org/t/redesigned-swift-org-is-now-live/80296/13), the images for the landing page are quite large, where hero-bottom.png clocks in at 2302kb and swoop-0.png is 1611kb. Run `pngquant` over the largest images in the site with slightly lossy compression to improve the first load experience of the site. `pngquant` was run with the following to compress and replace images in place: `pngquant --quality=45-60 -f --ext .png **/*.png` Some results: `swoop-0.png`: 1611kb -> 369kb (77% reduction) `hero-bottom.png`: 2302kb -> 544kb (76% reduction) PNG retains a broad browser compabitility so it was favoured over using a new more compressable format like `.webp` or `.avif`
shahmishal
approved these changes
Jun 5, 2025
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Takes a pass at compressing the largest
.pngimages across the site.As Sarunas pointed out in the forums (https://forums.swift.org/t/redesigned-swift-org-is-now-live/80296/13), the images for the landing page are quite large, where hero-bottom.png clocks in at 2302kb and swoop-0.png is 1611kb.
Run
pngquantover the largest images in the site with slightly lossy compression to improve the first load experience of the site.pngquantwas run with the following to compress and replace images in place:pngquant --quality=45-60 -f --ext .png **/*.pngWhile this is a lossy compression, visual inspection in the PR diff view doesn't show major compression artifacts or colour distortion.
Some results:
swoop-0.png: 1611kb -> 369kb (77% reduction)hero-bottom.png: 2302kb -> 544kb (76% reduction)PNG retains a broad browser compatibility so it was favoured over using a new more compressible format like
.webpor.avif