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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://nixnet.social/objects/eccf9ce5-c627-4711-a95c-767ecd76f2f6">Amolith (amolith@nixnet.social)'s status on Wednesday, 04-Oct-2023 23:00:37 JST</a><a href="https://nixnet.social/users/amolith" title="amolith@nixnet.social"><img src="https://gnusocial.jp/avatar/5739-48-20220816104156.webp" width="48" height="48" alt="Amolith" style="position: absolute; left: 0; top: 0;">Amolith</a></section><article><p>Pro tip for optimising images before uploading them somewhere like fedi so the recipient(s) don’t have to download 12 MBs of unimportant detail</p>magick input.jpg -resize 1000x resized.jpg
du input.jpg resized.jpg # see the size difference
jpegoptim -s --all-progressive -m70 resized.jpg
du input.jpg resized.jpg # see the size difference
<p>Resizing the image does most of the heavy lifting. Very few people will blow it up fullscreen on a 4k display; 1000px wide is usually sufficient. The jpegoptim command strips metadata (such as location), turns it into a progressive JPG so it loads more pleasantly, then reduces the image detail by 30%</p><p>For PNGs, replace .jpg with .png and the jpegoptim command with</p>optipng -o6 -strip all resized.png
<p>It strips metadata and brute-forces common compression settings to find which one is more efficient.</p><p>Friends don’t let friends waste bandwidth! :akko_thumbup:</p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/2138002#notice-4196867">In conversation</a><time datetime="2023-10-04T23:00:37+09:00" title="Wednesday, 04-Oct-2023 23:00:37 JST">about a year ago</time> <span>from <span><a href="https://nixnet.social/objects/eccf9ce5-c627-4711-a95c-767ecd76f2f6" rel="external" title="Sent from nixnet.social via ActivityPub">nixnet.social</a></span></span><a href="https://nixnet.social/objects/eccf9ce5-c627-4711-a95c-767ecd76f2f6">permalink</a></footer></blockquote>

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Amolith (amolith@nixnet.social)'s status on Wednesday, 04-Oct-2023 23:00:37 JST Amolith
Pro tip for optimising images before uploading them somewhere like fedi so the recipient(s) don’t have to download 12 MBs of unimportant detail
magick input.jpg -resize 1000x resized.jpg du input.jpg resized.jpg # see the size difference jpegoptim -s --all-progressive -m70 resized.jpg du input.jpg resized.jpg # see the size difference
Resizing the image does most of the heavy lifting. Very few people will blow it up fullscreen on a 4k display; 1000px wide is usually sufficient. The jpegoptim command strips metadata (such as location), turns it into a progressive JPG so it loads more pleasantly, then reduces the image detail by 30%
For PNGs, replace .jpg with .png and the jpegoptim command with
optipng -o6 -strip all resized.png
It strips metadata and brute-forces common compression settings to find which one is more efficient.
Friends don’t let friends waste bandwidth! :akko_thumbup:
In conversationabout a year ago from nixnet.socialpermalink

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