Show HN: Simple image resizing/optimization service
My acid test for image scaling software:<p><a href="http://i.imgur.com/X9vKa2s.png" rel="nofollow">http://i.imgur.com/X9vKa2s.png</a><p><a href="https://i.scaley.io/png-256x128/i.imgur.com/X9vKa2s.png" rel="nofollow">https://i.scaley.io/png-256x128/i.imgur.com/X9vKa2s.png</a><p>This means that you don't use a linear color space for blending colors.<p>Sorry about the language, the image is not made by me [1].<p>[1] <a href="https://web.archive.org/web/20120904060524/http://www.4p8.com/eric.brasseur/gamma.html" rel="nofollow">https://web.archive.org/web/20120904060524/http://www.4p8.co...</a><p>edit:<p>I see that your backend relies on libvips to do the resizing. I have no experience with it, but I could make libvips-tools' vipsthumbnail program work correctly:<p><pre><code>  $ vipsthumbnail --linear -f tn_%s.png -s 256x128 gamma-1.0-or-2.2.png
</code></pre>
Note the "--linear" option, without it produces the same wrong image.