Colour blindness bookmarklet
HTML JavaScript Makefile
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Alastair McGowan-Douglas
Latest commit fb77c1c May 27, 2015

This is a simple JS bookmarklet that will filter the current page according to various colour blindnesses.

The colour blind matrices were sourced from an archived page -

They may be inaccurate. Corrections welcome.

To use it, simply put the contents of bookmarklet.min.js into a bookmark or go to to see a demo.

This will only work on browsers that support SVG filters in CSS3 - but you don't really need to cross-browser test it for colourblindness so you only need one such browser.

By which I mean, it works in Chrome and Firefox.