A JavaScript bookmarklet that simulates various types of color blindness on any webpage.
Colourblind is a JavaScript bookmarklet that simulates various types of color blindness on webpages. It applies color filters to help developers and designers test how their content appears to users with color vision deficiencies, improving accessibility by identifying potential visual issues.
Web developers, designers, and accessibility testers who need to quickly evaluate color contrast and visual clarity for users with color blindness.
It provides a simple, no-installation solution that runs directly in the browser, making accessibility testing more accessible and integrated into daily development workflows.
Colour blindness bookmarklet
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Simulates various conditions like protanopia and deuteranopia using color matrices from an archived resource, as listed in the key features.
Runs directly in the browser with no installation, highlighted in the README's simple instructions to copy bookmarklet.min.js into a bookmark.
Applies filters in real-time to any webpage for immediate visual feedback, enabling quick accessibility checks during design reviews.
Uses modern CSS3 SVG filters for accurate color transformation, though limited to browsers like Chrome and Firefox as noted in the README.
The README admits the color matrices 'may be inaccurate' as they are sourced from an archived page, reducing reliability for precise testing.
Only works in Chrome and Firefox due to SVG filter dependence, excluding users on other browsers without explicit support.
Lacks capabilities such as saving settings, automation, or integration with development tools, making it basic for complex workflows.