Color Vision Deficiency PDF Viewer

Select a PDF to get started.

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Does this upload my PDF anywhere?

No, your files stay on your own computer! This site just displays them for you in the browser, and applies a color mask to each page to simulate different kinds of color vision deficiency.

Who made this site?

That would be me — Marie Chatfield. This project was built using the PDF.js platform (created by Mozilla) and the color blind SVG filters found in the colourblind bookmarklet (created by Alastair Douglas). View the source code of this project and contribute on GitHub.