pdfdark.com – view pdf's in "dark mode" all on client
I wanted a way to read PDFs at night and not burn my retinas out so I whipped together this super simple website with Claude to solve my problem. It uses Mozilla's pdf.js library to load and render a PDF and then inverts the colors with CSS. It has basic controls like zoom in, zoom out, reset zoom, previous and next page. There are some keyboard shortcuts that you can find by toggling the "q" key.
In plain words
pdfdark.com is a web-based PDF viewer that applies dark mode by inverting colors, designed for comfortable nighttime reading. It uses Mozilla's pdf.js library to render PDFs entirely in the browser and offers basic navigation controls including zoom, page navigation, and keyboard shortcuts. The tool processes all files client-side without uploading documents to a server.
written from the facts on this page · September 2026
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