PDF Dark
Convert any PDF to dark mode — fully in your browser
PDF Dark launched on July 17, 2026 with 9 votes, #1,899 of 24,623 launches that month and more than 90% of that year's launches.
What it does
Convert any PDF to dark mode or night mode in your browser. Free, no upload, no signup. Keeps images in original color. Download as a permanent dark PDF.
Read any PDF in dark mode or night mode right in your browser. Free, no upload, no signup. Need to keep it? Convert and download a permanent dark PDF.
Drop a PDF and read it on a dark background right here — pick a theme, tune darkness and warmth, and page through comfortably at night. The whole thing runs in your browser: no upload, no signup, no install. Want to keep the dark version? Invert the colors and download the file . The same page, three ways. A basic inverter flips every pixel, so photos come out as film negatives. PDF Dark darkens text and background but detects photos and keeps their colors. Left: the original page as rendered. Middle: the same page after a raw RGB pixel inversion — the method most basic tools use. Right: real output from this converter (Midnight theme, Auto image mode). There are a few ways to read PDFs in…from pdfdark.org
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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.
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Source: Product Hunt launch ↗
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