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Convert any PDF to dark mode, full color invert, sepia, or grayscale — permanently, not just as a display filter. Unlike PDF viewer night modes that only affect your screen, ihatepdf rewrites the actual color operators inside the PDF so the result is permanent in every viewer. Text stays fully selectable and searchable.
To invert PDF colors free, upload your PDF, choose a color mode, and download — the change is baked into the file, not just a screen filter. On ihatepdf, pick Dark Mode (inverted), Full Invert, Sepia, or Grayscale, and the new colors render correctly in every PDF viewer on every device. Text stays selectable, and your file is never uploaded to a server.
Most PDF apps that offer a "night mode" only recolor the document on your own screen — the file itself is unchanged, so the moment you open it on another device or send it to someone, it is bright white again. ihatepdf works differently: it permanently inverts the colors inside the PDF, turning white pages into dark backgrounds with light text that stays that way in every reader, including Chrome, Acrobat, Apple Books, Kindle, and mobile viewers. This effectively turns any PDF into a dark-mode e-book you can read at night without eye strain, then keep or share. Because the color operators are rewritten locally, your document is never uploaded to a server.
Dark mode reduces eye strain when reading long documents at night or in low-light environments. If you regularly read PDFs on a device that doesn't support automatic dark mode for PDFs — or if you want to send a dark-mode version to someone else — permanently converting the PDF's colors is the only reliable solution. ihatepdf rewrites the color data in the PDF structure itself, so the result looks correct in every PDF viewer without any viewer settings required.
Sepia mode applies a warm amber tone to the PDF — many readers find this softer on the eyes than both bright white and high-contrast dark mode. It is popular for reading long-form text documents, books, and academic papers. Grayscale mode removes all color from the document, reducing file size slightly and making documents suitable for black-and-white printing without color ink waste.
PDF viewer night modes apply a display filter to your screen only — the underlying file is unchanged. ihatepdf rewrites the color operators inside the PDF file itself so dark mode is permanent in every viewer on every device.
Yes. The tool transforms color operators without touching the text layer. You can still select, copy, and search text in the output PDF.
Yes. Because the color change is baked into the file, it renders correctly in every PDF viewer — Acrobat, Preview, Chrome, Edge, and mobile viewers.
No. The entire color transformation pipeline runs locally using WebAssembly. Your file never leaves your device.
Yes. The Grayscale mode converts all page content to black and white. This is useful for reducing printer ink costs or meeting submission requirements for greyscale-only documents.
Yes. Instead of a viewer that only inverts colors on your own screen, ihatepdf permanently inverts the PDF's colors so it reads in true dark mode in any reader — desktop, mobile, Kindle, or e-reader. Upload, choose Dark Mode, and download a night-friendly version you can read or share anywhere.
Inverting to a dark background uses more ink, but the Grayscale and high-contrast modes can reduce color-ink usage. For ink savings when printing, choose Grayscale; for comfortable night reading on screen, choose Dark Mode (inverted).
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