Files never leave your device.How it works
How to invert PDF colors
- 1Drop your PDF above (or click to select).
- 2Click Invert colors.
- 3Download the inverted PDF.
Frequently asked questions
- Will the text still be selectable?
- No. Inverting colors renders each page to an image, so the result looks right but text is no longer selectable or searchable. Keep the original if you need the text.
- Does my file get uploaded?
- No. Pages are rendered and inverted entirely in your browser — nothing leaves your device.
- Is this good for reading at night?
- Yes. A white page becomes dark and black text becomes light, which many people find easier on the eyes in low light.
Dark mode for any PDF
Bright white pages are hard on the eyes at night, and dark-background designs waste ink when printed. Invert Colors flips every color in the document — white to black, black to white — so a page reads comfortably in the dark or prints without flooding the paper.
How it works
Each page is rendered and its colors are inverted, then rebuilt into a new PDF at the original page size. Because this is a visual transform, the pages come out as images: they look correct but are no longer selectable text, so keep your original if you need to copy from it.
Notes and limits
Rendering runs locally at a balanced resolution, so even a long document is inverted without anything leaving your device. Password-protected PDFs must be unlocked first.
What inversion actually does to the page
Each page is rendered to a bitmap, and then every pixel's color is flipped to its opposite — white becomes black, and every shade in between swaps to its complementary value. That's a full-page image operation, not a selective one, so it treats text, backgrounds, and any embedded photos exactly the same way. It's why the result is reliable for typed documents but can look odd on anything with color photography, since a photo's colors invert into unnatural hues rather than a simple light-to-dark swap.
When it's genuinely useful
Slide decks with a white background exported for offline reading, lecture notes, or a code listing printed from a light-theme editor are all good candidates — flipping them gives a dark background you can read comfortably at night or under low light, without needing your PDF reader to support a dark mode of its own. It's also a quick way to preview how a document would look with reversed contrast before deciding whether to redesign it properly.
When to skip it
Skip inversion for anything you'll need to edit, copy text from, or print in its original colors afterward, since the output is image-based — keep your source file. For scanned documents you plan to search later, run OCR on the original before inverting, not after. To shrink the resulting image-heavy PDF, follow up with Compress PDF.