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Runs in your browser - the file is never uploaded
Invert PDF colors - dark mode for any PDF
Invert PDF colors for free and download a dark mode version of your document. White backgrounds become black, dark text becomes light, and existing text stays selectable. No upload or sign-up.
How to invert PDF colors
- 01
Choose your PDF
Drag and drop the file you want to invert. Files up to 50MB are supported, and nothing is uploaded - it all happens on your device.
- 02
Colors are inverted
Every page is inverted: white backgrounds become black, dark text becomes light, and images are inverted in place. The result looks the same in every reader - Acrobat, Chrome, Kindle, or your phone.
- 03
Download the dark PDF
The inverted file downloads instantly. Text stays selectable and searchable, and the file size barely changes.
Save a dark mode PDF you can open again
Some PDF readers offer a dark theme, but it usually darkens the app - not the document. The page itself stays a bright white rectangle, which defeats the point at night. And the moment you open the file somewhere else, the dark theme is gone.
This tool writes the inversion into the PDF itself. The dark version stays dark in every viewer: Adobe Acrobat, Chrome, Safari, Preview, e-readers, and mobile apps. Ideal for reading long documents at night, on OLED screens, or with light sensitivity.
Your text stays text - no blurry screenshots
Most online color inverters rasterize the document: they turn every page into a picture, invert the picture, and glue the pictures back into a PDF. The result can't be searched, text can't be selected or copied, zooming shows pixels, and the file balloons in size.
This tool inverts colors using the PDF's own rendering model instead of flattening pages to images. Text remains real, selectable, searchable text. Vector graphics stay sharp at any zoom. The file grows by only a few bytes per page.
Reversible, free, and private
The inversion is lossless and reversible - run the inverted file through the tool again and you get the original look back.
Everything runs in your browser: the PDF is never uploaded, stored, or seen by a server. Free, no watermark, no sign up.
Frequently asked questions
How do I make a PDF dark mode?
Drop the PDF into the tool above and download the inverted copy. Its pages are dark with light text, and unlike a reader's dark theme, the dark mode is saved in the file - it stays dark in Acrobat, Chrome, Preview, and on your phone.
Does the inverted PDF work in every reader?
Yes. The inversion is written into the file using standard PDF blend modes (PDF 1.4, from 2001), so it renders dark everywhere - Acrobat, browsers, e-readers, and mobile apps.
Can I still select and search text after inverting?
Yes. Unlike tools that convert pages to images, this keeps the original text and graphics intact - text stays selectable, searchable, and sharp at any zoom level.
Can I undo the inversion?
Yes. Running the inverted file through the tool again restores the original appearance. Keeping your original file is still the safest option.
What happens to images and photos?
They are inverted along with everything else, like a photo negative. For documents that are mostly text this looks great; photo-heavy documents may look unusual - that is the nature of color inversion.
Is my PDF uploaded to a server?
No. The whole process runs in your browser. The file never leaves your device.
Can I invert the page order instead of the colors?
This tool only inverts colors - the pages stay in the same order. To flip the page order so the last page comes first, use the free Reverse PDF page order tool instead.
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