Invert PDF colors
Turn white pages black and dark text light - a permanent dark mode that works in every PDF reader. Drag and drop your PDF below to get started.
Drag and drop a PDF here
Select a PDF to invert its colors. Text stays selectable and searchable.
How to invert PDF colors
1. 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.
2. 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.
3. Download the dark PDF
The inverted file downloads instantly. Text stays selectable and searchable, and the file size barely changes.
A dark mode that sticks
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
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.
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