Invert PDF Colours
Flip the colours of a PDF: white pages become black and black text becomes white. Great for reading at night, presenting in dark rooms, or printing dark slides without using a cartridge of ink.
Invert PDF Colours
Open · Preview · Invert
How to invert the colours of a PDF
Open your PDF
Drop the file onto the tool. The preview shows the inverted page.
Choose about photos
Invert pictures too, or keep photos natural.
Download
Press Invert colours and download.
Why use it
What this free tool does
Dark mode
White text on black pages, easy on the eyes at night.
Save ink
Turn dark slides into light pages for printing.
Text stays sharp
Nothing is turned into a picture.
Photos your way
Invert them, or keep them natural.
Live preview
Check every page first.
Private
Processed on your device.
Two ways to invert
"Invert pictures too" flips everything on the page, exactly like a negative. It works with every kind of content and keeps text selectable.
Untick it to invert only text, lines and backgrounds while photos keep their natural colours, which usually looks better for documents with pictures.
Tip: Printing dark presentation slides? Invert them first to save ink, then print in greyscale.
Your files stay on your device
Most online PDF sites upload your documents to their servers. Aleynray Ai does the work inside your browser instead, on your own computer or phone.
Nothing is sent anywhere, so contracts, bank statements, IDs and medical forms stay private, and there is no waiting for uploads.
- Free, with no sign-up or limits
- No watermark
- Files never leave your device
- Opens password-protected PDFs
- Works on desktop and mobile
Frequently asked questions
Will photos look like negatives?
If "Invert pictures too" is ticked, yes. Untick it to keep photos natural.
Can I switch it back?
Running the tool again on the inverted PDF restores the original colours.
Does text stay selectable?
Yes.
Is it free?
Yes. There is no sign-up, no limit on files and no watermark.
Are my files uploaded?
No. The tool runs inside your web browser and works on the file on your own device. Nothing is sent to a server, so private documents stay private.