Compare PDF – free online
Show a side-by-side document comparison and easily spot changes between different file versions.
How to use Compare PDF
- Open Compare PDF on ToolPlanet AI.
- Choose two versions of a PDF from your device, or drag and drop onto the page.
- Compare them side by side.
- Download every added and removed word highlighted.
Frequently asked questions
Is Compare PDF free?
Yes. Compare PDF on ToolPlanet AI is completely free, with no sign-up, no watermark and no limit on downloads.
Are my files uploaded when I use Compare PDF?
No. Compare PDF runs entirely inside your web browser, so your file never leaves your device and is not uploaded to any server.
What do I need to use Compare PDF?
Just a web browser such as Chrome, Edge, Safari or Firefox, on a computer or phone. You start with two versions of a PDF and get every added and removed word highlighted.
Do I need to install software or create an account?
No. Everything works online in your browser. There is nothing to install and no account to create.
More PDF Security tools
Edit PDF in the same font
Click any text to change it. Prices, names, dates — edits keep the PDF's own font. Add text, boxes and images, then save.
or drop a PDF here · files stay in your browser