Security PDF
Compare PDF
Compare two PDFs page by page and download a difference report.
Runs entirely in your browser — the file never leaves this device
100% FREE
No subscription required
COMPLETELY PRIVATE
Your files are never uploaded anywhere
CLIENT-SIDE PROCESSING
All conversions happen in your browser only
YOUR DATA IS YOURS
We process everything locally on your device
Drop your files here
or click to choose from your device
Select filesAbout Compare PDF
See which pages differ between two versions of a document and which words were added or removed.
How to use Compare PDF
- 1Click "Select files" or drag and drop two PDFs into the box above.
- 2Press "Run Compare PDF". The conversion runs on your own device, usually in a few seconds.
- 3Download a comparison report. Nothing is uploaded or stored on any server.
Tips for the best result
- Works on text-based PDFs; scans need OCR first.
Frequently asked questions
Is the Compare PDF tool free?
Yes. It is completely free, with no sign-up, no watermark and no daily limit.
Are my files uploaded to a server?
No. FlashFile processes your files entirely inside your browser, so they never leave your device.
Is there a file size limit?
There is no fixed limit. Files up to about 200 MB work on most computers; very large files depend on your device memory.
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