OnlineDiff checker

PDF Diff Checker

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Compare PDF documents visually or by wording

Compare two PDF files online page by page and word by word. Visual rendering and text extraction in your browser with zero upload.

PDF comparison often requires two distinct perspectives: visual layout fidelity across rendered pages, and semantic text differences across contracts or reports. This PDF diff tool offers both modes.

All PDF rendering and text parsing executes locally in your browser tab via PDF.js. No sensitive agreements or confidential documents ever leave your machine.

For Word .docx files, use Word Diff. For images, use Image Diff.

Frequently asked questions

How does PDF Diff compare documents?

PDF Diff provides both visual page-by-page comparison and extracted wording text comparison.

Does PDF Diff read text from scanned documents?

Wording comparison reads embedded digital text streams. Scanned images are compared via visual mode.

Is there a page limit for PDF Diff?

There is no hard limit, though large PDFs depend on your device memory.

Are my PDF documents uploaded?

No, PDF rendering and text extraction run entirely via local PDF.js in your browser.