Upload an original and a modified PDF to compare them side by side, overlay, swipe, or difference view — and instantly see what was added, removed, or changed. FREE online comparison. No watermarks, no registration. Compare two PDFs and spot the differences instantly.
Review, edit, convert, and organize your PDF after comparing your files
Upload two versions of a PDF and let our browser-based comparison tool show you exactly what changed — line by line, page by page. Switch between side-by-side, overlay, swipe, or difference view. No installations, no watermarks, no uploads to a server.
View the original and modified PDF side by side, blended together in Overlay mode, revealed with a draggable Swipe divider, or as a high-contrast Difference view that highlights every pixel that changed.
The tool extracts the text layer from each page and compares it line by line, clearly marking additions, removals, and modifications. Fine-tune the comparison with Options: ignore case, ignore spaces, or ignore repeating headers and footers.
Both PDF files are processed entirely inside your browser. Nothing is uploaded to a server, making it safe for contracts, legal drafts, and confidential documents. Export the results as an annotated PDF, a side-by-side report, a CSV/TXT change list, or a PNG snapshot.
Comparing PDF versions is essential for contracts, legal review, academic editing, and quality control. Here is how professionals use PDF comparison in daily workflows.
Legal teams often receive redlined or renegotiated contract versions as separate PDFs. Comparing them side by side, or exporting an annotated PDF, instantly reveals which clauses were added, removed, or reworded, without manually reading both documents line by line.
Writers, editors, and academics frequently exchange revised drafts as PDFs. Comparing an original manuscript with an edited version highlights exactly what the reviewer changed.
Before publishing an updated report, policy, or form, teams need to confirm nothing was accidentally altered. The Difference view catches unintended pixel-level changes before documents go live.
Upload the original PDF and the modified PDF — comparison starts automatically. Switch between Side by side, Overlay, Swipe, or Difference view from the toolbar.
It detects added lines, removed lines, and modified text on a per-page basis by comparing the text layer of each document, and can also show pixel-level visual differences.
Yes. Scanned PDFs have no text layer, so a visual comparison (Overlay, Swipe, Difference) is used by default. You can also click "Recognize text (OCR)" to extract text from scanned pages and get a text-level diff.
Options lets you ignore upper/lower case, ignore spacing differences, and ignore repeating headers and footers, so the diff focuses on meaningful content changes.
You can export an annotated PDF with highlighted changes, a side-by-side PDF report, a change list as CSV or TXT, or a PNG snapshot of the current view.
Each PDF can be up to 70 MB. Larger files may take longer to process but are supported within this limit.
Yes, both files (and any OCR processing) are handled entirely in your browser. Nothing is uploaded to any server, ensuring full privacy.
No, the tool cannot process encrypted or password-protected PDFs. Please remove the password before uploading.
Yes, if one document has more pages than the other, the extra pages are shown as additions when you reach them.
Yes, the tool is fully responsive and works on smartphones and tablets, with processing happening locally on your device.
After comparing your documents, you may also want to merge multiple PDFs, remove unwanted pages, or compress your PDF before sharing it.
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