Compare PDFs

Overlay two PDFs page by page and highlight what changed in red.

This free tool runs entirely in your browser. Your PDF is processed on your own device and is never uploaded to a server — no sign-up and no install needed.

More PDF tools

• PDF ↔ Image — Convert all or selected pages to PNG/JPEG images.
• Merge PDF — Combine multiple PDF files in the order you choose.
• Split PDF — Break a PDF into multiple files by page range.
• Compress PDF — Shrink scanned or image-heavy PDFs, one file or many at once (text becomes non-selectable).
• Delete Pages — Remove only the pages you don't need.
• Rotate & Reorder — Rotate pages and drag them into the order you want.
• Watermark — Stamp a text watermark across every page, on one PDF or several at once.
• Extract Text — Pull the text out of a PDF as a plain .txt file.
• Edit Metadata — View or clear a PDF's hidden author, title, and other info.
• Add Page Numbers — Add page numbers to every page — pick the position, format, size, and color. Works on one PDF or several.
• Grayscale — Convert every page to black and white for printing or smaller files.
• Image Stamp — Place a signature, seal, or logo image onto every page.
• Resize Pages — Unify mismatched scanned page sizes to A4/Letter, or just add margins.
• Password Protect / Unlock — Lock a PDF with a password (AES-256, one or many files at once), or remove the password from a PDF you own.
• Extract Pages — Pick the pages you need and save them as a new PDF. Page-range input supported.
• Extract Images — Pull the photos and pictures embedded in a PDF out at their original size.
• Remove Blank Pages — Automatically find blank pages in a scan and delete them in one go.
• Crop Pages — Trim the outer margins off every page automatically, or cut exactly as much as you want.