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Бесплатно PDF Compare

Compare two PDFs page by page — side by side, as an onion-skin overlay, or with changed areas highlighted in red. Both files stay in your browser.

Без ограничений по размеруФайлы остаются приватнымиРегистрация не требуетсяБесплатно навсегда
Original (A)

Перетащите файлы или нажмите для выбора

PDF без ограничений по размеру файла

Выбрать файлы
Changed (B)

Перетащите файлы или нажмите для выбора

PDF без ограничений по размеру файла

Выбрать файлы

Ваши файлы никогда не покидают устройство. Вся обработка происходит локально в браузере.

Drop two PDFs to compare them page by page — side by side, as an onion-skin overlay, or with changed areas highlighted. Both files stay in your browser.

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Как это работает

Tools like Draftable and Adobe charge for good PDF comparison, and PDF24 uploads your files. This compares two PDFs visually in your browser — neither file leaves your device.

  1. 1
    You drop in two PDFs
    An "original" (A) and a "changed" (B). Both are rendered locally with pdf.js.
  2. 2
    Each page is rendered to an image
    The matching page from each document is drawn to a canvas at the same scale, in your browser.
  3. 3
    You choose how to compare
    Side by side, an onion-skin overlay with an opacity slider, or a pixel-difference view that highlights changed areas in red and reports the percentage changed.
  4. 4
    You page through the documents
    Step through every page; pages that exist in only one file are flagged.

Contracts and drafts are sensitive, and most comparison tools upload them. Here everything is rendered and compared on your device — ideal for reviewing revised agreements, statements, and documents privately.

Почему наш?

Completely free — no hidden costs, ever
No account, email, or login required
Files stay on your device — processing happens in your browser
Works on any device — phone, tablet, desktop
No watermarks on any output
Browser memory limits may apply for very large files

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