Compare PDF Online

Put two PDFs next to each other and see what moved, changed or was removed

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Aspose.PDF Download Developer API

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Our free online application makes it simple and efficient to compare PDF files directly in your browser, without installing any software. Whether you need to compare PDF documents for business, study, or personal use, this tool provides accurate results on any device — desktop, laptop, tablet, or smartphone.

Why use this PDF doc compare tool?

When working with contracts, reports, legal files, or academic papers, it is crucial to see even the smallest differences. This application helps you spot edits, deletions, and insertions with ease. With PDF to PDF comparison, you can be confident that no detail is missed.

Three modes of comparison

Strikeout view – deleted or modified words are shown as crossed out, making it easy to recognise what has changed in the text. This is perfect if you want a quick overview of all edits.

Side-by-side view – both versions of the document are displayed in parallel. Differences are highlighted in colour in each file, which gives you a clear and structured comparison in a PDF experience.

Overlay view – changes are layered on top of each other in one file, so you can instantly see how text was altered. This unique PDF doc compare mode is useful when you want a direct visual match of edits.

Features of the application

Use cases

Secure and private

Files are processed on our servers and deleted automatically after 24 hours. Your documents remain secure, and you can run PDF doc compare operations without worrying about privacy.

Conclusion

If you are looking for a simple, fast, and reliable way to compare PDF files, this online app is the solution. With three different modes, cross-platform support, and no software installation required, it provides the most convenient PDF to PDF comparison tool available. Try it today and experience how easy it is to compare PDF documents anywhere, anytime.

How to compare PDF files

  1. Open the free Comparison app in your browser.
  2. Click inside the file drop area to upload the files, or drag and drop them.
  3. Click the 'COMPARE' button to compare the two files.
  4. Instantly download, view or email the output file.
  5. Note that the files will be deleted from our servers after 24 hours and the download links will stop working.
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