PDF Difference Checker

Compare Two PDF Files and Find Text Changes

Free Online Tool | Added Text | Removed Text

Privacy Notice: PDF files are processed in your browser using a PDF text-reading library. The tool does not intentionally upload your selected documents to our server. Avoid using sensitive documents on devices you do not trust.

Original PDF

Select the older or original version of your document.

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Updated PDF

Select the newer or revised version of your document.

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Select two PDF files to begin comparing their text.

About the PDF Difference Checker

The PDF Difference Checker is a free online tool that helps you compare two versions of a PDF document. It identifies text lines that appear in the updated PDF but not in the original, as well as text lines that appear in the original but not in the updated version.

Key Features

  • Compare two PDF documents online.
  • Identify added text in the updated document.
  • Identify removed text from the original document.
  • Review changes in recruitment notices, reports, announcements and other text-based PDFs.
  • Download a text comparison report for future reference.
  • Use the tool on compatible mobile phones, tablets and computers.

How to Compare PDF Files

  1. Select the original PDF document.
  2. Select the updated PDF document.
  3. Click the Compare PDF Files button.
  4. Review the added and removed text sections.
  5. Download the comparison report if required.

Who Can Use This Tool?

This tool can help students, job applicants, researchers, office workers and anyone who needs to check changes between two text-based PDF documents. It may be useful when comparing recruitment notifications, examination notices, fee details, reports and document revisions.

Important Limitations

This tool compares extracted text lines, not the visual appearance of PDF pages. Changes in images, signatures, colours, formatting, tables or page layout may not be detected accurately. Scanned PDFs that contain images instead of selectable text may produce little or no extracted text. OCR is not included. Repeated lines and rearranged content can also affect the comparison results.

Privacy and Security

PDF text extraction takes place locally in your browser after the required PDF processing library loads. Your selected PDF files are not intentionally sent to our server by this tool. The library is loaded from an external content delivery network, so an internet connection is required to load it.

Disclaimer: Always verify important changes against the original documents. This tool is provided for general informational purposes and does not guarantee that every document change will be detected.