Toolbox for developers / Online PDF diff

PDF compare

This tool allows to compare PDF files and visualize the differences. It compares the text of PDF files.

You can see the user guide to help you to use this PDF compare tool.

First PDF to compare



Second PDF to compare







PDF comparison

First PDF document
Second PDF document



User guide

This tool allows to compare text of two PDF files, and visualize the diff.

Copy and paste, drag and drop your PDF files or directly type in the editors above, and they will be automatically compared!
You can also click on "load PDF from URL" button to load your file from a URL (Must be https).
You can also click on "Browse PDF file" button to load your PDF from a local file.

You can also directly compare two PDF files by specifying their urls in the GET parameters url1 and url2.
Example: https://extendsclass.com/pdf-diff.html?url1=https://extendsclass.com/first.pdf&url2=https://extendsclass.com/second.pdf

This tool highlights in red color the data which are different.


About PDF

The PDF (Portable Document Format) is a file format developed by Adobe in the 1990s. PDF is a popular format.

PDF files can contain text and images.

This online tool uses PDF.js library.



Load PDF From URL
You can report a bug or give feedback by adding a comment (below) or by clicking "Contact me" link (at the top right hand corner of the page).

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Disclaimer: The tools are provided "as is", without warranty of any kind, either express or implied.
Any links to third-party website or software available on this website are provided "as is",
without warranty of any kind, either express or implied and are to be used at your own risk.