Compare CAD Documents Online

Online diff tool to compare CAD documents from any device, with a modern browser like Chrome, Opera and Firefox.

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Sometimes you need to compare two similar or completely different CAD files in order to find common or, conversely, excellent content in them. Luckily, we present you with our free comparison app "Comparison" that allows you to do this automatically.

Comparison is a reliable and powerful app which allows you to identify every change between different CAD files. You can directly drop and compare files in over 100 different formats. Thanks to Comparison, you won't have to spend a lot of time and painstakingly matching each line of text. The "Compare now" button can detect differences between versions of a CAD document.

  How to compare CAD documents online

  • Click inside the file drop area to upload a CAD file or drag & drop a CAD file.
  • Click "Compare Now" button to compare / view / download changes instantly.
  • View list of changes in a panel.
  • View and navigate between pages.
  • Download a CAD file with comparison results.


  • ❓ How can I compare CAD documents?
    First, you need to upload files: drag & drop your CAD files or click inside the white area to choose a file. Then you have to click the button "Compare now"
  • ⏱️ How much time does it take to compare CAD documents?
    The comparison app is fast with small files and longer with large files. Typically it takes a couple of seconds to compare regular CAD documents.
  • 🛡️ Is it safe to compare CAD files using free GroupDocs Comparison App?
    Of course! The files are stored on secured server and will be deleted after 24 hours.
  • 💻 Can I compare CAD documents on Linux, Mac OS, or Android?
    Yes, you can use the free GroupDocs Comparison on any operating system that has a web browser. Our CAD Comparison App works online and does not require any software installation.
  • 🌐 What browser should I use to compare CAD documents?
    You can use any modern browser to compare CAD documents, for example, Google Chrome, Microsoft Edge, Firefox, Opera, or Safari.
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