Compares the rendered DOM of a webpage with the original server-side DOM to highlight differences and detect client-side changes.
Users
24
−2 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#142K
#119K among extensions
Version
0.3.0
updated 19 Aug 2025
Users
monthly, 15 months
Latest, 16 Oct 2026:24 usersMove the mouse over the chart for any month
Ratings count
monthly, 15 months
Latest, 16 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About DOMCompare
This tool's purpose is to find discrepancies between the Document Object Model (DOM) that a web server initially sends and the DOM that is actually displayed in a user's browser after JavaScript and other client-side scripts have run.
- Initial Capture: It first records the original DOM as it's delivered from the server.
- Client-Side Rendering: It then allows the page to fully load and render in a browser, capturing the final, modified DOM.
- Comparison Algorithm: The core of the tool is a comparison algorithm that checks for changes between the two versions. This can include: element additions or removals, attribute changes (e.g., a class being added or removed), text content modifications.
This process is crucial for web developers and quality assurance testers to:
- Debug JavaScript issues: Pinpoint exactly what a script is changing on the page. 🧐
- Ensure rendering accuracy: Verify that the page looks and behaves as intended.
- Detect unexpected changes: Identify any unintended side effects of client-side code.
- Monitor for security vulnerabilities: Catch malicious script injections that alter the page's structure.