Visual regression testing without false alarms. Compares your page to a baseline and ignores dynamic content. Runs 100% locally.
Users
541
+63 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
3
0 in 30 days
Store rank
#42K
#35K among extensions
Version
1.1.0
updated 25 Jul 2026
Users
monthly, 16 months
Latest, 15 Oct 2026:541 usersMove the mouse over the chart for any month
Ratings count
monthly, 16 months
Latest, 15 Oct 2026:3 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 UI Testing Inspector
An extension that finds visual regressions. It shows real changes and stays quiet about everything else.
Take a baseline of your page. Make your changes. Click Compare. The report shows only what actually changed.
Why the report stays clean
🔸 The extension compares your page to a baseline. Overlaps that were always part of the design are not errors.
🔸 Carousels, banners, timers and ads are detected and excluded automatically. Nothing to configure.
🔸 Tested on real websites. Thousands of false positives from pixel tools drop to zero here.
Privacy
Screenshots and data never leave your computer. No cloud, no accounts, no subscriptions.
What is in the report
🔸 A one-line verdict. You see right away if the page is fine.
🔸 Findings in plain language. For example, "a block overlaps a button". Each one comes with a screenshot crop and a highlight.
🔸 Text changes. Before and after, with changed words highlighted.
🔸 A slider to compare the baseline with the current version, plus a difference map.
🔸 Export the report as a single file with all screenshots. Send it to a client or teammate. It opens without the extension.
Responsive audit
📱 Check your page at 320, 768, 1024, 1440 or your own widths. The report shows where the layout breaks and includes a screenshot for every size.
It can also
🔸 Capture the whole page, including the part below the fold
🔸 Spot clipped text and blocks that stick out of their containers
🔸 Flag accessibility issues, such as images without descriptions
🔸 Keep your last 10 reports. Reopen any of them anytime
How it works
1️⃣ Open your page and take a baseline
2️⃣ Change your code and content
3️⃣ Click "Compare with baseline". The report opens in a new tab
4️⃣ Happy with the new version? Update the baseline in one click
Who it is for
➡️ Frontend developers. Catch regressions before you commit
➡️ QA engineers. Visual checks without CI or setup
➡️ Freelancers and agencies. Send clients a one-file report
➡️ Designers. Quickly check the implementation against the mockup
Questions and answers
❓ What about carousels, ads and clocks?
💬 The extension finds dynamic content automatically and excludes it from the comparison.
❓ Is my data safe?
💬 Yes. Everything is stored and processed only in your browser.
❓ Does it work on localhost?
💬 Yes. It is great for local development.
❓ Do I need an account or setup?
💬 No. Install the extension and click the button.
Growth
Window
Users
Change
Ratings
Rating
7 days
+14
+2.7%
0
0.00
30 days
+63
+13.2%
0
0.00
6 months
+187
+52.8%
0
0.00
1 year
+464
+602.6%
+2
0.00
Chrome Web Store search rankings
Where UI Testing Inspector appears when people search the store, with the 30 day change