Test Coverage Heatmap icon

Test Coverage Heatmap

by Chathumal Sangeeth · Developer Tools
Manifest V3 Free
View in Chrome Web Store Data as of 16 Oct 2026

Visual UI coverage tracker for manual testing sessions — see what's been tested and what hasn't

Users
9
0 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#203K
#170K among extensions
Version
1.1.0
updated 28 Jul 2026

Users

monthly, 5 months
0510May 2026Aug 2026Oct 2026
Latest, 16 Oct 2026: 9 usersMove the mouse over the chart for any month

Ratings count

monthly, 5 months
001May 2026Aug 2026Oct 2026
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 Test Coverage Heatmap

Test Coverage Heatmap brings code-coverage-style visibility to manual QA testing. Every time you click a button, fill a field, or interact with any UI element during a test session, the extension tracks it. When you're done, overlay a live heatmap directly on the page to instantly see your blind spots. ── HOW IT WORKS ── 1. Click the extension icon and hit "Start Recording" 2. Test your web app normally — click, type, navigate 3. Click "Show Heatmap" at any time to see coverage overlaid on the live page 4. Stop recording and export a full report ── WHAT YOU GET ── ▸ Coverage Mode — green highlights show tested elements, red shows everything you missed ▸ Frequency Mode — a blue→orange→red gradient shows which elements were hit most ▸ Live coverage badge — a floating "67% covered · 14/21" counter updates in real time as you test ▸ Session history — all sessions saved locally, compare across runs ▸ HTML & JSON export — shareable coverage reports for your team or bug reports ── WHO IT'S FOR ── • QA engineers running manual test passes who want to track what they've actually covered • Developers doing exploratory testing on their own features • Team leads who need proof of test coverage without full automation ── PRIVACY ── All data is stored locally on your device using Chrome's built-in storage. Nothing is sent to any server. The extension only activates on pages where you explicitly start a recording session. Works on any website, including SPAs (React, Angular, Vue) with automatic detection of route changes.

Growth

WindowUsersChangeRatingsRating
7 days−1−10.0%00.00
30 days0+0.0%00.00

Version history

2 versions recorded
1.1.028 Jul 2026
1.0.023 May 2026

Details

Category
Developer Tools
First seen
23 May 2026
Size
42 KB
Languages
en
Pricing
Free
Privacy policy
gist.github.com
Extension ID
icllbjkkkpdgfnmbpbnecjcebefnfnai

Permissions and risk

Elevated riskimpact 3, likelihood 3
Permissions
storageactiveTabtabs

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