DevRuler Pro icon

DevRuler Pro

by ss0347404 · Developer Tools
Manifest V3 Free
View in Chrome Web Store Data as of 16 Oct 2026

Layout debugging: rulers, responsive testing, box model visualization, overflow detection & breakpoint diffing — no DevTools needed.

Users
4
−4 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#265K
#221K among extensions
Version
1.0.0
updated 17 Feb 2026

Users

monthly, 8 months
036Feb 2026Jul 2026Oct 2026
Latest, 16 Oct 2026: 4 usersMove the mouse over the chart for any month

Ratings count

monthly, 8 months
001Feb 2026Jul 2026Oct 2026
Latest, 16 Oct 2026: 1 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 DevRuler Pro

Measure anything. Inspect everything. Test every breakpoint. All without opening DevTools. DevRuler Pro gives designers, developers, and QA engineers a floating toolbar that lives right on your page — pixel-perfect rulers, element inspection, responsive previews, and overflow detection in one lightweight extension.

Growth

WindowUsersChangeRatingsRating
7 days−1−20.0%00.00
30 days−4−50.0%00.00
6 months−3−42.9%00.00

Version history

1 versions recorded
1.0.017 Feb 2026

Details

Category
Developer Tools
First seen
17 Feb 2026
Size
35 KB
Languages
en
Pricing
Free
Privacy policy
github.com
Support
github.com
Extension ID
jfikghnfcgimjpgjgkcajjajekamphbj

Permissions and risk

Moderate riskimpact 2, likelihood 2
Permissions
activeTabstoragescripting

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