Protractor icon

Protractor

by ben.burlingham · Tools
Manifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

Easily measure angles in your browser window.

Users
100K
0 in 30 days
Rating
4.3 / 5
+0.10 in 30 days
Ratings
107
−1 in 30 days
Store rank
#2,011
#1,767 among extensions
Version
4.0.1
updated 1 Jun 2025

Users

monthly, 3 years
20K60K100KAug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 100,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
3069108Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 107 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 Protractor

Move the two guides around to accurately match any vertex. Customize precision, units, colors, and more. The protractor can be easily resized, nudged, locked, and rotated. Code is open source on Github. Also on Firefox: https://addons.mozilla.org/en-US/firefox/addon/protractor/

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%0+0.09
30 days0+0.0%−1+0.10
6 months0+0.0%0+0.10
1 year0+0.0%+1+0.08

Chrome Web Store search rankings

Where Protractor appears when people search the store, with the 30 day change
Search phrasePosition30 days
firefox#65+9

Version history

6 versions recorded
4.0.114 Jan 2024
4.0.029 Dec 2023
3.1.217 Aug 2020
3.1.115 Aug 2020
3.1.019 Jul 2020
3.0.123 Jan 2020

Details

Category
Tools
First seen
23 Jan 2020
Size
74 KB
Languages
en
Pricing
Free
Extension ID
kpjldaeddnfokhmgdlmpdlecmobaonnj

Permissions and risk

Minimal riskimpact 0, likelihood 1
Permissions
activeTabstoragescripting

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