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Evaluate web accessibility within your browser.
Users
600K
Rating
4.1
Reviews
159
7D Growth
-100K|-14.3%
Stable signalNo paid features detectedMedium-risk permissions
Protractor
Easily measure angles in your browser window.
Users70KCurrent public install base
Rating4.2Store average score
Reviews107Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview
2 assetsProtractor Media preview
Trend
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User Growth Over Time
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7-day rating change
Start
4.19
Latest
4.19
7-day rating change
0.00
2026年7月15日2026年7月21日
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1-day growthFlat
00%7-day growthFlat
00%30-day growthDeclining
-20K-22.2%Technical snapshot
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Version4.0.1
ManifestV3
Size74.37KiB
Languages1English
Published
Store updated
Last crawled
English
Overview
Product summary
Review the store description, core capabilities, and common use cases.
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/
Reviews
Recent review snapshot
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Store average score4.2Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.2Average computed only from synced review bodies below
Reviews with text84Synced review bodies
Total ratings / reviews107Chrome Web Store public rating/review count
Store average score: 4.2. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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this is so useful and i think it is perfect
This extension is great! I would suggest to make "clockwise" rotation AND 0 degree at the North to make measurement of North bearing much easier. Thanks to the option page, I can customize that by my own. But I would suggest to make it a default option to save everybody's time.
This is the worst protractor app ever, I might as well go and buy a real one.
Pretty great!
I love it but I have no idea how to change colours can someone help pls?
It's not moving, any ideas?
thanks for this helped a ton with geometry homework
It hard to use
it worked at first but now when i click n the little icon it won't open
Simple and eeasy for when you need an angle, but dont have a protractor... and its free!