WAVE Evaluation Tool
Accessibility
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
User growth trend
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User Growth Over Time
Rating trend
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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
Growth overview
Daily, weekly, and monthly growth
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1-day growthFlat
00%7-day growthFlat
00%30-day growthDeclining
-20K-22.2%Technical snapshot
Version, languages, and crawl freshness
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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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I don't know how to get it to work :(
It works great for what it is. Nothing much else to say. However, here's a suggestion: Allow the protractor to be moved via arrow keys, it would allow for more precise positioning of it.
Awesome worked fine on a .pdf file
Perfect for me. Works just fine with Google maps. I'm using it to find out the wind direction at any given windsurfing spot.
this is awesome! i was doing my geo homework on like and this made my life so much easier! keep up the good work.
This extension works really well, and prevents me from having to get out a physical protractor to place on my screen. Awesome.
Very nice tool. it does what I need.
Nice extension, works well. I usually do measures on map, where 0 is north. So will be nice to add offset angle for 0 in configuration page for freaks like me :-)
Perfect for what i needed
Great little extension, perfect for measuring angles in your browser.