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
7-day 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
Review publication date, version, supported languages, and crawl timestamps.
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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Brilliant tool - would love it if it could also display mils (6400)!
Nice tool, thank you so much
For years and years I've searched for a tool that could measure angles. No learning curve here. Accuracy up to 4 decimal digits. Zero-angle (+ x-axis) rotatable to any angle. Click- nudge to get an angle vertex exactly over a point. Zoomable. There are other options and most are adjustable. Beyond imaginable! No improvements left for me except going outside the browsers!
just amazing bro
Simple to use and very effiency!! I really hint it to everyone.
The tool seems to be very helpful. However, the numbering system on my protractor is counterclockwise and I am unable to rectify the problem [90 is 270 and vice versa]. I've tried uninstalling and reinstalling multiple times and it appears to be the default. Please help!
very simple to use, if a little difficult to center exactly. but overall it helped a lot :)
It's been really helpful during my online classes
Fantastic UI design, not fiddly at all.
It is anti-clockwise. No setting to flip it. Useless.