Protractor

Protractor

Easily measure angles in your browser window.

What is Protractor?
'Protractor' is a unique Chrome extension that transforms your browser into an accurate angle-measuring tool. It has flexible guides that can be moved around to perfectly match any vertex. It offers a range of customization options that help you tailor precision, units, colors, and more according to your preference. Features include the ability to resize, nudge, lock and rotate the protractor, providing highly accurate measurements. The code for 'Protractor' is open-source on Github, appealing to those interested in exploring or contributing to its development.
Stats
Users: 100,000+
Rating: 4.19 (98)
Version: 4.0.1 (Last updated: 2024-01-14)
Creation date: 2020-01-23
Risk impact: Very low risk impact
Risk likelihood: Moderate risk likelihood
Manifest version: 3
Permissions:
  • activeTab
  • storage
  • scripting
Size: 76.16K
URLs: Website
Stats date:

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Summary

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.

User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Simple and user-friendly interface
  • Accurate measurement with zoom and click-nudge features
  • No learning curve, easy to use
  • Customization options available
  • Helpful for online classes and various practical applications
Cons
  • Cannot change rotation from counterclockwise to clockwise
  • Difficult to see over some background colors; need for a black color option
  • Issues with visibility or functionality on some users' screens
  • Some users find it unusable or cannot open it
Most mentioned
  • Easy to use and efficient
  • Rotation direction (counterclockwise) is a problem for some
  • Desire for more features, such as display in mils or copying numbers/angles
  • Some issues with visibility over certain colors or backgrounds
  • Accuracy and usefulness in practical tasks, like measuring angles virtually
Recent reviews
Brilliant tool - would love it if it could also display mils (6400)!
by Adam Weinert Adam Weinert, 2024-03-05

Nice tool, thank you so much
by Brahim Oubbad Brahim Oubbad, 2024-02-26

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!
by William J. Stockich William J. Stockich, 2024-01-20
View all user reviews
Safety
Risk impact

Protractor is safe to use. It does not request any sensitive permissions.

Risk likelihood

Protractor is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this extension.

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Screenshots
Promo images
Protractor small promo image
Small promo image
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