ZeroWidth Detection

ZeroWidth Detection

Checks websites that you visit for invisible zero-width characters and replaces them with a specified character. Has the ability to copy all the characters found.

What is ZeroWidth Detection?
ZeroWidth Detection is a Firefox add-on that helps you detect and replace invisible zero-width characters used for online tracking. It allows you to manually scan pages, copy detected characters, and specify custom replacements. Whitelist trusted domains and check copied text for zero-width characters. Visit GitHub to contribute or access the source code.
Merlin
Stats
By: Mikkel D.
Users: 37 ▼ -2
Rating: 5.00 (2)
Version: 2.1resigned1 (Last updated: 2024-04-25)
Creation date: 2018-07-08
Weekly download count: NaN
Firefox on Android: Yes
Risk impact: High risk impact
Risk likelihood: Moderate risk likelihood
Manifest version: 2
Permissions:
  • <all_urls>
  • tabs
  • storage
  • webRequest
  • clipboardRead
  • clipboardWrite
Size: 18.02K
URLs: Website
Stats date:

Other platforms

Not available on Chrome
Not available on Edge
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Merlin
Summary

Simple functionality focused add-on used for detecting zero-width characters (invisible characters) which might be used for tracking you online.

Functions:

  • Manually preform a scan on a page
  • Copy all zero-width characters found
  • Specify custom string to replace zero-width characters found (can input nothing to strip them)
  • Whitelist domains you trust or that might break from the add-on
  • Option for checking any copied text for zero-width characters
  • Option to scan a page again when tab becomes active

Want to contribute to the project or just see the source code and how it works? You can do both on GitHub: https://github.com/mikkel1156/ZeroWidth-Detection-Firefox

User reviews
by atreyu, 2020-08-11

Interesting add-on, demonstrates one of the trickster's tools! (Unfortunately not working on all sites because of counter measures) https://umpox.github.io/zero-width-detection/
by tplaccnt, 2018-07-08
View all user reviews
Safety
Risk impact

ZeroWidth Detection is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install ZeroWidth Detection if you trust the publisher.

Risk likelihood

ZeroWidth Detection is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

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Screenshots