Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of Script Traffic Light

Script Traffic Light by Santiago

Minimal traffic-light control for network scripts: block all, block third-party only, or allow all — with a global default and per-site overrides.

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

About this extension
Script Traffic Light is a small privacy-oriented extension that controls whether websites can load network scripts.

Two controls in the popup:
• Default — applies to all sites
• This site — override for the current website (or inherit the default)

Modes:
• Red — block all network scripts
• Yellow — block external (third-party) scripts only
• Green — allow all scripts
• Gray (this site only) — use the default

How it works:
• Uses Manifest V3 and the declarativeNetRequest (DNR) API
• Only affects network script requests (not inline scripts or eval)
• Settings are stored locally in the browser (storage.local)
• No accounts, no analytics, no remote servers, no telemetry

Hostnames are normalized by stripping a leading "www." so www.example.com and example.com share the same site setting. Changing a mode saves immediately and reloads the current tab so the new policy applies.

This extension is intentionally minimal: no filter lists, no cloud sync, no tracking.
Rated 0 by 0 reviewers
Sign in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Block content on any page
  • Access browser tabs

Optional permissions:

  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Support site
  • Copy add-on ID
Version
0.1.3
Size
12.72 KB
Last updated
7 days ago (Jul 9, 2026)
Related Categories
  • Privacy & Security
License
The Unlicense
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla’s homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Download

  • Download Firefox
  • Windows
  • macOS
  • iOS
  • Android
  • Linux
  • All

Latest Builds

  • Nightly
  • Beta

Firefox for Business

  • Enterprise

Community

  • Connect
  • Contribute
  • Developer

Follow

  • Instagram
  • YouTube
  • TikTok
  • Bluesky
  • Podcast
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.