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

Sever by Supun Hewagamage

Sever is a privacy-first blocker that stops ads, trackers, and nuisance UI using a fast local Rust/WASM engine, delivering cleaner browsing without sending user data anywhere.

Available on Firefox for Android™Available on Firefox for Android™
5 (1 review)5 (1 review)
Download Firefox and get the extension
Download file

Extension Metadata

About this extension
Sever is a privacy-first blocker that uses a Rust-powered WASM engine to stop ads, trackers, and unwanted page elements before they load. It runs entirely locally for faster browsing, stronger privacy, and fine-grained control without sending user data anywhere.
Rated 5 by 1 reviewer
Log in to rate this extension
There are no ratings yet

Star rating saved

5
1
4
0
3
0
2
0
1
0
Read 1 review
Permissions and data

Required permissions:

  • Access browser tabs
  • 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
  • Homepage
  • Support site
  • Support Email
  • Copy add-on ID
Version
0.2.1
Size
911.69 KB
Last updated
3 hours ago (May 18, 2026)
Related Categories
  • Privacy & Security
License
LICENSE
Privacy Policy
Read the privacy policy for this add-on
Version History
  • See all versions
Tags
  • ad blocker
  • privacy
  • security
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

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • 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. Android is a trademark of Google LLC.