# Analytics Automatic Opt-Out

> Injects code into all websites to opt you out of various analytics services, via setting localstorage variables and attempting to call sdk functions provided by analytics scripts in web pages. Currently works for Plausible, umami, posthog, and fathom

Canonical page: [https://chrome-stats.com/d/analytics-automatic-opt-out](https://chrome-stats.com/d/analytics-automatic-opt-out)

## Overview

- **ID:** `analytics-automatic-opt-out`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** ttools
- **Category:** web-development,privacy-security
- **Daily users:** 8
- **Version:** 1.1
- **Last updated:** 2024-04-09
- **First published:** 2024-04-08
- **Size:** 9.55 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/analytics-automatic-opt-out/)

## Description

Injects code into all websites to manually opt you out of various analytics services (Currently: umami, plausible, posthog, fathom). These analytics services provide a way to opt out so the website developers/administrators don't get tracked themselves and mess up the analytics data. This extension injects this code into all webpages automatically, so you can avoid being tracked for privacy reasons, or so you can avoid messing up the data of your own website, without having to manually perform the opt out on every website you run. 

Feel free to disable this extension once you visit all the websites you want to opt out of, provided that service remembers your opt out (like if it works by setting a localstorage value and you don't regularly clear your localstorage)

Feel free to email me with any suggestions or out of date opt-out code (you can see any extension's code with crx viewer btw).

## Rankings

- #37,128 — Overall
- #28 — analytics
- #29 — web analytics
- #114 — automation
- #151 — automate
- #238 — analysis

## Permissions and access

### Permissions

- `cookies`
- `activeTab`
- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

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- [Plausible Shield](https://chrome-stats.com/d/plausible-shield) — 4 users
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Source: [Chrome-Stats](https://chrome-stats.com/d/analytics-automatic-opt-out)