# Estimate compression level

> A Firefox browser extension that estimates the HTTP compression level of the page.

Canonical page: [https://chrome-stats.com/d/estimate-compression-level](https://chrome-stats.com/d/estimate-compression-level)

## Overview

- **ID:** `estimate-compression-level`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Leon Brocard
- **Category:** web-development
- **Version:** 0.0.2
- **Last updated:** 2022-03-19
- **First published:** 2022-03-18
- **Size:** 104 KB
- **Data as of:** 2026-09-14
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/estimate-compression-level/)
- **Website:** [https://github.com/fastly/chrome-extension-estimate-compression-level](https://github.com/fastly/chrome-extension-estimate-compression-level)

## Description

Estimate Compression Level is a Firefox browser extension that allows you to estimate the HTTP compression level of the page you are browsing. It provides valuable information about the compression efficiency and helps optimize transfer speed and bandwidth utilization.

## Rankings

- #133,137 — Overall

## Permissions and access

### Permissions

- `http://*/*`
- `https://*/*`
- `webRequest`
- `webNavigation`

## Safety

- **Risk impact:** High 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).

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Source: [Chrome-Stats](https://chrome-stats.com/d/estimate-compression-level)