# CO₂ flight comparison

> Travel more sustainable and choose the flight with the lowest CO₂ emissions.

Canonical page: [https://chrome-stats.com/d/co-flight-comparison](https://chrome-stats.com/d/co-flight-comparison)

## Overview

- **ID:** `co-flight-comparison`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** bauerj
- **Category:** search-tools,appearance
- **Version:** 0.1
- **Last updated:** 2020-03-19
- **First published:** 2020-03-18
- **Size:** 27 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/co-flight-comparison/)
- **Website:** [https://github.com/bauerj/flightsearch-co2/issues/new](https://github.com/bauerj/flightsearch-co2/issues/new)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/co-flight-comparison/privacy/](https://addons.mozilla.org/firefox/addon/co-flight-comparison/privacy/)

## Description

CO₂ Flight Comparison is a Firefox add-on that integrates information about the CO₂ emissions of each flight into Google™ flight search. It helps you make sustainable travel choices by showing the flights with the lowest CO₂ emissions.

## Rankings

- #148,320 — Overall
- #58 — sustainable

## Permissions and access

### Permissions

- `storage`
- `https://co2offset.atmosfair.de/api/*`
- `https://api.atmosfair.de/api/*`

### Content script matches

- `www.google.com`

## Safety

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

### Analysis details

- Request access to the following domains: atmosfair.de, google.com
- 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/co-flight-comparison)