# Sydney (Bing Chat) for Firefox

> Enable Sydney (a.k.a. Bing Chat) in Firefox, and default to using Bing Chat rather than Bing Search 🪄 Built by @lucasjohnston (https://twitter.com/lucasjohnston)

Canonical page: [https://chrome-stats.com/d/sydney-for-firefox](https://chrome-stats.com/d/sydney-for-firefox)

## Overview

- **ID:** `sydney-for-firefox`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Removed
- **Publisher:** sydney for firefox
- **Daily users:** 13
- **Rating:** 3.67 / 5 (3 ratings)
- **Version:** 1.0
- **Last updated:** 2023-02-17
- **First published:** 2023-02-16
- **Size:** 465 KB
- **Data as of:** 2026-02-20
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/sydney-for-firefox/)
- **Website:** [https://lettermark.co.uk](https://lettermark.co.uk/)

## Description

Sydney (Bing Chat) for Firefox is a Firefox add-on that enables Sydney (a.k.a. Bing Chat) as the default search option instead of Bing Search.

## Permissions and access

### Permissions

- `webRequest`
- `webRequestBlocking`
- `https://www.bing.com/*`

### Content script matches

- `www.bing.com`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Request access to the following domains: bing.com
- This extension is not longer available in the store

> 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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- [Bing for Firefox](https://chrome-stats.com/d/bing-for-firefox) — 5 users, 5.00 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/sydney-for-firefox)