How to Change the Default Search Engine in Firefox
Firefox is one of the few mainstream browsers that gives users genuine control over their default search engine — not just a curated shortlist, but the ability to add virtually any search engine you use regularly. Whether you want to swap Google for DuckDuckGo, switch to Bing, or set a niche search tool as your default, the process is straightforward once you know where to look.
What "Default Search Engine" Actually Means in Firefox
When you type a query directly into Firefox's address bar (also called the Awesome Bar) and hit Enter, Firefox sends that query to your default search engine. The same applies when you highlight text on a page and choose "Search" from the right-click context menu.
Changing the default doesn't remove other search engines — it just determines which one Firefox uses automatically. You can still access other engines manually by typing their keyword shortcut in the address bar (more on that below).
How to Change the Default Search Engine in Firefox 🔍
On Desktop (Windows, macOS, Linux)
- Open Firefox and click the hamburger menu (three horizontal lines) in the top-right corner.
- Select Settings.
- In the left sidebar, click Search.
- Under the Default Search Engine section, open the dropdown menu.
- Select the search engine you want as your default.
- The change takes effect immediately — no restart needed.
That's the core process. If the search engine you want isn't listed in the dropdown, you'll need to add it first (covered below).
On Android
- Tap the three-dot menu in the top-right corner of Firefox.
- Go to Settings.
- Tap Search.
- Tap Default search engine.
- Choose from the available options.
On iOS (iPhone/iPad)
- Tap the three-line menu at the bottom of the screen.
- Go to Settings.
- Tap Search.
- Tap Default Search Engine.
- Select your preferred option.
Firefox for iOS offers a slightly more limited selection of built-in engines compared to the desktop version, which reflects how Apple's ecosystem handles browser customization differently than open platforms.
Adding a Search Engine That Isn't Listed
Firefox desktop allows you to add search engines beyond the default list. There are two main ways to do this:
Via a website's built-in OpenSearch support: Many websites (including many search engines and databases) support the OpenSearch standard. When you visit one of these sites and perform a search, Firefox may detect it automatically. You can then go to Settings → Search → Search Shortcuts and look for an "Add" option for recently visited search-capable sites.
Via Firefox Add-ons: The Firefox Add-ons library includes extensions that add specific search engines directly to your search engine list. Once installed, those engines appear in your dropdown and can be set as default.
Manually via the address bar: On some sites, right-clicking the address bar or search field on the page may give you an option to "Add [Site] as a Search Engine." This varies by site and Firefox version.
Search Engine Shortcuts: A Useful Detail
Even after you set a default, Firefox lets you assign keyword shortcuts to other engines. For example, you could type @bing followed by your query in the address bar to search Bing without changing your default. These shortcuts are configured under Settings → Search → Search Shortcuts.
This matters because your choice of default search engine doesn't have to be all-or-nothing. Power users often keep a general-purpose default while using shortcuts for specialized searches (shopping, code documentation, maps, etc.).
Factors That Affect Which Default Engine Works Best for You
The "right" default search engine isn't universal — several variables shape what actually works well for a given person:
| Variable | Why It Matters |
|---|---|
| Privacy preferences | Some engines collect and retain search data; others are explicitly no-log |
| Region | Search quality and local results vary significantly by country |
| Primary use case | Academic research, shopping, coding, and news discovery benefit from different engines |
| Language | Some engines perform better in non-English languages |
| Mobile vs. desktop usage | Engine interfaces and mobile experience quality differ |
| AI-assisted results | Some engines now integrate AI summaries; others return purely ranked links |
There's also a technical skill dimension. Users comfortable with browser extensions and OpenSearch have access to a much wider pool of engines than users relying solely on the built-in list. Desktop Firefox users have significantly more flexibility here than mobile Firefox users, where the available engine list is more restricted by platform constraints.
What Stays the Same After Changing Your Default
Changing your default search engine in Firefox does not affect:
- Your bookmarks, history, or saved passwords
- Search engines used by other browsers on your device
- The search engine used inside individual websites (e.g., YouTube's own search bar always searches YouTube)
- Firefox Sync settings on other devices, unless you've enabled syncing for preferences
Each device running Firefox maintains its own default search engine setting unless you've specifically configured Firefox Sync to share settings across devices — and even then, sync behavior for search settings can vary.
The Part Only You Can Answer
Firefox's search settings are genuinely flexible, but that flexibility means the "best" configuration depends entirely on what you're optimizing for. A researcher who values source diversity needs something different from someone prioritizing privacy, speed, or local results. The steps above will get you to the right settings panel — what you do once you're there depends on what you actually need from your searches. 🎯