Custom Search Engine Firefox

Custom Search Engine

By: Ravi
To use, type 'ms' plus keyword for custom search engines & search term separated by spaces into the url bar. (e.g. ms google searchtext). Also search using multiple search engines in one go (e.g. ms key1,key2,key3 <search text="">).

Features & Capabilities

Description This add-on allows users to define their own custom search engines and use it from address bar of the browser. You can save the custom engine details to a file and also load it from there. It allows easy sharing of custom defined engines too.

Summary of Features

  • Search using single search engine (use search key as 'key1')
  • Search using multiple search engine (use search key as 'key1,key2')
  • Search using single search category (use search key as '@cat1'
  • Search using multiple search category (use search key as '@cat1,cat2')
  • Search using all search engines (use search key as '@')
  • Search using search engines with empty category (use search key as '@@')
  • Search using multiple search tags "{searchTerms[0]}", "{searchTerms[1]}" etc (supported till "{searchTerms[9]}")
You can search using multiple search engines in one go. To use multi-search feature type "ms key1,key2,key3 <search text="">".

It allows users to use multiple search tags ("{searchTerms}" or "{searchTerms[0]", "{searchTerms[1]" etc) to define a search engine url.

E.g. Following are a valid custom search engine urls -

Recent new feature added to search based on search engine category. Search engine category should be defined in the preferences page.

To search based on category please type "ms @<category> <search text="">".

If you want to search using all search engines then simply use "ms @ <search text="">".

Few other examples:

  • ms @food,restaurant pasta This will start search for text 'pasta' with search engines under category 'food' and also with search engines under category 'restaurant'.
  • ms @ pasta This will start search for text 'pasta' with all the search engines defined under preferences.
  • ms @@ pasta This will start search for text 'pasta' with all search engines with empty category.
Add-on Preferences Please follow below steps to update add-on preferences -
  1. Go to "about:addons" from Firefox address bar
  2. Click on "Preferences" for "Custom Search Engine" add-on.
  3. Click on "Load Popular Search Engines". This will load few of the popular search engines details (e.g. duckduckgo, yahoo, google, bing).
  4. Click on "Save Preferences"
Use above steps to also add your own custom engine details.

Permissions Required:

Notes:
  • If search engine key typed in address bar (after typing ms) points to single custom engine key then no need to type full key for custom search engine.

    E.g. If "g" points to single custom engine lets say google then following will have same result- ms google searchkey ms g searchkey

User Growth & Download Statistics

Manifest V2 Add-on
By:
Ravi
Daily users:
219
Rating:
4.11
(36)
Version:
1.7resigned1 Last updated: 2024-04-25
Version code:
5729439
Creation date:
2017-11-29
Risk:
Low risk impact Low risk likelihood
Permissions:
  • https://raw.githubusercontent.com/rsins/ravi-firefox-custom-search-engines/master/SampleCustomEngines/PopularSearchEngines.txt
  • storage
Size:
67.33KB
Email:
ra*****@gmail.com
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-17
Compare stats and ranking:

Other platforms

Chrome
Custom Search Engine (v1.7)
3,000 3.82 (11)

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Ravi
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/custom-search-engine/
Email:
ra*****@gmail.com

User Reviews

by Ma*****, 2026-06-02

by 退出*****, 2025-04-06

by 远离*****, 2025-02-24
View all user reviews ›

Is Custom Search Engine Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Custom Search Engine requires very minimum permissions.

Risk impact analysis details
  • High Request access to the following domains: githubusercontent.com
  • Low ****** ***** ** ******* ****** ********** **** ** ** ******** ******* ** **** ***** *************
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Custom Search Engine has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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