Regex Search

Search or Highlight in HTML using Regular Expression (REGEX)

Regex Search Add-on for Firefox

Experience powerful searching and highlighting in HTML documents using Regular Expressions (REGEX) with the Regex Search add-on for Firefox. This tool allows you to tailor your searches to find exactly what you need by utilizing regex patterns. You can easily output search results with customizable templates and save your search profiles for quick access in the future. To get the most out of this plugin, a basic understanding of regular expressions is recommended.

Key Features:

  • Search and highlight HTML content using custom regular expressions.
  • Output search results with template customization.
  • Save and manage multiple search profiles for convenience.

Note: Some domains are blocked from using this add-on.

Manifest V2
By: Mohd_PH
Daily users: 1,996
-8
Rating: 3.15
(68)
Version: 1.0.17 (Last updated: 2019-07-13)
Version code: 4808790
Creation date: 2017-08-10
Weekly download count: 43
Firefox on Android: No
Permissions:
  • activeTab
  • storage
  • clipboardWrite
Size: 523.72K
URLs: Website
Full description: See detailed description
Updated: 18 hours ago

User reviews

Pros
  • Built-in regex cheat sheet is available
  • Better performance than other regex search extensions on large pages
  • Only requires one small permission (clipboard access)
Cons
  • Doesn't work well on complex pages with frames or iframes
  • UI is considered clunky by some users
  • No scrolling to results on the page
  • Freezes the browser if used excessively
Most mentioned
  • Doesn't work for various users
  • Performance on large pages
  • Clunky UI
  • Need for custom output options
These summaries are automatically generated weekly using AI based on recent user reviews. User reviews may be inaccurate, spammy, or outdated.
User reviews
does not find text perfectly visible on the page, even on a plaintext wikipedia page

by Micah Warren, 2025-03-04

by Seän Shepherd, 2025-02-19
View all user reviews

Add-on safety

Risk impact

Regex Search requires very minimum permissions.

Risk impact analysis details
  • High Allows reading and modifying clipboard content, which can be sensitive, posing a moderate privacy risk.
  • Low ******* ****** ** *** ********* ********
Risk likelihood

Regex Search 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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