RegX

A lightweight and speedy regular expression tool that focuses on user experience and highlights replacements.

As of May 2026, RegX has 405 users and a 4.64/5 rating from 14 reviews in the Developer Tools category.

Usersdown 14.0 percent14.0%
405
405
Ratingno change0%
4.64
14 reviews
Reviewsno change0%
14
Version
0.2.1
Manifest V2

History

2 snapshots

Tracking since Apr 24, 2026.

476.28438399.72Apr 24, 2026May 19, 2026
View as table
DateUsersRatingReviewsVersion
Apr 24, 20264714.64140.2.1
May 19, 20264364.64140.2.1
Now4054.64140.2.1

Permissions & access

Permissions
None declared
Host access
None declared

Screenshots

RegX screenshot 1

About

RegX is a regular expression tool that provides a great way to do search and replace on a block of text. The actual regex operation is performed in a separate thread using an HTML5 worker so that the app never freezes or slows down even on complicated expressions or long blocks of text.

Features:
 - Replaced matches are highlighted in the output.
 - By pressing the execute button or hitting the enter key, the current output will be moved to the input box.
 - The input and output boxes scroll together so that they can be more easily compared side-by-side.

Still to come:
 - Provide flags for things such as case insensitive searches.
 - Improve the input/output comparison so that it better compares lines.
 - Highlight matches
 - Save search/replace patterns for re-use

Changelog:
 - v0.1.0
 - - Initial Release
 - v0.2.0
 - - The regex can't be executed while the background process is running or if there's an error. The Execute button will gray out to signify this.
 - v0.2.1
 - - Updated the manifest to v2
 - - Fixed the way escape sequences are done in the replacement so \\n should render now as \n rather than as a slash followed by a line break.

Technical

Version
0.2.1
Manifest
V2
Size
52.02KiB
Min Chrome
Languages
1
Featured
No

Metadata

ID
ljalefclkclbejlnejeagbpebmheejml
Developer ID
u77757d0a2bb5757609335caeab349f27
Developer Email
[email protected]
Created
Jan 2, 2012
Last Updated (Store)
Jan 9, 2013
Last Scraped
May 19, 2026
Website
Support URL
Privacy Policy

Similar extensions

Alternatives to RegX, ranked by description similarity.

Data sourced from the Chrome Web Store · last verified May 19, 2026.