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 percent−14.0%
405
405
Ratingno change0%
4.64
14 reviews
Reviewsno change0%
14
Version
0.2.1
Manifest V2
History
2 snapshotsTracking since Apr 24, 2026.
View as table
| Date | Users | Rating | Reviews | Version |
|---|---|---|---|---|
| Apr 24, 2026 | 471 | 4.64 | 14 | 0.2.1 |
| May 19, 2026 | 436 | 4.64 | 14 | 0.2.1 |
| Now | 405 | 4.64 | 14 | 0.2.1 |
Permissions & access
- Permissions
- None declared
- Host access
- None declared
Screenshots
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.
Regex Search v0.2
Search page content using JS RegExps
2
Regex Replace
A regex engine to handle basic regular expressions on all viewed pages.
1.0K
★ 4.2
RegExr
Create & Test Regular Expressions.
1.0K
★ 4.8
Regex Tester Pro
Test, debug and master regex in your browser. AI-powered generation, multi-flavor support, and real-time match highlighting.
39
★ 4.8
Regex finder
Regex finder based on CSS Custom Highlight API. Type a valid regex in the search field to highlight matches on the page.
93
Regexo (Regular Expression Tester)
Regexo is an offline chrome application that allows developers to develop and test regular expressions.
144
★ 3.9
Regular Expression Tester
Use Regular Expression Tester as a regex validator to check regex patterns and for online regular expression matching on web pages.
85
★ 4.8
Quick Text Replacer Pro
Beautiful text replacement tool - Select, edit, and replace text instantly with style.
1
Data sourced from the Chrome Web Store · last verified May 19, 2026.