Regex Tester Pro icon

Regex Tester Pro

Extension Actions

How to install Open in Chrome Web Store
CRX ID
laljckjnohfcbhmlehjkcppkdfibldad
Status
  • Live on Store
Description from extension meta

Test, debug and master regex in your browser. AI-powered generation, multi-flavor support, and real-time match highlighting.

Image from store
Regex Tester Pro
Description from store

Regex Tester Pro is a fast, feature-rich regular expression tester built directly into your browser. Write, test, debug, and refine regex patterns with instant real-time feedback — no need to leave Chrome.

KEY FEATURES:
• Real-time regex matching — see results instantly as you type
• Full syntax highlighting with color-coded match groups
• Capture group inspection — view all groups, named groups, and backreferences
• Built-in regex cheat sheet — quick reference for syntax, flags, and common patterns
• Save and organize your regex patterns for reuse
• Support for all JavaScript regex flags (g, i, m, s, u, y)
• Multi-line test input with match count and position indicators
• Replace mode — test regex find-and-replace operations
• Works completely offline — no data ever leaves your browser

Replaces the need to visit regex101 in a separate tab. No account required. No tracking. No ads.

Latest reviews

Nakshatra Nahar
Great Extensions The one of the most useful stuff found on internet
Asifur Rahman
Regex Tester Pro is the best because it works one hundred percent offline and no data ever leaves my browser while AI generates regex from plain English descriptions. This tool makes testing much easier with real time highlighting and capture group inspection right in the browser so I do not have to switch to another site. I really like the right click functionality for instant testing and the simple layout that makes the features easy to understand for everyone. While I would love even more control over the patterns this is a great tool that does exactly what I need and I highly recommend it to my friends.
Oliver K
thank you, the extension is really great!!
Arcus Fargin
this extension saves a lot of time when working with complex patterns. Highly recommended for developers who want accuracy and efficiency in regex testing!
Oyagi Akuma
This is the best; unlike other regex tools, regex tester pro works 100% offline, and no data ever leaves my browser. AI generates regex from plain English descriptions. You can also right-click any selected text to test it instantly. it also gives you a faster offline regex engine with real-time match highlighting and capture group inspection. It is clean i would love to recommend it to my friends
Yusuf Abdelfattah
I really like using it, it is a time saver
Sourav Vinodkumar
This tool is very helpful and makes testing regex much easier. I like that everything works right in the browser and I do not have to switch to another site. The real time highlighting is fast and the AI suggestions save a lot of time when I am stuck. The layout is simple and the features are easy to understand. It would be nice to have even more control over the patterns, but overall this is a great tool that does exactly what I need.
Waleria Stojanowska
I really like Regex Tester Pro. It’s fast, works offline, and makes testing regex much easier with real-time highlighting. The AI generator is handy, and checking capture groups is simple. Definitely useful for anyone who works with regex.
عبدالعليم اسماعيل
Good and time-saving
Edrian Jaron
Finding a better extension for this, but Regex tester got me the most and effective UI i've searching for. It doesn't looks complicated than the online what i'm using, so I'm keep using this thank you!!
Fargin tech
a fanatastic and copacetic extension
Contextly
I’ve tested several tools in this category, but this extension truly stands out for its superior UI. It’s incredibly intuitive and keeps the browsing experience clutter-free. A perfect choice for anyone looking to achieve a more seamless and efficient workflow. Highly recommended!
Lazar Antic
I’ve been using Regex Tester Pro — Test, Debug & Build Regular Expressions, and it’s made working with regex much easier. The interface is clear, and I can instantly see matches and errors while testing patterns. It really helps with debugging complex expressions and saves a lot of trial and error. Fast, practical, and very useful for developers.
Gimme Video
Tried it and love it, great tool for regex!
JonasJDS
Honestly this regex tester is so much better than the online ones I used to use. It works offline which is great for privacy and the match highlighting is super fast. The AI generator actually helps a lot when I am stuck on a complex pattern. It is a solid tool for any developer.
Siim Liimand
Very useful tool
SkillSet Nest
I use this one to test all the time and it is very handy. In my case I really need it on a daily basis so this one is just perfect.
Степан Медведев
good extension!
jamil ahmed
it does what it says
Orion Ventures
I've tried a few similar extensions, but this one has the best UI by far. Very intuitive and doesn't clutter my browser. Highly recommended for anyone looking to streamline their workflow.
小爱同学
I absolutely love Regex Tester Pro by Zovo! It’s fast, reliable, and makes testing regular expressions so much easier. The interface is intuitive, the results are clear, and it supports real-time input testing without lag. I use it daily for development and debugging, and it saves me a ton of time compared to other tools. Whether you’re a beginner or experienced developer, this extension is incredibly helpful and well worth installing! Highly recommended!