Regex Tester for Chrome
Test JavaScript regular expressions with live match highlighting, capture groups, flags, and common pattern presets.
Replaces:
Regex TesterRegExr Tab
Why Developers Switch to OmniDev
Installing a separate browser extension just for regex tester bloats Chrome memory, adds permission risk, and clutters your toolbar. OmniDev integrates Regex Tester natively alongside 53 other frontend and QA tools.
Test JavaScript regular expressions with live match highlighting, capture groups, flags, and common pattern presets.
Runs inside an isolated Shadow DOM panel so host page styles never break or leak
Zero background RAM overhead when idle — lazy-loaded on demand in milliseconds
Replaces standalone Regex Tester, RegExr Tab extensions inside a single 54-in-1 toolkit
Shadow-DOM isolated • Zero host-page CSS leakage
STEP 01
Install OmniDev from the Chrome Web Store and open the popup or press your custom shortcut.
STEP 02
Select "Regex Tester" under the Utilities category (or search "Regex Tester" in the launcher).
STEP 03
Inspect, capture, or export results directly on the live page — 100% locally in your browser.
See How OmniDev Compares
Detailed side-by-side comparisons against standalone Chrome extensions:
Frequently Asked Questions — Regex Tester
Is the Regex Tester tool in OmniDev completely free?
Yes. Regex Tester and all 54 tools in OmniDev are 100% free to use with no account signup or paywall.
Does Regex Tester send my webpage data to an external server?
No. Regex Tester runs locally inside your browser tab. OmniDev is architected local-first and never uploads your DOM, storage, or network payloads to a Jambo backend.
Which standalone Chrome extensions does Regex Tester replace?
Regex Tester replaces single-purpose extensions such as Regex Tester, RegExr Tab, saving browser RAM and reducing extension permission sprawl.
More Utilities Tools in OmniDev
Every tool below is included in the same single Chrome extension install.
Explore All 54 Tools
Text Edit Mode
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Asset Explorer (Asset Spy)
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Tailwind Converter
Click any element on any website to convert its computed CSS styles into clean Tailwind CSS utility classes.
Data Scraper
Point-and-click visual DOM scraper to extract repeating lists, tables, and structured data into CSV or JSON.
Viewport Switcher
Resizes the actual browser window to exact mobile, tablet, and desktop presets and restores your original window size in one click.
Dark Mode Toggle
Force toggle dark, light, dim, or sepia color schemes and `prefers-color-scheme` themes on any website.
Get Regex Tester + 53 More Tools in 1 Click
Stop cluttering Chrome with dozens of single-purpose extensions. Install OmniDev free and run everything locally.
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