Test JavaScript regular expressions with highlighted matches, groups and replace.
Anslation CoreRuns in your browser — nothing to install
anslation.one/apps/anslation-regex-lab
Anslation Regex Lab
Anslation Regex Lab on Web app — installable PWA — no store needed
Anslation Regex Lab
Anslation Regex Lab on Workspace — inside Anslation One
Anslation Regex Lab tests a JavaScript regular expression against your text. Matches are highlighted and listed with their positions and capture groups, numbered or named. Toggle the g, i, m, s, u and y flags, each explained in plain words, or start from presets such as email, date, Indian mobile number and IPv4 address. Preview a replacement that uses $1, $<name> and $&. Matching runs in the background and stops after 1.5 seconds, so a runaway pattern cannot freeze the page. Patterns you save, and your last pattern and text, stay in your browser.
Web App · For everyone · Developer Tools
Version 1.0.0
Oct 21, 2026
Regex Lab launched: live highlighted matches with groups, flag toggles, presets, replace preview, saved patterns and protection against runaway patterns.
Regex Lab launched: live highlighted matches with groups, flag toggles, presets, replace preview, saved patterns and protection against runaway patterns.
Oct 21, 2026
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Runs in your browser. What you enter stays on this device and is not used for tracking.
The creator declares no third-party tracking.
No data linked to your identity is declared.
This data may be collected but is not linked to your identity:
Privacy practices may vary, for example based on the features you use. Label checked Oct 21, 2026. Runs entirely in the browser; nothing you enter is uploaded.
Keep your saved patterns and your last pattern and text in this browser so it is there next time.
Web app
installable PWA — no store needed
Workspace
inside Anslation One
Plan: Free
1 permission requested. The install review lists them before anything is installed.
90
/ 100
Eligible
Sample listing: these checks run on seed data. No certification review has taken place.
Quality score
Passed
Security review
Needs evidence
Privacy label
Passed
Support route
Passed
Release ready
Passed
No runtime check has reported for this app yet.
Signals the listing carries; the passport has the evidence behind each one.
The sandbox opens Anslation Regex Lab with sample records. Nothing you do there reaches your workspace.
Anslation community · Jun 21, 2026
Community wants a reusable onboarding recipe with sample data and install-safe defaults.
Anslation community · Jun 21, 2026
Share rollout notes, integration tips, and requests for the next release.
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