Regex Match Lab

Is your regular expression matching the right text? See the result, test the exceptions and keep your work for the next change. Regex Match Lab is an offline workbench for ICU regular expressions. Check emails, logs, dates and your own text before reusing a pattern. Included features • Run match · Highlighted source · Match map • Captures · Range • Replacement preview An empty template deletes matched text. • Test cases: Should match / Should not match • Saved tests: Pattern · Options · Test cases • Back up saved tests / Restore from JSON Each test is added as a new copy. Your saved tests stay unchanged. • Copy matches / Copy replacement · Share results • Ignore case · ^ and $ match each line · . matches new lines Privacy Processing and saved tests stay on your device. No app account or server requests. Exported files and shared results go only where you choose to send them. Supported devices iPhone · iPad · Mac (Mac Catalyst) Mac: ⌘N New test · ⌘O Saved tests · ⌘S Save · ⌘R Run match Getting started 1. Load example → Pattern + Sample 2. Options → Run match 3. Test cases → Save → Copy matches / Copy replacement / Share results Notes Uses ICU/NSRegularExpression syntax, which differs from PCRE and JavaScript. Input limits and cooperative run limits apply; simplify the pattern if a limit is reached. JSON backups are manual files, not automatic sync. Support: https://paran.app/ Privacy policy: https://paran.app/privacy-policy/