01 / FEATURE
Live pattern matching
Edit a regex and see match highlights immediately, including syntax errors.
ARCHIVE / CREATIVE TOOL
DECODE THE PATTERN
REGEXLAB
Readable matches. Repeatable results.
A live regular-expression playground that highlights matches, captures groups, and previews replacements.
CASE FILE — 08
- STATUS
- LIVE
- YEAR
- 2026
- TYPE
- Creative Tool
ART DIRECTION / REGEXLABSTYLIZED CONCEPT MOCKUP
01
THE STARTING POINT
The idea behind it.
Make regular-expression testing more visual so patterns can be explored without mental guesswork.
THE CHALLENGE
Regex syntax is compact, but inspecting actual matches, captures and replacement results can feel opaque.
THE APPROACH
Run JavaScript RegExp patterns against editable sample text and expose each match in a highlighted inspector.
02
WHAT WENT INTO IT
Built with intention.
02 / FEATURE
Built-in patterns
Experiment with sample patterns for email addresses, hex colors, dates and URLs.
03 / FEATURE
Inspect captures
Review the matching substrings, ranges and captured groups.
04 / FEATURE
Try replacements
Preview replacement strings and read basic pattern hints.
03
STATE OF THE BUILD
Where it stands.
CURRENT STATUS / LIVE
REGEXLAB is a live browser utility with regex flags, built-in examples, a match inspector, replacement preview and lightweight pattern hints.
Regex syntax follows the browser's JavaScript RegExp engine; hints are not a full parser.
04
THE NEXT ITERATION
Never really finished.
01
More comprehensive pattern explanations
02
Shareable test examples
03
Improve large-input performance