regexdevpower

Regex tester

Regex tester with match table + replace preview (runs in a worker).

Regex Power Tools

Presets, history, and batch runs are enabled (offline, stored locally).

PresetsHistoryBatchWorkers

Inputs

Pattern

Flags

Max matches

Replacement (supports $1, $&, $<name>)

Text

Matches

(no matches yet)

Replace preview

Output of text.replace(re, replacement)

(no preview yet)

Explanation

Try a regex against sample text without risking runaway browser freezes. ToolPocket applies timeouts and match limits.

Use it when you need a fast, offline conversion/validation step during development or debugging.

Pro: Power mode adds replace preview + groups table (no paywall yet).