Regex Tester

Test regex patterns against sample input and review highlighted matches in real time.

Input Section

Regex pattern

Sample text

Output Section

Live match preview

Alice and Bob built DevToolsHub in Blazor.

Regex matches

Match metadata

Does the tester update in real time?

Yes. Pattern and input changes trigger a debounced API test and a live highlighted preview.

How are matches shown?

Matches are wrapped visually in highlighted spans and listed with index and length metadata.