One loop
RegexBench is a workspace-first lab: you land in a productive editor, not a marketing funnel.
Write a pattern, feed it sample text, and read the live token breakdown beside the matches.
Compose
The pattern field sits in a dark lab well with flavor chips and flag toggles in context.
Quick reference inserts tokens at the caret so you stay in flow.
Observe
Matches highlight in the test string as you type — no Run button.
Invalid patterns show a humanized error strip under the editor.
Understand
Explanation tokens describe each lexeme. Hover a token to underline its range in the pattern.
Match information lists indices and capture groups for every hit.