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A regex tester lets you write a regular expression, drop in a block of sample text, and immediately see what matches, where it matches, and what each capture group contains. EasyRead uses the browser's JavaScript regex engine, supports the i, g, m, s, u, and y flags, and highlights hits inline so you can iterate on the pattern without leaving the page. Everything runs locally — nothing about your patterns or samples is uploaded.
Iterate quickly on a regex while watching matches light up in real time, instead of re-running tests in your editor.
Pull emails, URLs, IDs, or log fields out of a free-form document using capture groups and a single paste-in.
Verify that a regex intended for form validation — phone numbers, slugs, SKUs — handles edge cases before shipping it.
Drop a confusing regex someone else wrote into the tester and map each group back to what it captures.
The JavaScript/ECMAScript flavor via the native RegExp engine. PCRE-only features like lookbehind with variable width or possessive quantifiers are not available.
Case-insensitive (i), global (g), multiline (m), dotAll (s), unicode (u), and sticky (y). Toggle them on the input to see how behavior changes.
Yes. Each match lists its full match plus every numbered and named capture group with its index and value.
The engine runs in your browser, so a runaway pattern can freeze the tab briefly. If input plus pattern hangs, simplify the regex — that is a bug in the pattern, not the tool.
Once the page is loaded, yes. Matching happens purely client-side, so you can keep testing without a network connection.