What is Regular expression?

A regular expression is a pattern describing a set of strings, used to search, validate and replace text. Flavours differ between languages in syntax and supported features.

5 tools that work with Regular expression

Files never leave your browser.

Text Tools3

Email, URL & Number ExtractorPull emails, URLs, IP addresses, phone numbers or hashtags out of any text.Find and Replace TextReplace text across a whole document with plain matching or full regular expressions.String Escaper & UnescaperEscape strings for JSON, JavaScript, CSV, SQL, XML or shell — and unescape them again.

Developer Tools2

Regex ExplainerBreak a regular expression into tokens and explain each one in plain English.Regex TesterTest regular expressions against sample text and see every match with its capture groups.

Related terms

Terms that appear alongside Regular expression on the same tools.

← All glossary terms Browse every tool →