Who is this tool for?
It is useful for anyone who needs to validate text without writing a regular expression from scratch.
Developer
Regex Tool
Generate, edit and test regular expressions for emails, URLs, IP addresses, UUIDs, numbers and common validation patterns.
Tool
Regex Tool
Generate, edit and test regular expressions for emails, URLs, IP addresses, UUIDs, numbers and common validation patterns.
This tool runs in your browser. Your input is processed locally and is not uploaded.
About this Tool
Use this free regex tool to choose a common validation preset, see what it checks, test your own text and copy the final regular expression. Each preset includes a plain-language description plus valid and invalid examples.
Examples
- Email Address
- IPv4 Address
- UUID
Frequently Asked Questions
Can I edit the regex pattern?
Yes. Presets fill the pattern automatically, and you can edit the regex or enter your own custom pattern.
Does it replace the regex tester?
Yes. The tester is integrated, so the same page shows whether your test text matches the selected pattern.
Related Tools
Regex Explainer
Break down and explain regular expressions in plain language.
TOOLUser Agent Parser
Analyze user agent strings and extract browser and device information.
TOOLHTTP Header Parser
Parse and inspect HTTP headers from requests and responses.
TOOLJSONPath Tester
Evaluate JSONPath queries against JSON data.
TOOLXPath Tester
Evaluate XPath queries against XML documents.
TOOLEnvironment Variable Parser
Parse and analyze environment variable files.
TOOL