HTML Tag Regex Tester

Test and validate html patterns with this specialized regex tester. Includes tested patterns and real-time matching.

Recommended Html Pattern

``regex <([a-z]+)([^>]*)>.*?`

`Test Examples`

Valid matches:

content

Hello

text


Invalid (should not match):

no closing

plain text


Pattern Explanation
Matches paired HTML tags with optional attributes (basic matching)
Alternative Patterns

1. <[^>]+>2.<(\w+)[^>]*>.*?`

How to Use

1. The pattern above is preloaded—or enter your own 2. Add test strings to validate 3. See real-time match highlights 4. Copy the pattern for your code

Regex Quick Reference

| Symbol | Meaning | Example | \dAny digit\d{3} matches "123" \wWord character\w+ matches "hello" +One or morea+ matches "aaa" *Zero or morea* matches "" or "aaa" ?Optionalcolou?r matches "color" ^Start of string^Hello $End of stringworld$ [abc]Character class[aeiou] matches vowels (ab)Alternation(catdog) matches either

Frequently Asked Questions

Should I use regex to parse HTML?

For simple extraction, regex can work. For complex parsing, use a proper HTML parser like DOMParser or cheerio. Regex can't handle all valid HTML.

What regex flavor does this use?

This tester uses JavaScript regex (ECMAScript). Most patterns work the same in Python, Java, and other languages.

HTML Tag Regex Tester