Free Regex Tester

Test regular expressions online with real-time match highlighting. No signup. No tracking.

Why Forge Regex vs Regex101? → · API docs · All APIs

Test & Match

Find & Replace

Split

Common Patterns

Regular Expression

i ignore case m multiline s dotall x verbose

Test String

Pattern Replacement Input Text

Split Pattern Input Text

Click any pattern to load it into the tester.

API Access

# Test a pattern
curl -X POST https://forge-node.tail2b516d.ts.net/regex/test \
  -H "Content-Type: application/json" \
  -d '{"pattern": "\\d+", "test_string": "abc 123 def 456"}'

# Split by pattern
curl -X POST https://forge-node.tail2b516d.ts.net/regex/split \
  -H "Content-Type: application/json" \
  -d '{"pattern": "[,;\\s]+", "test_string": "a, b; c  d"}'

# Get common patterns
curl https://forge-node.tail2b516d.ts.net/regex/patterns

Full docs: /regex-docs