Regex Cheat Sheet
A searchable quick reference for regex syntax — click any card to copy.
Regex
Test, replace, and explore regular expressions.
About Regex
Test, replace, explain, and escape regular expressions. Quickly verify pattern behavior without leaving the browser.
Common use cases
- Testing validation patterns
- Log analysis & filtering
- Previewing text replacement
- Learning & researching regex
Popular Tools
Regex Replace Tester
Test regex search and replace in real time with match highlights and capture group details.
Regex Explain
Break down a regex pattern into color-coded tokens with plain-language explanations for each part.
Regex Escape
Automatically escape regex metacharacters in a string for safe use in patterns.
All Regex Tools (5)
Regex Tester
Test regular expressions and highlight matches in real time.
Regex Replace Tester
Test regex search and replace in real time with match highlights and capture group details.
Regex Explain
Break down a regex pattern into color-coded tokens with plain-language explanations for each part.
Regex Escape
Automatically escape regex metacharacters in a string for safe use in patterns.
Regex Cheat Sheet
A searchable quick reference for regex syntax — click any card to copy.