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RegExr

v2.0

by gskinner Donate RegExr v1 GitHub

Library

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RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp).

Results update in real-time as you type.
Roll over the Text or Expression for details.
Full support for Undo / Redo.
Save & share your expressions with others.
Explore the Library for help & examples.
Search for & rate Community patterns.

Expression

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flags

Text

Substitution