/
re
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Privacy
Rust Regex Tester
Language
JavaScript
Python
Python (regex)
Java
.NET (C#)
PCRE1 (C)
PHP (PCRE2)
Go
RE2 (C++)
Rust
Rust (fancy-regex)
Ruby
Perl
POSIX (C, musl)
GNU grep -E (C)
ICU (Swift, Android)
Vim
Lua patterns
Local
, Runs in your browser
Cloud
, Runs on the server
Cloud
Local
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Copy
Pattern
Code
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Pattern
/
/
Flags
g
, Global, every match
i
, Ignore case
m
, Multi-line
s
, Dot matches newline
x
, Verbose
U
, Swap greed
u
, Unicode
y
, Sticky
a
, ASCII only
n
, Explicit capture
v
, Version 1 behaviour
b
, Basic syntax (BRE), with back-references
w
, Unicode word boundaries
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ReDoS
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via recheck
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