Please enable JavaScript to use this web application.
Regular
Expressions
101
Social
Donate
Info
Regex Editor
Community Patterns
Account
Regex Quiz
Settings
Order By
Most Recent
Highest Score
Lowest Score
Most upvotes
Most downvotes
Filter by Flavor
PCRE2 (PHP >=7.3)
PCRE (PHP <7.3)
ECMAScript (JavaScript)
Python
Golang
Java 8
.NET 7.0 (C#)
Rust
Sponsors
There are currently no sponsors.
Become a sponsor today!
Community Patterns
Search among 12,200 community submitted regex patterns...
2
Email with gmail+ implementation
PCRE2 (PHP >=7.3)
Regex of email with ability to add gmail's +example system example: root email = user@gmail.com gmail+ = user+extra@gmail.com
Submitted by
brad
-
2 years ago
2
Good enough IPv6
PCRE (PHP <7.3)
A good enough approximation to IPv6 based on the examples at https://www.ibm.com/docs/en/ts3500-tape-library?topic=functionality-ipv4-ipv6-address-formats
Submitted by
mig8447
-
2 years ago
2
Replace sub-strings in string
.NET 7.0 (C#)
Replace sub-strings in string
Submitted by
anonymous
-
2 years ago
2
Palindromes
PCRE2 (PHP >=7.3)
Matches palindromes: arbitrary length ignores non-significant characters (spaces, ponctuation) ignores accents, provided the text is NFD-normalized recursive palindromes (e.g. "a été à"): either match the longest one ("a été à") or the nested ones individually ("a", "été", "à") (see comment)
Submitted by
NicolaF_
-
a year ago
(Last modified a year ago)
2
Phone number for all countries
.NET 7.0 (C#)
Phone number for all countries. Valid symbols: ( ), -, whitespace
Submitted by
Alexander Smirnov
-
a year ago
2
Get ip address (only ipv4) Validator
.NET 7.0 (C#)
Get ip address (only ipv4) Validator
Submitted by
Mr.Tang
-
a year ago
(Last modified a year ago)
2
Aus Mobile number
.NET 7.0 (C#)
validates against multiple common formats
Submitted by
anonymous
-
a year ago
2
URL Regex
.NET 7.0 (C#)
Matches protocol, domain, port, path, query and anchor as named capturing groups.
Submitted by
Jonathan
-
a year ago
(Last modified a year ago)
2
IDN Domains and Subdomains
PCRE2 (PHP >=7.3)
IDN Domains & Normal Domains This regex is able to identify any type of domain or subdomain whether it is IDN or normal, this includes domains in emojis, non-Latin characters, etc.
Submitted by
NCK
-
a year ago
2
Mikrotik firewall logs
Golang
Matching for mikrotik ROS 7 Used in promtail and grafana
Submitted by
anonymous
-
a year ago
(Last modified a year ago)
2
regex101: RFC1918 Private IPv4 Addresses, but limited to matching /24 subnet host IDs
PCRE2 (PHP >=7.3)
POSIX ERE compatible, suitable for usage in Bash [ testing Attributions Derived from [regex101: RFC1918 - Private IPv4 addresses by 0100101101001.
Submitted by
anonymous
-
10 months ago
2
Invalid Windows Filename Chars
PCRE (PHP <7.3)
https://docs.microsoft.com/en-us/windows/win32/fileio/naming-a-file Integer value zero, sometimes referred to as the ASCII NUL character. Characters whose integer representations are in the range from 1 through 31, except for alternate data streams where these characters are allowed. For more info...
Submitted by
anonymous
-
10 months ago
(Last modified 10 months ago)
2
Check Email Validity
Java 8
Regular expression to check the email syntax validity. Certainly requires improvement, but it's a good basis to work from. Work with Java and JavaScript.
Submitted by
Alain TOMASIAN <alain.tomasian@kaptus.fr>
-
8 months ago
(Last modified 8 months ago)
2
RFC822 Date Format
PCRE2 (PHP >=7.3)
Test your RSS pubDate has a correctly formatted date value according to the RFC822 standard It will match timeZoneName (eg GMT, EST) or time zone offset (eg. +0100)
Submitted by
anonymous
-
2 months ago
(Last modified 2 months ago)
2
Journalctl
PCRE2 (PHP >=7.3)
This was build on gentoo with english_ca.utf8 IIRC. Might not work for other distros... or locales supports -as the delimiter of hostname suffixing/prefixing
Submitted by
Wolf1098
-
a month ago
2
Parse Excel CSV data
PCRE2 (PHP >=7.3)
This is the best regex I found that was able to correctly parse cells containing multiple lines (hard line breaks). Low number of steps with sufficient speed, and it doesn't require /x option either. Source: https://gist.github.com/awwsmm/886ac0ce0cef517ad7092915f708175f
Submitted by
thdoan
-
a month ago
(Last modified a month ago)
2
Test 1 solution
PCRE2 (PHP >=7.3)
thanks
Submitted by
Zeeble Dorp
-
a month ago
0
Verify and match e-mail address
PCRE (PHP <7.3)
no description available
Submitted by
Josh K
-
11 years ago
-1
Simple replacing. Replaced first folder in path to file.
PCRE (PHP <7.3)
Used with Java regexp. F.e. you can use replaceAll("regexp", "filePath").
Submitted by
E.ch.
-
11 years ago
1
bridal quality
PCRE (PHP <7.3)
no description available
Submitted by
mine
-
11 years ago
1
...
42
43
44
45
46
...
610
URL Regex
2
Regular Expression
.NET 7.0 (C#)
@"
^
(?>
(?'protocol'
[
a
-
zA
-
Z
]
+
)
://
)?
(?'domain'
[
a
-
zA
-
Z0
-
9.
\-
_
]
*
)?
(?>
:
(?'port'
\d
{1,5}
)
)?
/
(?'path'
[
a
-
zA
-
Z0
-
9_
\-
%
]
+
)
(?:
(?>
\?
(?'query'
[
a
-
zA
-
Z0
-
9_
\-
=&%
]
+
)
)
(
)
|
(?>
#
(?'anchor'
[
a
-
zA
-
Z0
-
9_
\-
%
]
+
)
)
(
)
){0,2}
$
"
gm
Open regex in editor
Description
Matches protocol, domain, port, path, query and anchor as named capturing groups.
Submitted by
Jonathan
-
a year ago
(Last modified a year ago)