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
Community Patterns
Search among 15,160 community submitted regex patterns...
29
CSV line parsing
PCRE (PHP <7.3)
Captures all fields from a CSV file's line. Can be customized with user-defined field separator and protecting character.
Submitted by
Various
-
10 years ago
52
Disorted Email Addresses
PCRE (PHP <7.3)
Matches distorted email addresses and converts them back to real ones.
Submitted by
dislick
-
11 years ago
7
Max - URL Extract
PCRE (PHP <7.3)
no description available
Submitted by
Ayush
-
8 years ago
18
Date: DD-MM-YYYY hh:mm:ss
Recommended
PCRE (PHP <7.3)
Validate and capture dateTime parts, includes validation for leap years, range 1000-2999. Fixed bug
Submitted by
Ka.
-
11 years ago
25
Quote Macthing with escape
ECMAScript (JavaScript)
Matches text within quotes (", ') and escapes the charecters.
Submitted by
Vihan Bhargava
-
9 years ago
106
ECMAScript/JavaScript trim
ECMAScript (JavaScript)
Trim leading and trailing whitespace from a string.
Submitted by
fp
-
11 years ago
(Last modified 8 days ago)
11
html color match: transparent, #fff, #123456, rgb, rgba, hsl, hsla
ECMAScript (JavaScript)
This may be useful or not to test whether a given string is a valid (more or less) html color value. It matches color values such as: #123 - short hex color value #123456 - hex color value rgb(255,255,0) - rgb color value rgba(255,255,0,1.0) - rgba color value hsl(360,100%,100%) - hsl color value...
Submitted by
grouch
-
9 years ago
22
UK Postcode Checker
PCRE (PHP <7.3)
Checks for valid UK/British postcodes. There was another on here that had for some reason been upvoted, but it was actually incorrect as it worked on none of my valid own postcodes! Namely that it assumed two letters and a number (BS3) when you can have variations (M20). Allows for an optional spac...
Submitted by
MaffooBristol
-
9 years ago
34
Google like regex
ECMAScript (JavaScript)
Attempts to mimic Google search box behavior, returning an array with the separated search strings (that keep the +/- indicator for following operations)
Submitted by
mettjus
-
10 years ago
4
For Auto RTFs
PCRE (PHP <7.3)
no description available
Submitted by
Dan Bloomquist
-
11 years ago
4
outer Parentheses
PCRE (PHP <7.3)
Finds the outermost pair of parentheses. Compatible with any amount of nesting
Submitted by
Jonas Gerneth
-
10 years ago
4
Command handling
PCRE (PHP <7.3)
Handles commands like in CMD
Submitted by
anonymous
-
10 years ago
4
parsing a numeric strings with backslash using regexp
PCRE (PHP <7.3)
no description available
Submitted by
A.K. Asik
-
9 years ago
4
uri parser
PCRE (PHP <7.3)
no description available
Submitted by
anonymous
-
9 years ago
4
Match nth occurence of pattern
PCRE (PHP <7.3)
Match nth occurence of the patterns in the inner parenthesis. Put nth that you want to match in the curly braces (here, {3}).
Submitted by
Alex Hall
-
9 years ago
4
Epic EHR Sticker QR code patient information
PCRE (PHP <7.3)
Text output produced by reading the QR code present on patient stickers created by Epic (R) medical record software
Submitted by
MeWa
-
9 years ago
4
TV series season and episode names
PCRE (PHP <7.3)
This regex matches against season and series names
Submitted by
mikey
-
9 years ago
4
Typescript - /// <reference path="..."/> Expression
ECMAScript (JavaScript)
Finds Typescript's reference path syntax.
Submitted by
Lovelidge, Shawn
-
9 years ago
4
Remove common numeric suffixes (eg: 40m, 60%)
PCRE (PHP <7.3)
Usage: "40%".replace(/\b([\d\.]+)mkb%/ig, '$1')
Submitted by
anonymous
-
9 years ago
4
Validate hex color
PCRE (PHP <7.3)
Validates hexadecimal color codes based on the following rule set: Optionally starting with a hash. 3 or 6 characters in length. Using the [0-9a-f] character set.
Submitted by
Nathaniel Blackburn
-
8 years ago
1
2
3
4
5
6
...
758
determine if input text is an URL
0
Regular Expression
PCRE2 (PHP >=7.3)
/
(
(
https
?
:
)?
\/\/
)?
(
(
[
\d\w
]
|
%
[
a
-
fA
-
f
\d
]
{2,2}
)+
(
:
(
[
\d\w
]
|
%
[
a
-
fA
-
f
\d
]
{2,2}
)+
)?
@
)?
(
[
\d\w
]
[
-
\d\w
]
{0,253}
[
\d\w
]
\.
)+
[
\w
]
{2,63}
(
:
[
\d
]
+
)?
(
\/
(
[
-+_~.
\d\w
]
|
%
[
a
-
fA
-
f
\d
]
{2,2}
)*
)*
(
\?
(
&
?
(
[
-+_~.
\d\w
]
|
%
[
a
-
fA
-
f
\d
]
{2,2}
)
=
?
)*
)?
(
#
(
[
-+_~.
\d\w
]
|
%
[
a
-
fA
-
f
\d
]
{2,2}
)*
)?
/
gmi
Open regex in editor
Description
determine if input text is an URL
Submitted by
anonymous
-
a year ago