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
Most upvotes
Most downvotes
Highest Score
Lowest Score
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 15,260 community submitted regex patterns...
1
Invalid HTML Attribute (Strict)
ECMAScript (JavaScript)
This version of the regex is less permissive than the w3c documentation.. It matches only the common attribute syntax.
Submitted by
bye-csavier
-
4 months ago
1
Invalid HTML Attribute (Permissive)
ECMAScript (JavaScript)
This regex is based on the specifications in the w3c documentation. The rules are* very permissive, and some* of this characters actually lead to errors in browsers.
Submitted by
bye-csavier
-
4 months ago
1
Invalid CSS Class
ECMAScript (JavaScript)
Checks if the syntax of the passed string would be a valid css class.
Submitted by
bye-csavier
-
4 months ago
(Last modified 4 months ago)
1
Entity framework mappers
.NET 7.0 (C#)
This expression converts a modelbuilder to an IEntityTypeConfiguration class. Useful for tidying up the result of a scaffold operation.
Submitted by
MK
-
5 months ago
(Last modified 5 months ago)
1
Date and age matcher
Python
matches strings like: "01/04/2023", "14/May/24" and "20" (age). WARNING: for american dates swap day and month! Groups: Date - the whole date Day - day Month - month...
Submitted by
OlgPok
-
5 months ago
(Last modified 5 months ago)
1
indented lines with continuation
PCRE (PHP <7.3)
Example taken from SO,
Submitted by
anonymous
-
5 months ago
1
match html and xml brackets (<>) and all their content. It doesn’t match inner text.
ECMAScript (JavaScript)
match html and xml brackets () and all their content. It doesn’t match inner text. Useful to remove markup tags from a xml or html string, leaving only the text.
Submitted by
Emasoft
-
5 months ago
1
linuxserver tags for renovate
ECMAScript (JavaScript)
Match: linuxserver/prowlarr:1.16.2.4435-ls67 1.16.2.4435-ls67 linuxserver/radarr:5.4.6.8723-ls215...
Submitted by
Yevhen Kolomeiko (Sad-Soul-Eater)
-
5 months ago
(Last modified 5 months ago)
1
Traefik plugins in traefik-ingress helm values for renovate bot
ECMAScript (JavaScript)
Match: plugins: plugin-name: { moduleName: github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin, version: v1.3.0 } plugins:...
Submitted by
Yevhen Kolomeiko (Sad-Soul-Eater)
-
5 months ago
(Last modified 5 months ago)
1
VictoriaMetrics operator image for renovate bot
ECMAScript (JavaScript)
Match: image: { repository: user_name-123/repo_name-123, tag: v1.23.45_amd64-cluster } image: repository: "user_name-123/repo_name-123"...
Submitted by
Yevhen Kolomeiko (Sad-Soul-Eater)
-
5 months ago
(Last modified 5 months ago)
1
"fake" markdown link detection
Rust
This regex catches markdown links where the display text is also a link, like this: \example.com in order to prevent people getting tricked and clicking on a link that isn't what it says it is. See the test string for a much longer explanation with examples.
Submitted by
Osh
-
5 months ago
(Last modified 5 months ago)
1
Госуслуги - сопроводительное письмо (недопустимые символы)
.NET 7.0 (C#)
Если вы подаёте электронное заявление через портал Госуслуг и набираете текст в стороннем редакторе, то при попытке отправить такое заявление может появиться ошибка о наличии недопустимых символов. С помощью этого регулярного выражения вы сможете найти недопустимые символы и скорректировать текст с...
Submitted by
NG256
-
5 months ago
1
remove gnu license information
ECMAScript (JavaScript)
this is just for the sake of creating documentation or working with a lot of files that all contain this license i just needed to remove them, in order to reduce the size of the overall files
Submitted by
TheonlyAquarius
-
5 months ago
1
E-mail validation regex
Python
For Culver City Learn Teach Code 4/16/24 Regex obtained from: https://stackoverflow.com/a/21608456/2683447 List is subset taken from: https://gist.github.com/cjaoude/fd9910626629b53c4d25
Submitted by
anonymous
-
5 months ago
1
Match function declerations in python
Python
This regex will match function declerations in python
Submitted by
danielnachumdev
-
5 months ago
1
password regex (strict)
ECMAScript (JavaScript)
Synopsis The subject password must fullfill several criterias to ensure it's have an acceptable level of minimal security. Success criterias contains at least 1 number (0-9) contains at least 1 uppercase letters...
Submitted by
Soma Szelpal
-
5 months ago
(Last modified 5 months ago)
1
Renamer Log file to CSV
PCRE (PHP <7.3)
Catches our log files renamed file names and adds them to CSV file
Submitted by
anonymous
-
5 months ago
1
Simple EIN (Employee Identification Number) format
ECMAScript (JavaScript)
An Employer Identification Number (EIN) is also known as a Federal Tax Identification Number, and is used to identify a business entity. Generally, businesses need an EIN. It expects 2 digits at start, then a dash ('-') and then 7 digits. No assumptions regarding the allowed prefixes, etc.
Submitted by
@uazure
-
6 months ago
1
Number Expr
ECMAScript (JavaScript)
A "raw" expression matching numbers; anything from a simple 123 to -123,456.78e90 will be matched. Note: this may be vulnerable to ReDoS attacks when long multiline entries are available & a few hundered (or thousand depending on the length of the input) steps is a problem; check the Regex Debugger...
Submitted by
expo.moe
-
6 months ago
(Last modified 6 months ago)
1
T-SQL find comments in script
.NET 7.0 (C#)
Finds the comments in a t-sql (tsql) script
Submitted by
Paw Jershauge
-
6 months ago
1
2
3
4
5
6
...
763
Community Library Entry
1
Regular Expression
PCRE2 (PHP >=7.3)
/
^
(
[^
0
-
9
]
*
\b
(
(
[
1
-
9
]
|
1
[
0
-
9
]
|
22
|
2
[
4
-
9
]
|
[
3
-
9
]
[
0
-
9
]
|
1
[
0
-
2
]
[
0
-
9
]
|
13
[
0
-
6
]
|
1
[
4
-
9
]
[
0
-
9
]
|
[
2
-
9
]
[
0
-
9
]
[
0
-
8
]
|
[
1
-
9
]
[
0
-
9
]
{3}
|
[
1
-
5
]
[
0
-
9
]
{4}
|
6
[
0
-
4
]
[
0
-
9
]
{3}
|
65
[
0
-
4
]
[
0
-
9
]
{2}
|
655
[
0
-
2
]
[
0
-
9
]
|
6553
[
0
-
5
]
)
\b
[^
0
-
9
]
*
)*
$
)
/
mg
Open regex in editor
Description
Match all Ports except 20,21,23,137,1378,139
Submitted by
anonymous
-
6 months ago