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 18,020 community submitted regex patterns...
1
Find comments in Kotlin
PCRE2 (PHP >=7.3)
Finds comments in Kotlin but not inline comments
Submitted by
anonymous
-
5 months ago
1
Log Match
PCRE2 (PHP >=7.3)
test
Submitted by
Mohammad
-
5 months ago
1
Happy birthday
PCRE2 (PHP >=7.3)
happy birthday with various variations
Submitted by
AdiGro
-
5 months ago
1
Match all and only Emoji
ECMAScript (JavaScript)
Purpose I wanted to make a regex that just works. This is it for ECMAScript engines. Capabilities ...
Submitted by
anonymous
-
6 months ago
1
appstoreoptimizationtool
PCRE2 (PHP >=7.3)
App Store Optimization Tool
Submitted by
appvector
-
6 months ago
1
Tenable Identity Exposure - Indicator of Attack - Syslog regex
PCRE2 (PHP >=7.3)
A regex for IOA syslog messages sent by Tenable Identity Exposure.
Submitted by
Taher Karaki
-
6 months ago
1
tmp_4679_DBGSSE_WAR_Optionsscheine_Type1_Table
PCRE2 (PHP >=7.3)
tmp saved to work on it further ...
Submitted by
mhergh
-
6 months ago
1
How to find invoice number behind words containing "訂單"
PCRE2 (PHP >=7.3)
I need help to find invoice number following words among which contains "訂單". There are also numbers (price and cost) behind (but not immediately) same word "訂單"
Submitted by
sunny
-
6 months ago
1
JWT pattern
ECMAScript (JavaScript)
handles both JWS (3 segments) and JWE (5 segments) remove the ending (?:(?:... to handle JWS only segments 1+2 are expected tp start with e[yw], an encoded start of JSON object {" or {\n remove/extend it to match used token structure or make it even more restrictive (ey[IJ]|ewo) to match encod...
Submitted by
iki
-
6 months ago
(Last modified 5 months ago)
1
Blurring 13-16 digits
PCRE2 (PHP >=7.3)
Blurring 13-16 digits
Submitted by
anonymous
-
6 months ago
1
credit number hider
PCRE2 (PHP >=7.3)
Hides credit card numbers from 13-16 digits
Submitted by
anonymous
-
6 months ago
1
RFC3986 URI
ECMAScript (JavaScript)
Regexp to match URI using syntax defined in RFC 3986 a.k.a. Uniform Resource Identifier (URI): Generic Syntax to create best URI regexp there is (noone bothered to do so). #URL #URI #RFC #3986 #RFC3986
Submitted by
Niemiets
-
6 months ago
(Last modified 5 months ago)
1
find user name in linkedin profile
PCRE2 (PHP >=7.3)
linkedin.com/company/name/ finds name
Submitted by
anonymous
-
6 months ago
(Last modified 6 months ago)
1
RFC3986 URI-reference
ECMAScript (JavaScript)
Regexp to match URI-reference using syntax defined in RFC 3986 a.k.a. Uniform Resource Identifier (URI): Generic Syntax to create best URI-reference regexp there is (noone bothered to do so). #URL #URI #RFC #3986 #RFC3986
Submitted by
Niemiets
-
6 months ago
(Last modified 5 months ago)
1
Validating any URLs
PCRE2 (PHP >=7.3)
for JS regular expression to validate any http|https|ftp|IPv4 address, supported: authority** username:password (example https://username:password@example.com); port** :0-65565 (example https://example.com:80); query/queries** ?c=1 or ?c=1&d=x (example https://example.com/main.php?c=1&d=x);...
Submitted by
anonymous
-
6 months ago
1
VALID_IP
Python
VALID_IP checker
Submitted by
GSV
-
6 months ago
(Last modified 6 months ago)
1
Markdown Masked links
ECMAScript (JavaScript)
matches for any markdown Masked link text detected `` not detected (not valid(on most platforms))
Submitted by
yande
-
6 months ago
1
IPv4, IPv6 and CIDR ranges validation pattern
ECMAScript (JavaScript)
This regex can be used to validate IPv4 and IPv6 addresses as well as CIDR ranges
Submitted by
Simon
-
6 months ago
(Last modified 3 months ago)
2
\tilde \alpha
PCRE2 (PHP >=7.3)
\tilde \alpha
Submitted by
anonymous
-
6 months ago
1
Videos that start with [....]
PCRE2 (PHP >=7.3)
^.\\\[[\w\d]?]*?..{4,}$
Submitted by
pvtpyle1299
-
6 months ago
1
...
17
18
19
20
21
...
901
Community Library Entry
1
Regular Expression
ECMAScript (JavaScript)
/
e
[
yw
]
[
A
-
Za
-
z0
-
9-_
]
+
\.
(?:
e
[
yw
]
[
A
-
Za
-
z0
-
9-_
]
+
)?
\.
[
A
-
Za
-
z0
-
9-_
]
{2,}
(?:
(?:
\.
[
A
-
Za
-
z0
-
9-_
]
{2,}
){2}
)?
/
g
Open regex in editor
Description
handles both JWS (3 segments) and JWE (5 segments)
remove the ending
(?:(?:...
to handle JWS only
segments 1+2 are expected tp start with
e[yw]
, an encoded start of JSON object
{"
or
{\n
remove/extend it to match used token structure
or make it even more restrictive
(ey[IJ]|ewo)
to match encoded
{"\w
or
{\n"
payload (2nd segment) may be empty
both header (1st segment) and payload are expected to start with
eyJ
, a base64 encoded start of JSON object
{"
accepts only proper Base64url encoding (RFC 4648) without Base64 padding
=
test it at
https://regex101.com/r/V99DS0
Submitted by
iki
-
6 months ago
(Last modified 5 months ago)