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Search among community submitted regex patterns...

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2

Almost universal anime filename matcher

Created·2026-03-07 18:37

matches anime filenames. such as Group] Name [Episode[Audiometa]others.ext supports NCOP, NCED, OP, ED, SP, SPnn, nn, nn.n, nn.n_vn mp4, mkv, srt, ass but you could add more. the episode must be written within a [] bracket. finally, this regex cannot cover all the cases and obviously have some issues, but it's fine under most cases. it is also a small regex practice for me.

Submitted by NullCompute0754

2

Validate color with grb group

Created·2026-02-03 03:22

Updated·2026-02-04 03:36

match: #aabbcc #abc (255,255,255) (255,255,255,255) 255,255,255 no match: #gggggg #ggg 256,256,256

Submitted by Doyoung

1

Door_Double

Created·2026-01-27 07:54

Updated·2026-01-28 10:27

Regex for Door_Double

Submitted by anonymous

1

ตรวจสอบพยัญชนะต้นตัวสะกดสระและวรรณยุกต์ไทย

Created·2026-01-22 01:36

Updated·2026-01-23 12:42

Flavor·ECMAScript (JavaScript)

ตรวจสอบพยัญชนะต้น (ต้องมี) ตรวจตัวสะกดสำหรับสระที่ต้องมี ตรวจสอบการวางสระและวรรณยุกต์ไทย หมายเหตุ การตรวจสอบตัวสะกดในภาษาไทยตรวจสอบได้ยากเพราะภาษาไทยเป็นภาษาที่เขียนติด ๆ กันไม่มีการแบ่งคำอย่างชัดเจนทำให้การอ่านภาษาไทยผู้อ่านต้องใช้ความหมายของคำในการตัดสินการอ่านแบ่งคำตามความเหมาะสมเช่นคำว่า "ตากลม" อาจอ่านเป็น "ตาก-ลม" ก็ได้ หรืออ่านเป็น "ตา-กลม"ก็ได้ ดังนั้นการเขียน Regex เพื่อทำการตรวจสอบอาจช่วยได้ระดับหนึ่ง อ่าจมีผิดบ้างถูกบ้าง แต่ก็ถือว่าเป็นเครื่องมือที่ใช้ช่วยเหลือในการตรวจสอบเพิ่มเติมได้ 80% ของความเป็นไปใด้ก็แล้วกันนะครับ หวังว่าการเขียนเพิ่มเติมส่วนนี้ จะมีประโยชน์บ้างไม่มากก็น้อย

Submitted by อธิปัตย์ ล้อวงศ์งาม

2

Secure Email Validation (OWASP-Aligned & DNS-Strict) (RFC 5322)

Created·2026-01-21 16:32

Updated·2026-01-21 16:36

Flavor·ECMAScript (JavaScript)

This regular expression provides a balance between RFC compliance and security-best-practices. It is designed to prevent injection vectors in legacy systems by using a restricted "safe" character subset recommended by the OWASP Validation Regex Repository. Pattern: ^A-Za-z0-9(?:\.A-Za-z0-9_+&-]+)*@(?:[A-Za-z0-9{0,61}[A-Za-z0-9])?\.)+[A-Za-z]{2,63}$ Key Features: Forced Alphanumeric Start: Prevents leading hyphens to avoid command injection vulnerabilities. Security Subset: Restricts special characters to _+&*- to prevent exotic character injections (e.g., pipes or backticks). No Quoted Strings: Forbids quoted strings to eliminate dangerous payloads containing spaces or backslashes. DNS Compliance: Enforces label lengths (1–63 characters) and prevents labels from starting or ending with hyphens. Whole String Anchoring: Uses ^ and $ to ensure the entire input is validated.

Submitted by Gor Sargsyan

1

Python -- Match container image reference parts

Created·2026-01-20 02:14

Updated·2026-01-20 02:28

This is a Python RE for matching different parts and combinations of various docker/container image references, as compatible with docker pull etc. Parts / Capture Groups image: # whole image repo: # everything but the tag/digest registry: # host+port host: port: name: # path within registry reference: # tag or digest (with : or @; I haven't bothered to figure out how to strip that yet) tag: digest: If it matches, it should match image, repo, and name at the very least.

Submitted by neal-ian

1

Check valid URI Scheme according to RFC2396

Created·2026-01-17 07:52

Simple prefix matcher for validating URI Schemes according to [RFC2396, Section 3.1]( http://www.faqs.org/rfcs/rfc2396.html#3.5:~:text=well%20as%20%22http%22%29.-,scheme%20%20%20%20%20%20%20%20%3D%20alpha%20*%28%20alpha%20%7C%20digit%20%7C%20%22%2B%22%20%7C%20%22%2D%22%20%7C%20%22.%22%20%29,-Relative%20URI%20references) Go Playground: https://go.dev/play/p/vtYEugsNAfo

Submitted by Gwyneth Llewelyn

1

URL, URI format validation

Created·2026-01-16 16:16

Updated·2026-01-16 23:25

Flavor·ECMAScript (JavaScript)

URL, URI format validation

Submitted by Atipat Lorwongam

2

Regex Email Format

Created·2026-01-15 17:39

Updated·2026-01-16 23:26

Flavor·ECMAScript (JavaScript)

Used to check Email Format

Submitted by Atipat Lorwongam

1

ตรวจสอบวรรณยุกต์และสระในภาษาไทย (รองรับการลากเสียงอาาาา)

Created·2026-01-15 17:20

Updated·2026-01-23 07:30

Flavor·ECMAScript (JavaScript)

ตรวจสอบการใช้วรรณยุกต์และสระในภาษาไทย รองรับการใช้สระอาาาาาติดกันแบบลากเสียง ไม่ตรวจสอบพยัญชนะต้นและตัวสะกด

Submitted by อธิปัตย์ ล้อวงศ์งาม

1

ตรวจสอบวรรณยุกต์และสระในภาษาไทย

Created·2026-01-15 17:19

Updated·2026-01-23 07:29

Flavor·ECMAScript (JavaScript)

ใช้ตรวจสอบวรรณยุกต์และสระในภาษาไทย ไม่ตรวจสอบพยัญชนะต้นและตัวสะกด

Submitted by อธิปัตย์ ล้อวงศ์งาม

1

cApStAn OmegaT flagged / disallowed text

Created·2026-01-11 22:28

Flagged / disallowed text expression used in cApStAn's build of OmegaT

Submitted by msoutopico

1

cApStAn OmegaT custom tags

Created·2026-01-11 22:26

Custom tags expression used in cApStAn's build of OmegaT

Submitted by msoutopico

1

Simple CSS Selector parser

Created·2025-12-31 14:18

Updated·2025-12-31 14:22

Flavor·ECMAScript (JavaScript)

Basic Regex for CSS Selector. Pseudo-Elements, Combinators and other advanced stuff are not supported.

Submitted by anonymous

1

1

Created·2025-12-28 04:09

Submitted by anonymous

1

AoC 2025 Day 5

Created·2025-12-19 23:04

AoC 2025 Day 5 part 1 but also works for part 2. You just don't need the IDs at the bottom for part 2

Submitted by anonymous

1

Text in between HTML tags and inside quotation marks within HTML tags

Created·2025-12-08 04:32

Flavor·ECMAScript (JavaScript)

Overview This Regular Expression shows any text between HTML tags or between quotation marks within the tags themselves. An example would be: <HTML lang="en", then selecting the 'en' from there. Group 1 is between tags, and group 2 is in the quotes. I recommend only using half of this regular expression, like the 'between tags' part, or the 'inside quotes part'. Explanation The whole regex is built of two alternates, the tags and quotes part. The tags part (the first part) starts with a lookbehind of a closing of a tag, then a lazy part that selects almost characters, and a lookahead that checks for the beginning of tag (so the text is between tags). The quotes part is built in a similar structure, where it looks behind for an open of a tag, .+ , then checking for an equals sign followed by a quotation mark. The middle section of the quotes part is again just searching for text, but also not including quotation marks. The lookahead checks for a closing quotation mark and that's it! Please comment any questions or email me.

Submitted by daniel@sabian.pro

1

Regex for MusicBrainz Picard Plugin – Title Cleaner OST

Created·2025-11-28 16:26

Updated·2025-11-28 16:26

One of the regular expressions I use for my plugin Title Cleaner OST.

Submitted by nrth3rnlb

1

Posição Dianteira

Created·2025-11-21 16:15

Captura da posição dianteira e suas respectivas variações

Submitted by Erick Bryan Cubas

1

Universal HTML <input type="email"... requirement pattern

Created·2025-10-31 01:19

Flavor·ECMAScript (JavaScript)

This regex is a universal pattern used for the HTML input tag with type="email". Dont use type="email" as the pattern does not work with it. For the pattern to work correctly, use type="text" with inputmode="email" if you want to display the desired keyboard on mobile screens.

Submitted by kiko

1

IPv4 no leading zeros

Created·2025-10-28 09:57

Flavor·ECMAScript (JavaScript)

An IPv4 expression that doesn't allow leading zeros in octets. 10.0.0.1 will pass 10.0.0.01 shouldn't pass

Submitted by machfist

1

Cube Voyager Application Headers

Created·2025-10-24 05:43

Matching Cube Voyager Application Files

Submitted by On Dai Wai

1

dumb email

Created·2025-10-17 10:00

it is a naive email regex

Submitted by anonymous

1

Ultimate number selecter

Created·2025-10-07 02:25

Updated·2025-10-07 06:42

Selects all forms of numbers, ranging from decimals, to numbers with commas

Submitted by anonymous

1

Convetional commits

Created·2025-10-06 13:11

Convetional commits regex

Submitted by anonymous

1

普罗米修斯解析匹配

Created·2025-09-27 07:04

"^([\w_]+)(?:\{(*)\})?\s+([\d\\.e+-]+)(?:\s+(\d+))?$"gm

Submitted by umanan

1

Only one special character("-") per word

Created·2025-09-20 18:27

Flavor·ECMAScript (JavaScript)

Only one special character ("-") is allowed when entering a word

Submitted by anonymous

1

Email validation regex

Created·2025-09-05 11:27

Flavor·ECMAScript (JavaScript)

Compliant with RFC 5322

Submitted by valentinllpz

1

Integer Number

Created·2025-08-17 13:59

Updated·2025-08-17 14:06

Flavor·ECMAScript (JavaScript)

Submitted by Buddha

1

Replace last two digits of a four digit number with 99

Created·2025-08-14 17:59

Updated·2025-08-14 18:00

Replaces the last two digits of any four digit number with 99. Useful for replacing chart of account codes for accounting software mapping functionalities. Helpful for ProPay.

Submitted by Eric Higdon

1

URL matching

Created·2025-08-07 13:22

Matches URLs in texts. Forked from https://regex101.com/r/cX0pJ8/1 , then removed matching emails

Submitted by anonymous

1

email address

Created·2025-08-07 13:05

Submitted by anonymous

1

op

Created·2025-07-29 00:21

Flavor·ECMAScript (JavaScript)

Submitted by anonymous

1

Detect age-related conversations.

Created·2025-07-21 08:50

Updated·2025-07-21 16:09

Flavor·ECMAScript (JavaScript)

Safety-measure protocol for online communities.

Submitted by mable42

1

Pixiv Profile ID Finder

Created·2025-07-18 19:27

Updated·2025-07-18 21:15

This is to find profile ids for pixiv.net

Submitted by secp192k1

1

Keep Talking and Nobody Explodes - Passwords

Created·2025-07-18 05:15

See the chapter On the Subject of Passwords in Bomb Defusal Manual

Submitted by prprnya

1

regex for '' deletion

Created·2025-07-16 16:44

Updated·2025-07-16 16:44

Flavor·ECMAScript (JavaScript)

regex for '' deletion

Submitted by Egor K

1

Hex Color Validator

Created·2025-07-11 15:00

Verifies whether each input line contains a valid three- or six-digit hexadecimal number, commonly used as color codes in CSS and other technologies. Each number must begin with the "#" sign. I've seen other regexes for this which use individual expressions for a three-digit number and a six-digit number as alternates for each other. I didn't see any reason to repeat the character class twice, so I used only one pattern of three digits, which may appear one or two times. Valid Hex Color Codes #FFF #025 #F0A1FB Invalid Hex Color Codes #fffabg #abcf #12365erff

Submitted by Mr. Lance E Sloan

1

1

Created·2025-07-09 00:30

Updated·2025-07-09 00:33

https://regex101.com/r/hIak43/1

1

Chess Algebraic Notation

Created·2025-07-07 19:15

Detects chess Algebraic notation. See: https://en.wikipedia.org/wiki/Algebraic_notation_(chess) Using Regexp groups to know what information is present on the notation (pieces or move disambiguation). Only supported by Flavor that has named group verification.

Submitted by Johan JANIN

1

RE-24806

Created·2025-07-03 11:56

Updated·2025-07-09 09:10

Submitted by anonymous

1

RE-24812

Created·2025-07-03 11:55

Updated·2025-07-09 07:56

Submitted by anonymous

1

RE-24799

Created·2025-07-03 09:36

Updated·2025-07-09 09:03

Submitted by anonymous

1

RE-24793

Created·2025-07-03 09:07

Updated·2025-07-09 07:34

Submitted by anonymous

1

RE-24781

Created·2025-07-03 05:26

Updated·2025-07-09 06:39

Submitted by anonymous

1

RE - 24755

Created·2025-06-25 08:48

Submitted by anonymous

1

RE - 20475

Created·2025-06-25 07:55

Submitted by anonymous

1

RE - 20473

Created·2025-06-25 07:45

Submitted by anonymous

1

RE - 20485

Created·2025-06-24 06:29

Submitted by anonymous

1

RE - 20482

Created·2025-06-24 06:25

Submitted by anonymous

Community Library Entry

13

Regular Expression
Created·2016-01-23 17:46
Flavor·ECMAScript (JavaScript)

/

^\$?([0-9]{1,3},([0-9]{3},)*[0-9]{3}|[0-9]+)(\.[0-9][0-9])?$

/

mg

Open regex in editor

Description

no description available

Submitted by anonymous