input stringlengths 13 216 | label stringlengths 3 18 | note stringlengths 38 98 |
|---|---|---|
^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$ | email | Standard email validation covering local, domain, and TLD per RFC 5322 simplified |
^(https?://)?(www\.)?[-a-zA-Z0-9@:%._\+~#?&/=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)$ | url | Validates HTTP/HTTPS URLs with optional scheme and www prefix |
^\+?[1-9]\d{1,14}$ | phone-e164 | E.164 international phone format: optional plus, 1-15 digits, no leading zero |
^\(?(\d{3})\)?[-.\s]?(\d{3})[-.\s]?(\d{4})$ | phone-us | US phone number with optional area code parentheses and flexible separators |
^(?:4[0-9]{15}(?:[0-9]{3})?|5[1-5][0-9]{14}|(?:222[1-5]|22[3-9][0-9]|2[3-6][0-9]{2}|27[01][0-9]|2720)[0-9]{12}|6(?:011|5[0-9][0-9])[0-9]{12}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|(?:2131|1800|35\d{3})\d{11})$ | credit-card | Validates Visa, Mastercard, Amex, Discover, and JCB card numbers by prefix and length |
^((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])\.){3}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])$ | ipv4 | IPv4 address where each octet is 0-255 |
^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$ | uuid | Standard UUID v1-v5 format in lowercase hex with hyphens |
^[a-z0-9]+(?:-[a-z0-9]+)*$ | slug | URL-safe slug: lowercase alphanumerics separated by single hyphens, no leading/trailing hyphen |
^(0[1-9]|[12]\d|3[01])[-/.](0[1-9]|1[0-2])[-/.](19|20)\d{2}$ | date-dd-mm-yyyy | Day-month-year date with separators, month 01-12, day 01-31, year 1900-2099 |
^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$ | password | Password requiring at least one lowercase, one uppercase, one digit, one special char, min 8 chars |
^(?:978|979)[0-9]{10}(?:[0-9Xx])$ | isbn-13 | ISBN-13 with prefix 978/979, 10 digits, and check digit 0-9 or X |
^(?:\d{5}(?:-\d{4})?)$ | postal-us | US ZIP code (5 digits) or ZIP+4 (5-4 digits with hyphen) |
^(?!000|666|9\d{2})\d{3}-(?!00)\d{2}-(?!0000)\d{4}$ | ssn | US SSN excluding invalid area/group/serial numbers like 000, 666, 9xx, 00 group, 0000 serial |
^([0-9A-Fa-f]{2}:){5}[0-9A-Fa-f]{2}$ | mac-address | MAC address in colon-separated hex pairs (6 groups of 2) |
^([0-9a-f]{1,4}:){7}[0-9a-f]{1,4}$ | ipv6-full | Full IPv6 address with 8 groups of 1-4 hex digits separated by colons |
^[A-Za-z0-9_-]{20,256}\.[A-Za-z0-9_-]{20,256}\.[A-Za-z0-9_-]{20,256}$ | jwt | JSON Web Token structure: three base64url segments separated by dots |
^\d+\.\d+\.\d+(?:-([a-zA-Z\-]+(?:\.[0-9a-zA-Z\-]+)*))?(?:\+([0-9a-zA-Z\-]+(?:\.[0-9a-zA-Z\-]+)*))?$ | semver | Semantic versioning: major.minor.patch with optional prerelease and build metadata |
^#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$ | hex-color | CSS hex color code: 3 or 6 hex digits prefixed with # |
^[A-Za-z0-9+/]+={0,2}$ | base64 | Base64 encoded string with optional padding of 0-2 equals signs |
^(?=.{1,253}$)([a-zA-Z0-9](?:[a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])?\.)+[a-zA-Z]{2,63}$ | hostname | DNS hostname: labels of 1-63 chars, total up to 253, TLD 2-63 letters |
^/api/v\d+(/[a-z0-9_\-]+)+$ | api-endpoint | REST API endpoint path starting with /api/v<version> followed by lowercase path segments |
^[A-Za-z0-9]{16,64}$ | api-key | API key: 16-64 alphanumeric characters, no special chars or spaces |
^\d{2}-\d{7}$ | tax-id-in | Indian PAN/Tax ID format: 2 digits, hyphen, 7 digits |
^[0-9]{4}\s?[0-9]{4}\s?[0-9]{4}\s?[0-9]{4}$ | bank-account | 16-digit bank account number with optional spaces every 4 digits |
^(?:[a-zA-Z]{2}:)?[0-9]{5,12}$ | routing-number | US ABA routing number: optional 2-letter prefix, 5-12 digits |
^(?:3[47]\d{13}|6(?:011|5\d{2})\d{12}|(?:4\d{15}|5[1-5]\d{14}|2(?:2[2-9][1-9]|2[3-9]\d{2}|[3-6]\d{3}|7[01]\d{2}|720)\d{11}|3(?:0[0-5]|[68]\d)\d{11}|35\d{14})$ | credit-card-strict | Strict credit card validation by brand prefix and exact length, no spaces or dashes allowed |
^[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?(\.[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?)*$ | domain-label | Single domain label or full domain: lowercase alphanumeric and hyphens, max 63 chars per label |
^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(?:\.\d{1,6})?(?:Z|[+-]\d{2}:\d{2})$ | iso8601-datetime | ISO 8601 datetime with optional fractional seconds and timezone offset or Z |
^(?:[A-Z][a-z]{2,9})\s\d{1,5}$ | postcode-uk | UK postcode: 2-3 letter outward code, space, 1-5 digit inward code |
^[0-9]{5}-[0-9]{4}$ | postal-canada | Canadian postal code: 5 digits, hyphen, 4 digits |
YAML Metadata Warning:empty or missing yaml metadata in repo card
Check out the documentation for more information.
Battle-Tested Regex Validations
A curated collection of 25+ reliable, tested regular expressions for common validation tasks such as emails, URLs, and phone numbers. Each entry includes the pattern, a test input, and a note explaining its real-world applicability. Ideal for developers who need dependable validation logic without reinventing the wheel.
30 rows · category: utility · licence: CC0-1.0 (public domain)
Usage
import sys
sys.path.insert(0, ".")
from tool import validate_label, get_entries
entries = get_entries()
print(f"Loaded {len(entries)} regex entries")
print(validate_label("email", "user@example.com")) # True
print(validate_label("email", "not-an-email")) # False
print(validate_label("ipv4", "192.168.1.1")) # True
print(validate_label("uuid", "12345678-1234-1234-1234-123456789012")) # True
print(validate_label("slug", "my-blog-post")) # True
print(validate_label("hex-color", "#ff5733")) # True
Sample rows
{"input": "^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}$", "label": "email", "note": "Standard email validation covering local, domain, and TLD per RFC 5322 simplified"}
{"input": "^(https?://)?(www\\.)?[-a-zA-Z0-9@:%._\\+~#?&/=]{2,256}\\.[a-z]{2,6}\\b([-a-zA-Z0-9@:%_\\+.~#?&//=]*)$", "label": "url", "note": "Validates HTTP/HTTPS URLs with optional scheme and www prefix"}
{"input": "^\\+?[1-9]\\d{1,14}$", "label": "phone-e164", "note": "E.164 international phone format: optional plus, 1-15 digits, no leading zero"}
Files
| File | What |
|---|---|
data.jsonl |
the dataset, one JSON object per line |
tool.py |
stdlib-only loader and helpers |
test_tool.py |
tests that pass against the data |
Source: https://github.com/simalidudu-boop/battle-tested-regex-validations
Support
This is free and public domain. If it saved you time, zap it: SharkSkin@coinos.io
Generated and maintained by an autonomous pipeline. Issues and PRs welcome.
- Downloads last month
- 33