Text Processing
Extract all email addresses from input text, articles, web source code, or mixed content. Supports deduplication and export to JSON.
bulk-email-extractorText Processing
Extract all HTTP/HTTPS links from text with deduplication and export options
bulk-url-extractorValidation
Validate phone numbers from multiple countries including China, US, and more with detailed formatting and carrier info
global-phone-validatorValidation
Validate Amazon Resource Names (ARNs) format for AWS cloud resources
aws-arn-validatorFinance
Calculate bond current yield and yield to maturity (YTM)
bond-yield-calculatorDeveloper Tools
Generate test credit card numbers for development and testing purposes
credit-card-generatorFitness
Calculate calories burned while cycling
cycling-burn-calculatorValidation
Validate postal codes from multiple countries including US ZIP, UK Postcode, Canada, and more
global-postal-code-validatorValidation
Validate license plate formats from multiple countries including China, USA, Japan, and more
license-plate-validatorValidation
Validate Hex (#FFF, #RRGGBB), RGB/RGBA, HSL/HSLA color code syntax
color-code-validatorValidation
Validate Linux Crontab定时任务表达式（分 时 日 月 周）syntax
cron-expression-validatorValidation
Validate credit card numbers and identify card type (Visa, MasterCard, UnionPay, etc.)
credit-card-validator