Document Tools
Render HTML/CSS to a PDF with precise headers, footers, and print settings
html-to-pdf-preciseHealth
Calculate bowling score with frame-by-frame breakdown
bowling-scoreHealth
Calculate golf handicap index based on scores and course ratings
golf-handicapText Processing
Extract hashtags (#Topic) and user mentions (@Username) from social media text like Twitter, Instagram, etc.
hashtag-mention-extractorText 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-validatorFinance
Calculate bond current yield and yield to maturity (YTM)
bond-yield-calculatorValidation
Validate postal codes from multiple countries including US ZIP, UK Postcode, Canada, and more
global-postal-code-validatorValidation
Validate JSON data against a JSON Schema to verify structure and data types
json-schema-validatorValidation
Validate International Bank Account Number (IBAN) and SWIFT/BIC codes with checksum verification
iban-swift-validatorValidation
Validate Linux Crontab定时任务表达式（分 时 日 月 周）syntax
cron-expression-validator