Health
Calculate bowling score with frame-by-frame breakdown
bowling-scoreText Processing
Extract all Chinese characters from text, filtering out punctuation and English letters, numbers, and non-Chinese symbols
chinese-character-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 Amazon Resource Names (ARNs) format for AWS cloud resources
aws-arn-validatorFinance
Calculate bond current yield and yield to maturity (YTM)
bond-yield-calculatorValidation
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-validatorMedia
Visualize stereo phase correlation for mono compatibility checks
audio-stereo-correlation-meterMedia
Analyze audio to find true peak level
audio-true-peak-meterMedia
Visualize stereo audio with a Lissajous vectorscope display
audio-vectorscope