Cryptography
Validate password against PBKDF2 derived key
pbkdf2-validatorGames
Draw random playing cards from a standard deck
random-cardGenerator
Generate random strings with customizable character sets, length, and patterns
random-string-generatorFormat Conversion
Encrypt and decrypt text using RC4 stream cipher with a key
rc4-encryptorGenerator
Generate random numbers with various distributions
random-number-generatorDevelopment
Generate Open Graph meta tags for social media sharing and rich snippets
open-graph-generatorSecurity
Validate password strength and check against common security requirements
password-validatorDate & Time
Generate recurring dates based on a pattern
recurring-event-generatorMath & Numbers
Generate Pascal's triangle with customizable number of rows
pascals-triangleMath & Numbers
Perform arithmetic operations on fractions
rational-calculatorFormat Conversion
Decode Quoted-Printable format to plain text
quoted-printable-decoderFormat Conversion
Encode text to Quoted-Printable format (used in email MIME)
quoted-printable-encoder