Online tools · US
4devskit
Generate and validate US documents in seconds. Fast, free, and 100% in your browser — ideal for development and testing.
11 generators7 validators
Generators
- SSN GeneratorGenerate valid-format Social Security Numbers for software testing.
- EIN GeneratorGenerate Employer Identification Numbers (EIN/FEIN) with valid format.
- ZIP Code GeneratorGenerate US ZIP and ZIP+4 codes for forms and mocks.
- VIN GeneratorGenerate 17-character Vehicle Identification Numbers with check digit.
- US Phone GeneratorGenerate North American phone numbers in common formats.
- Credit Card GeneratorGenerate fictional cards that pass the Luhn check.
- Password GeneratorGenerate strong passwords with composition options.
- Random Number GeneratorDraw random numbers with range and quantity controls.
- Lorem Ipsum GeneratorGenerate placeholder text for layouts and mockups.
- Fancy Text GeneratorConvert text into Unicode fancy styles.
- Symbols to CopyCopy arrows, currency signs, and special characters.
Validators
- SSN ValidatorCheck if an SSN matches SSA formatting rules.
- EIN ValidatorValidate Employer Identification Number format.
- ZIP Code ValidatorValidate US ZIP and ZIP+4 formats.
- VIN ValidatorValidate VIN length, characters, and check digit.
- US Phone ValidatorValidate North American Numbering Plan phone numbers.
- Credit Card ValidatorValidate cards with Luhn and detect the brand.
- Password Strength CheckerRate password strength as weak, medium, or strong.