# help4.dev

> Free online tools for developers and testers. Generate and validate Brazilian and international identification documents (CPF, CNPJ, CNH, RG, SSN, EIN, etc.), plus developer utilities like Base64, UUID, JSON formatter, and more.

## Generators (Brazilian Documents)
- [CPF Generator](https://help4.dev/gerador-de-cpf): Generate valid CPF numbers for testing
- [CNPJ Generator](https://help4.dev/gerador-de-cnpj): Generate valid CNPJ numbers for testing
- [CNH Generator](https://help4.dev/gerador-de-cnh): Generate valid CNH numbers
- [RG Generator](https://help4.dev/gerador-de-rg): Generate valid RG numbers
- [PIS/PASEP Generator](https://help4.dev/gerador-de-pispasep): Generate valid PIS/PASEP numbers
- [RENAVAM Generator](https://help4.dev/gerador-de-renavam): Generate valid RENAVAM numbers
- [Chassi Generator](https://help4.dev/gerador-de-chassi): Generate valid chassis numbers
- [Certidoes Generator](https://help4.dev/gerador-de-certidoes): Generate valid certificate numbers
- [CNS Generator](https://help4.dev/gerador-de-cns): Generate valid CNS numbers
- [Titulo Eleitor Generator](https://help4.dev/gerador-titulo-eleitor): Generate valid voter title numbers
- [Credit Card Generator](https://help4.dev/gerador-cartao-credito): Generate valid credit card numbers for testing
- [Phone Generator](https://help4.dev/gerador-de-celular): Generate valid cell phone numbers
- [AIH Generator](https://help4.dev/gerador-aih): Generate valid AIH numbers
- [NIF Generator](https://help4.dev/gerador-nif): Generate valid NIF numbers
- [Passport Generator](https://help4.dev/gerador-passaporte): Generate valid passport numbers
- [Person Generator](https://help4.dev/gerador-de-pessoa): Generate complete fictional person data
- [Company Generator](https://help4.dev/gerador-de-empresa): Generate complete fictional company data
- [Address Generator](https://help4.dev/gerador-de-endereco): Generate fictional addresses
- [State Registration Generator](https://help4.dev/gerador-de-inscricao-estadual): Generate valid state registration numbers

## Validators (Brazilian Documents)
- [CPF Validator](https://help4.dev/validador-de-cpf): Validate CPF numbers
- [CNPJ Validator](https://help4.dev/validador-de-cnpj): Validate CNPJ numbers
- [CNH Validator](https://help4.dev/validador-de-cnh): Validate CNH numbers
- [RG Validator](https://help4.dev/validador-de-rg): Validate RG numbers
- [RENAVAM Validator](https://help4.dev/validador-de-renavam): Validate RENAVAM numbers
- [Chassi Validator](https://help4.dev/validador-de-chassi): Validate chassis numbers

## International Documents
- [SSN Generator (USA)](https://help4.dev/gerador-de-ssn): Generate valid SSN numbers
- [EIN Generator (USA)](https://help4.dev/gerador-de-ein): Generate valid EIN numbers
- [SIN Generator (Canada)](https://help4.dev/gerador-de-sin): Generate valid SIN numbers
- [CURP Generator (Mexico)](https://help4.dev/gerador-de-curp): Generate valid CURP numbers
- [RFC Generator (Mexico)](https://help4.dev/gerador-de-rfc): Generate valid RFC numbers
- [DNI Generator (Argentina)](https://help4.dev/gerador-de-dni-argentina): Generate valid DNI numbers
- [RUT Generator (Chile)](https://help4.dev/gerador-de-rut): Generate valid RUT numbers
- [DNI Generator (Spain)](https://help4.dev/gerador-de-dni-espanha): Generate valid Spanish DNI numbers
- [NINO Generator (UK)](https://help4.dev/gerador-de-nino): Generate valid NINO numbers
- [Codice Fiscale Generator (Italy)](https://help4.dev/gerador-de-codice-fiscale): Generate valid Codice Fiscale
- [Steuer-ID Generator (Germany)](https://help4.dev/gerador-de-steuer-id): Generate valid Steuer-ID
- [NIR Generator (France)](https://help4.dev/gerador-de-nir): Generate valid NIR numbers

## Developer Tools
- [Base64 Encoder/Decoder](https://help4.dev/base64): Encode and decode Base64
- [MD5 Hash Generator](https://help4.dev/md5-hash): Generate MD5 hashes
- [SHA Hash Generator](https://help4.dev/sha-hash): Generate SHA hashes
- [UUID Generator](https://help4.dev/gerador-de-uuid): Generate UUIDs
- [JSON Formatter](https://help4.dev/formatador-json): Format and validate JSON
- [URL Encoder/Decoder](https://help4.dev/url-encode-decode): Encode and decode URLs
- [HTML Encoder/Decoder](https://help4.dev/html-encode-decode): Encode and decode HTML entities
- [Regex Tester](https://help4.dev/testador-regex): Test regular expressions
- [Password Generator](https://help4.dev/gerador-de-senhas): Generate secure passwords
- [Timestamp Converter](https://help4.dev/conversor-timestamp): Convert timestamps
- [Text Case Converter](https://help4.dev/conversor-de-texto): Convert text case
- [Character Counter](https://help4.dev/contador-de-caracteres): Count characters in text
- [Slug Generator](https://help4.dev/gerador-de-slug): Generate URL slugs
- [Accent Remover](https://help4.dev/removedor-de-acentos): Remove accents from text
- [Color Picker](https://help4.dev/seletor-de-cores): Pick and convert colors
- [QR Code Generator](https://help4.dev/gerador-qr-code): Generate QR codes
- [Barcode Generator](https://help4.dev/gerador-codigo-barras): Generate barcodes
- [Code Formatter](https://help4.dev/formatador-de-codigo): Format source code
- [Code Minifier](https://help4.dev/minificador-de-codigo): Minify source code

## Languages
- Portuguese (default): https://help4.dev
- English: https://help4.dev/en
- Spanish: https://help4.dev/es