Desenvolvedor
JSON, Base64, hashing e utilitários para desenvolvedores
Free developer utilities for JSON, encoding, hashing, JWT, SQL, CSS, and HTTP debugging. Most tools run locally in your browser so secrets and sample payloads stay on your device.
JSON & data formats
Format, compare, validate, and convert structured data.
Formatador JSON
Format and validate JSON data
Comparador JSON
Compare two JSON documents by structure, ignoring key order and formatting
Validador de Esquema JSON
Validate JSON data against a JSON Schema
Gerador de Esquema JSON
Generate a JSON Schema from sample JSON data
Formatador YAML
Format and validate YAML documents
YAML ⇄ JSON
Convert between YAML and JSON formats
TOML ⇄ JSON
Convert between TOML and JSON formats
JSON ⇄ XML
Convert between JSON and XML formats
Formatador XML
Format, validate and minify XML documents
JSON para Código
Generate TypeScript, C# or Java classes from sample JSON
Gerador de Dados Fictícios
Generate realistic fake names, emails and addresses as CSV or JSON
Encode, hash & tokens
Base64, HTML entities, hashes, JWT, and UUID helpers.
Codificador Base64
Encode and decode Base64 strings
Codificador HTML
Encode and decode HTML entities
Hash MD5
Generate MD5 hash from text or files
Hash SHA-256
Generate SHA-256 hash from text or files
Hash BCrypt
Generate and verify BCrypt hashes
Hash Argon2
Generate and verify Argon2 hashes
Decodificador JWT
Decode and inspect JWT tokens
Codificador JWT
Encode and sign JWTs with HS/RS/ES/PS algorithms in the browser
Gerador de UUID
Generate unique UUIDs/GUIDs
Conversor Hexadecimal
Convert between hex, decimal and binary
Gerador de Chaves Secretas e Senhas
Generate cryptographically random API keys, UUIDs, hex and base64 secrets
Code format & minify
Beautify or minify JS, HTML, CSS, SQL, and TypeScript.
Formatador de JavaScript
Format messy or minified JavaScript into clean readable code
Minificador / Formatador de JavaScript
Minify or beautify JavaScript code
Minificador de HTML
Minify or beautify HTML including inline CSS and JavaScript
Minificador / Formatador de CSS
Minify or beautify CSS code
Formatador TypeScript
Format and beautify TypeScript code
Formatador SQL
Format and beautify SQL queries
Gerador de Consultas SQL
Visually build SELECT, INSERT, UPDATE and DELETE queries
Testador de Regex
Test regular expressions with highlighting
Comparador de Diferenças
Compare two texts and find differences
CSS & color tools
Gradients, shadows, radius, contrast, and color conversion.
Gerador de Gradientes CSS
Visually build CSS gradients
Gerador de Sombras CSS
Visually build CSS box-shadows
Gerador de Bordas Arredondadas CSS
Visually build CSS border-radius
Verificador de Contraste de Cor
Check WCAG accessibility compliance
Conversor de RGB para HEX
Drag RGB sliders and get HEX, HSL, HSV and CMYK live
Conversor de HEX para RGB
Convert HEX to RGB, RGBA, HSL, HSV, CMYK and decimal with live preview
HTTP & APIs
Inspect URLs, headers, and craft API requests.
Testador de API
Send HTTP requests to any REST API and inspect the response - works with public endpoints and your localhost dev server
Gerador de Curl
Build a correctly quoted curl command from a form, updating as you type
Visualizador de Cabeçalhos HTTP
Fetch a URL and inspect its response headers
Analisador de URL
Parse and analyze URL components
Gerador de Cron
Generate cron expressions visually
Editor com Pré-visualização HTML
Live HTML/CSS/JS playground
Captura de Trecho de Código
Turn code or a quote into a windowed image you can post
Frequently asked questions
Most formatter, encoder, JWT, and hash tools run entirely in your browser. A few network tools (API request builder, header viewer) must contact the URL you ask them to, by design.
Yes. Format, validate, and beautify JSON online with no signup required.
The JWT Decoder inspects header and payload in your browser. Never paste production secrets into any online tool you do not trust; prefer local decoding for highly sensitive tokens.
Use JSON Compare for structure-aware diffs, or Diff Checker for raw text comparison.