Tools
- JSON Formatter
Pretty-print and validate JSON.
- YAML ↔ JSON Converter
Convert between YAML and JSON.
- Base64 Encode / Decode
Encode or decode Base64, with full Unicode support.
- JWT Decoder
Inspect a JWT header and payload (decode-only, no verification).
- Timestamp / Epoch Converter
Convert between Unix epoch and ISO 8601.
- UUID Generator
Generate UUID v1, v4, v7, or nil UUIDs, in bulk, with custom formatting.
- Hash Generator
Hash text with MD5, SHA-1, SHA-256, or SHA-512 — or compute an HMAC-SHA256 with a secret key.
- JSON Diff Viewer
Compare two JSON payloads and see what changed.
- Cron Expression Explainer
Parse a cron expression and get a plain-English explanation.
- JWT Encoder
Build and sign an HS256 JSON Web Token from a header, payload, and secret.
- Regex Tester
Test a regular expression against sample text with match, group, and index details.
- Case Converter
Convert text between camelCase, snake_case, kebab-case, PascalCase, and more.
- URL Encoder / Decoder
Encode or decode URL components (percent-encoding).
- Color Picker
Convert colors between HEX, RGB, and HSL with a live swatch preview.
- SQL Formatter
Beautify SELECT, INSERT, UPDATE, and DELETE SQL statements.
- GraphQL Query Formatter
Pretty-print a GraphQL query, mutation, or fragment.
- OpenAPI / Swagger Validator
Validate an OpenAPI 3.0, 3.1, 3.2, or Swagger 2.0 document against the official schema, plus $ref and operationId checks.
- Protobuf Text ↔ JSON
Convert between Protocol Buffers text format and JSON.
- curl → fetch/axios
Convert a curl command into equivalent fetch or axios JavaScript code.
- CSV ↔ JSON Converter
Convert between CSV and JSON.
- XML ↔ JSON Converter
Convert between XML and JSON.
- Markdown to HTML Converter
Convert Markdown to HTML, with a live preview and PDF export.
- URL Parser & Query String Builder
Parse a URL into its parts, or build and decode a query string.
- Text Diff Checker
Compare two blocks of text line by line and see what changed.
- JSON Schema Generator & Validator
Generate a JSON Schema from sample JSON, or validate JSON data against a schema.
- .env File Formatter & Validator
Format and validate a .env file: sort keys, flag malformed lines and duplicate keys.
- Mock / Fake JSON Data Generator
Generate fake JSON data from a JSON Schema.
- XML Formatter
Beautify and re-indent XML, preserving comments and CDATA.
- JSON String Unescape / Escape
Unescape a double-encoded JSON string into real JSON, or escape text into a JSON string literal.
- Password Generator
Generate a cryptographically random password with configurable length and character sets.
- Cron Expression Generator
Build a cron expression from a plain-English schedule — the reverse of the cron explainer.
- Slug Generator
Convert any text into a URL-safe, diacritic-free slug for routes, filenames, or CMS entries.
- JSON to TypeScript
Paste one or more real JSON samples, get a TypeScript type inferred across all of them — powered by the same multi-sample engine behind Live Types.
- JSON to Zod
Paste one or more real JSON samples, get a Zod schema inferred across all of them — powered by the same multi-sample engine behind Live Types.
- JWT Secret Generator
Generate a cryptographically random secret for signing HS256 JWTs, in hex or base64url.