Tools for API Developers

REST API Client

Send HTTP requests (GET, POST, PUT, DELETE) and inspect responses from your browser.

WebSocket Tester

Connect to WebSocket endpoints, send messages, and inspect frames.

HTTP Status Code Reference

Searchable reference of all HTTP status codes with descriptions and use cases.

Request Builder

Build HTTP requests interactively and generate code snippets in multiple languages.

curl to Fetch Converter

Convert curl commands to JavaScript fetch, Python requests, and more.

OpenAPI Validator

Validate OpenAPI 3.x and Swagger 2.0 specifications for correctness.

Mock API Generator

Generate mock API responses from JSON schemas for rapid development.

Docker → Compose

Convert docker run commands to docker-compose.yml format instantly.

Fake Data Generator

Generate realistic fake data including names, emails, phone numbers, addresses, and more.

JSON Formatter

Format, validate, and minify JSON with real-time syntax checking.

JSON Compare

Compare two JSON files side by side with real-time diff highlighting.

CSV to JSON Converter

Convert CSV data to JSON format with support for headers and custom delimiters.

YAML to JSON Converter

Convert YAML data to JSON format with support for complex nested structures.

JSON Validator

Validate JSON data and detect syntax errors with detailed error messages and line numbers.

JSON to TOML Converter

Convert JSON data to TOML format for configuration files.

JSON Schema Generator

Generate JSON Schema (draft-07) from sample JSON data automatically.

JSON to CSV Converter

Convert JSON arrays to CSV format with customizable delimiter, headers, and nested object flattening.

JSON Query Tool

Extract values from JSON using dot-notation and bracket-notation paths.

JSON to TypeScript

Convert JSON to TypeScript interfaces instantly. Generate typed interfaces from JSON samples for type-safe development.

JSON to Python

Convert JSON to Python dataclasses instantly. Generate typed Python classes from JSON samples for type-safe data handling.

JSON to Java

Convert JSON to Java POJO classes instantly. Generate Java records or classes with getters and fields from JSON samples.

JSON to C#

Convert JSON to C# classes instantly. Generate C# POCO classes with properties and attributes from JSON samples.

JSON to Go

Convert JSON to Go struct types instantly. Generate Go structs with JSON tags from JSON samples for Go development.

JSON to GraphQL

Convert JSON to GraphQL schema types instantly. Generate GraphQL type definitions from JSON samples for your API schema.

JSON to Rust

Convert JSON to Rust structs instantly. Generate type-safe Rust structs with Serde derive macros from JSON samples.

JSON to Swift

Convert JSON to Swift Codable structs instantly. Generate type-safe Swift structs with Codable conformance from JSON samples.

JSON ↔ XML Converter

Convert between JSON and XML formats bidirectionally.

JSON Path Tester

Test JSONPath expressions against JSON data and see matched results.

JSON Node Value Extractor

Extract all values of a specific key from JSON data. Enter a key name and get all matching values in a clean list for copy or download.

JWT Decoder

Decode and inspect JWT tokens instantly.

Password Generator

Generate strong, secure random passwords with customizable options.

UUID Generator

Generate UUID v4 identifiers instantly.

UUID Validator

Validate UUID strings and identify the version (v1, v2, v3, v4, v5).

Hash Generator

Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text.

JWT Generator

Generate signed JWT tokens for testing with custom headers and payloads.

Bcrypt Hash Generator

Generate bcrypt password hashes with configurable salt rounds.

API Key Generator

Generate cryptographically secure API keys in hex, base64, alphanumeric, and UUID formats.

HMAC Generator

Generate HMAC hashes with SHA-256, SHA-384, and SHA-512 algorithms.

AES Encrypt

Encrypt and decrypt text using AES-256-GCM with a password-based key.