Developer Tools Hub
Focused JSON, API, and developer utilities for validation, conversion, debugging, and content inspection.
JSON & API Tools
These tools are built for everyday API work: compare payloads, test JSONPath expressions, minify or escape JSON, convert between formats, and generate typed classes for backend code.
JSON Diff
Compare two JSON documents and highlight changed keys.
JSONPath Tester
Evaluate JSONPath expressions against live JSON input.
JSON Minifier
Minify or pretty-print JSON instantly.
JSON Escape / Unescape
Escape strings safely for JSON or reverse them.
JSON to Java POJO
Generate Java classes from JSON samples.
JSON to C# Classes
Generate strongly typed C# classes from JSON.
JSON to Python Dataclass
Create Python dataclasses from JSON objects.
YAML to JSON
Convert YAML configuration to JSON.
XML to JSON
Transform XML documents into JSON output.
Kubernetes YAML Validator
Check manifests for required Kubernetes fields.
OpenAPI Validator
Validate OpenAPI and Swagger specs.
cURL to Fetch
Convert cURL commands to JavaScript fetch code.
cURL to Python
Convert cURL commands to Python requests code.
HTTP Header Checker
Analyze security, cache, and CORS headers.
CORS Tester
Inspect CORS behavior and preflight requirements.
Developer Utilities
The remaining tools cover JWT decoding, HTTP request building, CSS generation, Dockerfile linting, and GraphQL formatting so the site stays useful for developers across frontend and backend workflows.
JWT Debugger
Decode and inspect JWT header and payload quickly.
API Client (Postman-like)
Send requests with headers, params, and form input.
HTTP Status Code Reference
Look up status code meaning and category.
CSS Gradient Generator
Create linear gradients and copy CSS.
CSS Box Shadow Generator
Generate box-shadow CSS values visually.
Favicon Generator
Generate a simple favicon from text and color.
.env Parser & Validator
Parse and validate environment variable files.
Dockerfile Linter
Run quick best-practice checks for Dockerfiles.
GraphQL Formatter
Format GraphQL queries and mutations.
About This Hub
This hub is organized around JSON and API workflows so search engines and users can quickly find the most relevant utility for the task at hand.
Open any tool card to run it instantly in the browser without installing extensions or libraries.