Code Tools
Convert JSON to TypeScript, Go, Python, C#, and Java types. Format SQL, convert cURL commands to code, parse cron expressions, build JWTs, and transform code between formats. Essential tools for backend and full-stack developers.
Define a JSON schema and generate realistic mock API responses.
Generate a CHANGELOG.md following the Keep a Changelog format.
Minify JavaScript, CSS, and HTML by removing whitespace and comments.
Generate a CONTRIBUTING.md template for your open-source project.
Parse cron expressions and see next execution times in plain English.
Map common CSS properties to approximate Tailwind CSS utility classes.
Convert a cURL command to Python, JavaScript, Go, and PHP code.
Parse, edit, and export .env files in a key-value table.
Format and prettify GraphQL queries, mutations, and fragments.
Minify GraphQL queries by removing comments and collapsing whitespace.
Build GraphQL queries and mutations visually with live query string preview.
Convert HTML markup to valid JSX for React components.
Convert JSON to C# classes with auto-implemented properties.
Convert JSON to Go struct definitions with json tags.
Convert JSON to Java classes with private fields and getters/setters.
Convert JSON to Python dataclasses with type hints.
Convert JSON to TypeScript interfaces with proper type inference.
Build and sign JWTs with HS256 using the Web Crypto API.
Browse open-source licenses and generate the full license text for your project.
Generate a well-structured README.md from a simple form.
Explain a regular expression pattern in plain English.
Format and beautify SQL queries with proper indentation and uppercase keywords.
Convert SQL SELECT queries to MongoDB find() syntax.
FAQ
- How does JSON to TypeScript work?
- Paste JSON and the tool analyzes the structure, infers types for each field, and generates a TypeScript interface with proper typing for nested objects and arrays.
- Which languages are supported for JSON conversion?
- TypeScript, Go structs, Python dataclasses, C# classes, and Java classes. Each generator follows the idiomatic patterns of the target language.
- Can I convert cURL commands to code?
- Yes. Paste a cURL command and get equivalent code in Python (requests), JavaScript (fetch), Go (net/http), and PHP (curl).