Formatter

These tools tidy up config files and API responses so you can read them, and move them between formats. They format and minify JSON, XML, YAML, TOML, and SQL, convert to and from JSON Lines and XML, break a URL into its parts, generate TypeScript type definitions and Go structs from JSON, and diff two JSON documents.

JSON Formatter

Format, minify, and validate JSON. Choose an indent level to pretty-print for readability, or compress to a single line. Syntax errors are highlighted instantly.

SQL Formatter

Format SQL text for better readability.

URL Parser

Enter a URL to break it down into protocol, host, path, query parameters, and fragment. Tracking parameters such as utm_source are automatically detected.

JSON Lines (JSONL) ⇔ JSON Array Converter

Convert between JSON Lines format — one JSON object per line — and a standard JSON array. Handy for checking machine learning datasets and log output.

JSON to TypeScript Type Converter

Paste a JSON object (or JSON array) to automatically generate the corresponding TypeScript interface/type definitions.

JSON to Go Struct Converter

Paste a JSON object (or JSON array) to automatically generate the corresponding Go struct definitions with json tags.

XML Formatter

Pretty-print, minify, and validate XML on the spot — check for well-formedness errors instantly. Also handy for inspecting SOAP/REST API responses and RSS/Atom feeds.

YAML Formatter

Format YAML with a consistent indent width, or convert it to JSON. Detects tab characters and inconsistent indentation.

TOML Formatter

Format and validate TOML (Tom's Obvious, Minimal Language). Neatly aligns key = value pairs, tables, and arrays, and reports syntax errors with line numbers.

YAML to JSON Converter

Convert YAML data to JSON. Instantly turn structures written in YAML — Kubernetes manifests, docker-compose.yml, CI config files — into a format that JSON-only tools like jq can work with, right in your browser.

Go Struct to JSON Sample Generator

Paste a Go struct definition with json tags to automatically generate matching sample JSON data. Supports nested structs, slices, omitempty, and json:"-", handy for API mocks and Postman examples.

JSON Diff Checker

Compare two JSON documents and instantly see which keys were added, removed, or changed, listed by key path. Objects and arrays are walked recursively, and even type mismatches are reported as changes. Everything runs in...

XML to JSON Converter

Convert XML data to JSON. Turn legacy XML API responses, SOAP payloads, or RSS/Atom feeds into JSON — attributes go under @attributes, text under #text, repeated elements become arrays — right in your browser.

JSON to XML Converter

Convert JSON data to XML. @attributes becomes element attributes, #text becomes text content, and arrays become repeated sibling elements — the reverse of our XML-to-JSON converter, right in your browser.