JSON Formatter
PopularFormatters & Validators
Beautify minified JSON, catch syntax errors, and fix trailing commas.
Formatters & Validators
Format, beautify, and validate JSON, YAML, TOML, CSV, XML, SQL, HTML, CSS, and Markdown.
Formatters turn messy payloads into readable text. Debug a minified API response, clean a config file before a PR, or validate syntax before deploy — with immediate feedback in the browser.
Every formatter runs locally. Paste production-like data without worrying about uploads — nothing is sent to our servers.
- JSON, YAML, TOML, CSV, XML, SQL, HTML, and CSS formatting
- Syntax validation with clear error messages
- JSON repair, schema validation, and TypeScript type generation
Tools in this category
21JSON Minifier
Formatters & Validators
Minify JSON by removing whitespace and unnecessary characters.
JSON Validator
Formatters & Validators
Validate JSON syntax and get clear error messages.
JSON to YAML
Formatters & Validators
Convert JSON data to YAML format.
JSON to TypeScript
PopularFormatters & Validators
Infer TypeScript interfaces from sample JSON — a quick start for new API types.
YAML to JSON
Formatters & Validators
Convert YAML documents to JSON format.
TOML to JSON
Formatters & Validators
Convert TOML documents to JSON format.
JSON to TOML
Formatters & Validators
Convert JSON data to TOML format.
JSON to CSV
Formatters & Validators
Convert JSON arrays to CSV spreadsheets.
CSV to JSON
Formatters & Validators
Convert CSV data to JSON arrays.
XML Formatter
Formatters & Validators
Format and indent XML documents for readability.
SQL Formatter
Formatters & Validators
Format SQL queries with proper indentation and line breaks.
HTML Beautifier
Formatters & Validators
Beautify and indent HTML markup.
CSS Formatter
Formatters & Validators
Format CSS stylesheets with consistent indentation.
Markdown Preview
PopularFormatters & Validators
Render GitHub-flavored Markdown to HTML as you type.
YAML Formatter
Formatters & Validators
Format and validate YAML documents with consistent indentation.
GraphQL Formatter
Formatters & Validators
Format GraphQL queries, mutations, and fragments for readability.
Text Diff
Formatters & Validators
Compare two text blocks and highlight differences.
JSON Diff
PopularFormatters & Validators
Compare two JSON documents structurally, ignoring key order.
Patch Viewer
Formatters & Validators
Create, summarize, and apply unified diffs / patches in the browser.
JSON Schema Validator
Formatters & Validators
Validate JSON data against a JSON Schema.