MyJson (myjson.in) is a free collection of 11 online developer tools for working with JSON and text: format, validate, sort, compare, extract keys, convert to CSV/XML/YAML/Base64, stringify, format SQL, and compare any two plain text files with a visual diff. All processing is 100% client-side — no data ever leaves your browser.

Is MyJson free to use?

Yes, MyJson is completely free. No signup, no login, no credit card required. All 11 tools are free forever.

Is my JSON data safe and private?

Yes. MyJson is 100% client-side — all processing happens locally in your browser using JavaScript. No data is ever sent to a server or stored anywhere.

How do I validate JSON online?

Paste your JSON into the Format JSON tool on myjson.in. Invalid JSON is highlighted immediately with a clear error message showing exactly where the syntax error is.

How do I compare two JSON files online?

Open the Compare JSON tool on myjson.in, paste the first JSON in the Left panel and the second in the Right panel. A side-by-side diff view highlights all differences. Use the ▲/▼ arrows to jump between each mismatch.

How do I minify JSON online?

Open the Format JSON tool on myjson.in and toggle the Minify option. Your JSON will be collapsed into a single compact line with all whitespace removed.

How do I convert JSON to CSV?

Paste your JSON array into the JSON to CSV tool on myjson.in. It supports comma, semicolon, and tab delimiters, optional header rows, and automatic flattening of nested objects using dot notation.

How do I convert JSON to YAML?

Paste your JSON into the JSON to YAML tool on myjson.in. It converts JSON to clean YAML block syntax with proper quoting and type handling. You can also reverse this — convert YAML back to JSON.

How do I format SQL queries online?

Paste your SQL into the SQL Formatter tool on myjson.in. It beautifies SQL with proper indentation, lets you choose UPPER or lower keyword casing, remove comments, or minify the query to a single line.

How do I compare two text files online?

Open the Text Compare tool on myjson.in, paste the first text in the Left panel and the second in the Right panel. A side-by-side visual diff highlights all differences. Use options to ignore case or whitespace, and navigate between diff blocks with the ▲/▼ arrows.

What tools does MyJson offer?

MyJson offers 11 free tools: JSON formatter (beautify, minify, validate), JSON compare (visual diff with mismatch navigation), JSON sort (ascending/descending), JSON key extractor, JSON to CSV, JSON to XML, JSON to YAML, JSON to Base64 encode/decode, JSON stringify (escape/unescape), SQL formatter (keyword casing, comment removal, minify), and Text Compare (plain text visual diff).

Does MyJson work offline?

Yes. Once loaded, all MyJson tools work entirely in your browser without an internet connection. No server calls are made for any processing.

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MyJson — Free Online JSON Tools

Format, validate, compare, sort and convert JSON — plus a SQL formatter and text compare. 11 free browser-based tools. No signup. 100% private.

100% Free No Signup 100% Client-Side 11 Tools

Please enable JavaScript to use MyJson. All processing happens in your browser — no data is sent to any server.

All JSON Tools

JSON Formatter & Beautifier

Format, beautify and pretty-print JSON online. Choose 2, 4, or 8 space indentation. Validates JSON and highlights syntax errors instantly.

JSON Compare — Visual Diff

Compare two JSON files side-by-side with a visual diff. Navigate directly to each mismatch with ▲/▼ arrows. Control comparison depth and sort keys.

JSON Minifier

Minify JSON to a compact single line, removing all unnecessary whitespace. Ideal for reducing payload size in APIs and configs.

JSON Validator

Validate JSON syntax online instantly. Errors are highlighted with clear messages showing the exact line and position of the problem.

JSON Sort — Sort Keys

Sort JSON object keys alphabetically — ascending or descending. Supports recursive sorting of all nested objects.

JSON Key Extractor

Extract all keys from a JSON document at a specific depth level. View keys with full dot-notation paths. Deduplicate and export as JSON or plain text.

JSON to CSV Converter

Convert JSON arrays to CSV format. Choose comma, semicolon, or tab delimiter. Supports header rows and automatic flattening of nested objects.

JSON to YAML Converter

Convert JSON to YAML with clean block syntax. Handles all data types correctly. Also supports YAML to JSON conversion.

JSON to XML Converter

Convert JSON to well-formed XML. Set a custom root element name and choose indentation. Also converts XML back to JSON.

JSON Base64 Encode / Decode

Encode JSON to Base64 and decode Base64 back to formatted JSON. Useful for JWT payloads, API tokens, and data transfer.

JSON Stringify / Parse

Convert JSON to an escaped string literal (like JSON.stringify) and parse it back to formatted JSON. Essential for debugging string-encoded JSON.

SQL Formatter

Format and beautify SQL queries online. Choose UPPER or lower keyword casing, remove comments, or minify SQL to a single line. Supports CREATE TABLE, SELECT, INSERT, and more.

Text Compare — Visual Diff

Compare any two plain text files side-by-side with a visual diff. Ignore case or whitespace differences. Navigate between each mismatch block.

Why Use MyJson?

100% free — no hidden plans or paywalls
No signup or login required
All processing happens in your browser
No data ever sent to any server
Works offline once loaded
11 tools in one place
Shared JSON buffer — paste once, use in any tool
Monaco editor with syntax highlighting
Dark and light mode
Mobile-friendly responsive design
JSON to CSV, XML, YAML, Base64 conversion
Visual JSON diff with mismatch navigation
SQL formatter with keyword casing
JSON key extraction with dot-path support
Duplicate key detection and removal
Recursive key sorting

Frequently Asked Questions

How do I format JSON online?

Visit myjson.in, click Format JSON, paste your JSON, and it is instantly beautified with syntax highlighting.

How do I compare two JSON files?

Open the Compare JSON tool, paste each JSON into the Left and Right panels, and differences are highlighted in a side-by-side diff view.

Is MyJson free?

Yes — all 11 tools are completely free, no account needed. MyJson is 100% client-side so your data never leaves your browser.