JSON Formatter JSON Validator JSON Minifier JSON Diff JSON to CSV JSON to YAML JSON Sort Keys JSON Viewer JSON Escape/Unescape JSON to XML XML to JSON YAML to JSON JSON to TypeScript JSON to PHP Array JSON Stringify See all JSON tools →
CSV to SQL CSV to Markdown CSV Diff CSV to JSON CSV to XML CSV Deduplicator See all CSV tools →
Sort & Dedupe Lines Slug Generator Case Converter Character & Word Counter Text Diff Regex Tester Find & Replace Reverse Text Text Repeater Remove Duplicate Lines Whitespace Remover Remove Line Breaks Morse Code Translator ROT13 / Caesar Cipher NATO Phonetic Alphabet LLM Token Counter Word Frequency Counter Add Line Numbers Remove Accents Strip HTML Tags Extract Emails Extract URLs Remove Emojis Count Occurrences Remove Extra Blank Lines Remove Duplicate Words Word Wrap See all Text tools →
URL Parser HTML Entity Encoder HTML Entity Decoder Base64 Encoder Base64 Decoder URL Encoder URL Decoder JWT Decoder JWT Encoder Text to Hex Hex to Text Text to Binary Binary to Text Base32 Encode Base32 Decode User Agent Parser HTTP Status Codes MIME Type Lookup See all Encoding tools →
Hash Generator MD5 Hash Generator SHA-256 Hash Generator SHA-512 Hash Generator SHA-1 Hash Generator HMAC Generator See all Hash tools →
Markdown to HTML HTML Formatter XML Formatter SQL Formatter YAML Formatter CSS Formatter CSS Minifier JavaScript Formatter See all Formatters tools →
PX to REM Converter Data Size Converter Unix Timestamp Converter Number Base Converter Roman Numeral Converter Temperature Converter Length Converter Weight Converter Speed Converter Area Converter Volume Converter Time Duration Converter Angle Converter Pressure Converter Energy Converter Number to Words Cron Expression Parser Percentage Calculator Aspect Ratio Calculator Average Calculator Hex to Binary Binary to Hex Hex to Decimal Decimal to Hex Binary to Decimal Decimal to Binary Kilometers to Miles Miles to Kilometers Centimeters to Inches Inches to Centimeters Feet to Meters Meters to Feet Celsius to Fahrenheit Fahrenheit to Celsius Kilograms to Pounds Pounds to Kilograms MPH to KM/H KM/H to MPH See all Converters tools →
Color Converter Color Contrast Checker UUID Generator Lorem Ipsum Generator Password Generator Passphrase Generator Username Generator CSS Gradient Generator Box Shadow Generator Color Palette Generator Cubic Bezier Generator QR Code Generator Meta Tag Generator Border Radius Generator Glassmorphism Generator SVG Blob Generator Placeholder Image Generator See all Generators tools →
Guides Pricing
● JSON · 15 tools

JSON Tools Online

Format, validate, minify and diff JSON — plus convert it to CSV, YAML, XML or TypeScript. Every tool runs in your browser: no uploads, no sign-up, no limits.

15 free tools free forever runs in browser
QUICK FORMAT open full tool →
{"name":"snaptools","tags":["json","free"]}
RESULT ✓ 
{
  "name": "snaptools",
  "tags": ["json", "free"]
}

↳ act on the page: the flagship tool is one paste away — no second click to get value.

What do you want to do?

Clean up messy JSON JSON Formatter → Check if it's valid JSON Validator → Compare two payloads JSON Diff → Shrink it for production JSON Minifier →

Most used

start here
J JSON Formatter
Format and beautify JSON online for free. Paste your JSON to get...
J JSON Validator
Validate JSON online instantly. Check your JSON for syntax error...
J JSON Viewer
View and explore JSON online for free in an interactive, collaps...

All JSON tools

12 more
JSON Minifier JSON Diff JSON to CSV JSON to YAML JSON Sort Keys JSON Escape/Unescape JSON to XML XML to JSON YAML to JSON JSON to TypeScript JSON to PHP Array JSON Stringify

Format vs. minify vs. validate — which do you need?

TOOL USE WHEN RESULT
JSON Formatter You need to read or debug it Indented, readable
JSON Minifier Shipping it over the wire Smallest bytes
JSON Validator An API is rejecting it Error + line number

JSON guides

Guide

JSON vs YAML: which to use for config

 Guide

How to compare two JSON objects

 Guide

How to convert JSON to CSV (including nested data)

JSON tools FAQ

SnapTools includes JSON Formatter (beautify with custom indentation), JSON Validator (check syntax errors with line numbers), JSON Minifier (strip whitespace to reduce size), JSON Diff (compare two JSON objects), JSON Viewer (explore a live tree), and converters for CSV, YAML, XML and TypeScript.
Yes, all JSON tools on SnapTools are completely free with no registration required. Open any tool, paste your JSON, and get results instantly.
Files up to tens of MB work smoothly; everything is processed locally in your browser so there is no upload limit. For batch processing, use the SnapTools API.
Yes — nothing is uploaded. All parsing happens in your browser and is never stored, logged, or shared.

Related categories

CSV · 6 Convert, diff & dedupe CSV files. Encoding · 18 Base64, JWT, URL & entity encoders. Formatters · 8 Pretty-print SQL, HTML, CSS, XML.
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