169+ All tools are completely free to use, no registration required

JsonKitFree Online Developer Tools

169+ tools for JSON formatting, Base64 encoding, hashing, regex testing, QR codes, and more — all processed locally in your browser.

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Secure & Private
Modern Design
Responsive Layout
JSON FormatterFormat, validate & beautify JSON onlineBase64 Encode/DecodeEncode/decode Base64 text and filesTimestamp ConverterConvert Unix timestamps to datesQR Code GeneratorGenerate QR codes for URLs and textRegex TesterTest regular expressions in real-timeColor ConverterConvert between color formatsRandom PasswordGenerate secure random passwordsText DiffCompare and diff text online

JSON Formatter

Format, validate, and edit JSON with our powerful online editor

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Input0 lines | 0 characters | 0 B
Paste JSON data here, or click "Example" to load a sample...
Output

All Tools

Powerful online tools to boost your productivity

JSON

JSON Formatter
Format, validate & beautify JSON online
JSON Validator
Validate JSON syntax with error highlighting
JSON Minifier
Compress JSON to minimal size
JSON Converter
Convert JSON to/from XML, YAML, CSV
JSON Diff
Compare two JSON documents side-by-side
JSONPath Query
Query JSON data with JSONPath expressions
JSON Tree EditorNEW
Edit JSON with a visual tree interface

Encryption Tools

Base64 Encode/Decode
Base64 encode/decode text and files
URL Encode/Decode
URL encode/decode special characters
SHA Hash
Generate SHA-1, SHA-256, SHA-512 hashes
JWT Decoder
Decode JWT tokens and inspect payload
HTML Entity Encode/Decode
HTML entity encode/decode characters
String Escape
Escape/unescape special characters in strings
cURL ConverterNEW
Convert cURL commands to code

Developer Tools

Timestamp Converter
Convert Unix timestamps to readable dates
Timestamp Batch ConverterNEW
Convert multiple timestamps at once
Regex Tester
Test regular expressions in real-time
QR Code Generator
Generate QR codes for URLs, text, WiFi
UUID Generator
Generate UUID/GUID identifiers
Cron Generator
Build and test cron expressions
Color Converter
Convert between HEX, RGB, HSL formats
Color Contrast CheckerNEW
Check color contrast ratios for WCAG
IP CalculatorNEW
Calculate IP ranges and subnet masks
WebSocket TesterNEW
Test WebSocket connections in real-time

Text Tools

Text Diff
Compare and diff text side-by-side
Text Replace
Find and replace text with regex support
Line Sort
Sort lines alphabetically or numerically
Text Deduplicate
Remove duplicate lines from text
Word Count
Count words, characters, and lines
Case Converter
Convert text case: upper, lower, title, camel

Image Tools

Image Compress
Compress JPEG and PNG images
Image to Base64
Convert images to Base64 data URIs
QR Code Generator
Generate QR codes for URLs, text, WiFi
Barcode Generator
Generate barcodes for products and codes
Image to Text (OCR)
Extract text from images with OCR
App Store Screenshots
Generate app store screenshots

Developer Tools

Code Formatter
Beautify source code with proper indentation
Code MinifierNEW
Minify HTML, CSS, and JavaScript code
SQL Formatter
Format SQL queries with syntax highlighting
HTML Formatter
Format and beautify HTML markup
CSS Formatter
Format and beautify CSS stylesheets
JavaScript Formatter
Format and beautify JavaScript code
XML Formatter
Format and beautify XML documents
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Why Choose JsonKit

100% Free

All tools are completely free to use, no registration required

Secure & Private

All data is processed locally in your browser, never uploaded to servers

Lightning Fast

Optimized for performance, get results instantly

Easy to Use

Clean and intuitive interface, no learning curve

169+
Developer Tools
100%
Completely Free
0
No Sign-up Required
Local Processing