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Format, encode, decode, validate and generate in seconds. Free, private and built for developers.
{"id":1,"name":"Sam","tags":["a","b"]}{
"id": 1,
"name": "Sam",
"tags": ["a", "b"]
}Format and beautify messy JSON instantly
Encode or decode Base64 with UTF-8 support
Inspect JWT header, payload and expiry
Live regex matching with capture groups
Generate unique v4 UUIDs in bulk
MD5, SHA-1, SHA-256 and SHA-512 hashes
Safely encode and decode URL strings
Compare two texts and see differences
Unix epoch to human-readable dates
Beautify SQL queries with clean indentation
Format and beautify messy JSON instantly
Validate JSON and pinpoint errors by line
Minify JSON for production payloads
Turn JSON into TypeScript interfaces
Convert JSON arrays into CSV files
Convert YAML configs to JSON and back
Convert XML documents to clean JSON
Encode or decode Base64 with UTF-8 support
Safely encode and decode URL strings
Inspect JWT header, payload and expiry
Encode and decode HTML special characters
Convert text to hex and hex to text
Text to Unicode escapes and back
Convert binary code to readable text
Beautify SQL queries with clean indentation
Format and indent messy HTML markup
Compress CSS and shave off bytes
Minify JS for faster page loads
Pretty-print XML with proper nesting
Write Markdown and preview it live
Validate YAML syntax before you deploy
Generate unique v4 UUIDs in bulk
Create strong, random passwords
MD5, SHA-1, SHA-256 and SHA-512 hashes
Hash and verify passwords with bcrypt
Create HMAC signatures with a secret key
Generate placeholder text for layouts
Create QR codes for links and text
Live regex matching with capture groups
Send HTTP requests and inspect responses
Compare two texts and see differences
Query JSON with JSONPath expressions
Build and explain cron schedules
Quick reference for every status code
Decode browser and device from UA string
Design CSS gradients and copy the code
Tune box-shadows with a live preview
HEX, RGB, HSL and more in one place
Experiment with flexbox visually
Generate SEO and social meta tags
Create favicons for every device
Preview how links look when shared
Unix epoch to human-readable dates
camelCase, snake_case, kebab-case & more
Count words, characters and reading time
Binary, octal, decimal and hex
Work out Linux file permissions
Turn titles into clean URL slugs
Count tokens for GPT, Claude and more
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Copy to clipboard or save the result.
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Format, decode and validate as you type, with zero waiting.
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50+ essential dev tools, free for everyone, forever.