Small tools. Big productivity.
DevNibble is a fast, private collection of developer utilities that nibble away the complexity of everyday tasks — JSON, encoding, converters, formatters and more.
Fast
Instant results with optimized browser-based processing.
Read the story →Private
Your data stays in your browser. Nothing is uploaded.
Learn more →366+ Tools
Formatting, conversion, encoding, validation and more.
Explore →Dark Mode
Designed for developers working day and night.
Keyboard Friendly
Navigate tools quickly with keyboard shortcuts.
View shortcuts →Interesting tools
A fresh selection every time you visit.
JSON Formatter
Beautify and format JSON with proper indentation.
JSON Validator
Validate JSON syntax with clear error locations.
JSON Diff
Compare two JSON documents line by line.
Base64 Encoder
Encode text to Base64.
JWT Decoder
Decode and inspect JWT header and payload.
SQL Formatter
Format and beautify SQL queries.
Regex Tester
Test regular expressions with live match highlighting.
UUID Generator
Generate RFC-4122 version 4 UUIDs.
URL Encoder
Percent-encode text for URLs.
Timestamp Converter
Convert between Unix timestamps and human dates.
XML Formatter
Pretty-print and indent XML documents.
YAML Formatter
Normalize and re-indent YAML.
Everything you need, in one place.
A growing collection of practical tools for developers, data and the web.