All Developer Tools in
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JSON formatter, Base64 encoder, Regex tester, XML converter, QR generator, and 35+ more tools. No login. No uploads. Runs entirely in your browser.
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Popular Tools
JSON Formatter
Beautify, minify and validate JSON with syntax highlighting
XML Formatter
Format and pretty print XML documents with indentation control
CSS Formatter & Minifier
Beautify or minify CSS stylesheets with configurable indentation
JSON Validator
Validate JSON syntax and structure with detailed error reporting
Regex Tester
Test and debug regular expressions with live match highlighting
JSON to XML Converter
Convert JSON data to XML format with custom root element support
YAML to JSON Converter
Convert YAML files and strings to JSON format with full YAML 1.2 support
CSV to JSON Converter
Convert CSV files to JSON arrays with custom delimiter support
Epoch Timestamp Converter
Convert Unix epoch timestamps to human readable dates and vice versa
Base64 Encoder / Decoder
Encode and decode Base64 strings, files, and binary data online
URL Encoder / Decoder
Encode and decode URLs and query strings with percent-encoding support
Hash Generator
Generate SHA-1, SHA-256, SHA-384, SHA-512 hashes using Web Crypto API
URL Parser
Break down any URL into protocol, hostname, path, query parameters and hash
QR Code Generator
Generate QR codes from text, URLs or any data with custom styling
Why FullDevKit?
Built for developers who need instant, reliable tools without friction. Every tool is optimized for speed, accuracy, and a clean developer experience.
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Every tool runs locally in your browser. Your sensitive data — API keys, credentials, configs — never touches a server.
Instant Live Results
Results update as you type. No submit buttons, no page loads, no waiting. Powered by modern browser APIs.
Production Grade
Accurate implementations for JSON, XML, Base64, hashing, QR codes, and more. Trusted by developers worldwide.
All Tools
JSON Formatter
Beautify, minify and validate JSON with syntax highlighting
XML Formatter
Format and pretty print XML documents with indentation control
CSS Formatter & Minifier
Beautify or minify CSS stylesheets with configurable indentation
HTML Formatter
Beautify and pretty-print HTML documents with proper indentation
JavaScript Formatter & Minifier
Beautify or minify JavaScript code for readability or production
JSON Validator
Validate JSON syntax and structure with detailed error reporting
XML Validator
Validate XML documents for well-formedness and structure errors
Regex Tester
Test and debug regular expressions with live match highlighting
JSON to XML Converter
Convert JSON data to XML format with custom root element support
XML to JSON Converter
Convert XML documents to JSON with attribute and namespace support
YAML to JSON Converter
Convert YAML files and strings to JSON format with full YAML 1.2 support
JSON to YAML Converter
Convert JSON to YAML format for Kubernetes, Docker Compose, and CI/CD configs
CSV to JSON Converter
Convert CSV files to JSON arrays with custom delimiter support
Epoch Timestamp Converter
Convert Unix epoch timestamps to human readable dates and vice versa
Base64 Encoder / Decoder
Encode and decode Base64 strings, files, and binary data online
URL Encoder / Decoder
Encode and decode URLs and query strings with percent-encoding support
Hash Generator
Generate SHA-1, SHA-256, SHA-384, SHA-512 hashes using Web Crypto API
HTML Escape / Unescape
Escape special HTML characters to prevent XSS or unescape HTML entities
URL Parser
Break down any URL into protocol, hostname, path, query parameters and hash
QR Code Generator
Generate QR codes from text, URLs or any data with custom styling
Lorem Ipsum Generator
Generate placeholder lorem ipsum text in paragraphs, sentences or words