Developer Tools.
Inspect, format, validate and transform code and structured data.
JSON Formatter
Format, validate and minify JSON with clear errors.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text.
URL Encoder / Decoder
Encode or decode URL components safely.
HTML Entity Encoder
Escape HTML-sensitive characters and decode entities.
Unix Timestamp Converter
Convert Unix timestamps and readable dates.
Unicode Encoder / Decoder
Encode text as Unicode code points or decode escaped Unicode sequences with validation.
Binary Encoder / Decoder
Convert UTF-8 text to binary bytes and decode binary byte groups back into text.
ROT13 Encoder / Decoder
Apply reversible ROT13 letter substitution to text locally in your browser.
Morse Code Converter
Convert letters, numbers and common punctuation to International Morse code and back.
JSON to CSV Converter
Convert an array of JSON objects into a downloadable CSV.
QR Text Helper
Prepare clean text and links for QR-code workflows.
HTML Preview
Preview a small HTML snippet in a sandboxed frame.
CSV to JSON
Convert comma-separated values into JSON objects.
JSON Validator
Validate JSON syntax and report whether it parses.
HTML to Plain Text
Extract readable text from an HTML snippet.
Number Base Converter
Convert integers between binary, decimal, hexadecimal and octal.
JSON Path Extractor
Read a value from JSON using a simple dot path.
JSON Key Sorter
Sort object keys recursively for consistent diffs.
JSON to TypeScript
Infer a TypeScript type from a JSON sample.
CSV to TSV
Convert CSV rows into tab-separated values.
TSV to CSV
Convert tab-separated values into escaped CSV.
XML Entity Escaper
Escape XML reserved characters.
HTML Minifier
Remove safe HTML whitespace and comments from snippets.
CSS Minifier
Remove comments and compact CSS whitespace.
SQL Formatter
Format common SQL keywords onto readable lines.
Regular Expression Tester
Test a JavaScript regular expression against sample text.
UUID Validator
Check whether a string has UUID syntax.
Query String Parser
Parse a query string into readable JSON.
URL Component Inspector
Break a URL into protocol, host, path and query.
Live Code Studio & Debugger
Run JavaScript, TypeScript, Python and SQL in your browser, inspect errors, and save shareable code workspaces.
Custom Branded QR Code Generator
Create custom QR codes with brand colors, logo overlays, corner styles and PNG/SVG export directly in your browser.
Auto-Expiring Secure File Vault QR
Upload supported files to temporary local storage, create branded QR links, optionally protect access with a password, and expire links after 72 hours or one week.