// all tools
The whole toolbox, one tab.
36 developer utilities grouped by what they do — formatting, encoding, code, and web. All free, all private, nothing to install.
No upload, ever No account needed Works offline
// formatters
Formatters & Converters
JSON Formatter & Validator Most Popular Format, validate, repair and minify JSON, view it as a tree, or convert it to XML, CSV and YAML. XML Formatter & Validator Format, validate and explore XML as a tree, or convert it to JSON, CSV and YAML. CSV to JSON Converter Convert CSV into an array of JSON objects in one click: comma, semicolon, tab or pipe delimited. JSON to CSV Converter Convert JSON arrays into CSV ready for spreadsheets and export. YAML to JSON Converter Convert YAML configuration into valid JSON instantly. JSON to YAML Converter Convert JSON data into clean, readable YAML instantly. JSON to XML Converter Convert JSON data into clean, indented XML instantly. XML to JSON Converter Convert XML documents into structured JSON instantly. JSON to TypeScript Generate TypeScript interfaces from any JSON sample. JSON to Python Generate Python dataclasses from any JSON sample. JSON to C# Generate C# classes from any JSON sample. JSON to Go Generate Go structs with json tags from any JSON sample. JSON to Rust Generate Rust serde structs from any JSON sample. JSON to Kotlin Generate Kotlin data classes from any JSON sample. JSON to Java Generate Java records from any JSON sample. TOML to JSON Converter Convert TOML (Cargo.toml, pyproject.toml) to JSON and JSON back to TOML. .env to JSON Converter Convert .env files to JSON and JSON back to .env, both ways. Query String to JSON Converter Convert a URL's query parameters to JSON, and JSON back to a query string. JSON Diff Compare two JSON documents side by side and see every missing property, changed value and type mismatch. JSONPath Tester Run a JSONPath expression against JSON and see the matches. Markdown Viewer & Previewer Write Markdown and see a live preview, then copy the HTML, download an .html file or export a PDF.
// encoding
Encoding, Hashing & Security
Password Generator Generate strong random passwords or memorable passphrases, with a strength estimate. Base64 Encode / Decode Hot Encode and decode Base64 for text and files, with charset, line-by-line, MIME and URL-safe options. URL Encode / Decode Percent-encode and decode URLs and query string components safely. JWT Decoder & Encoder Hot Decode, verify and generate JSON Web Tokens: claims breakdown, signature check and signing, entirely client-side. Hash Generator Popular Generate MD5, SHA-1, SHA-2, SHA-3, Keccak-256 and CRC32 hashes or HMACs of text or files, and check a known value. UUID / GUID Generator Generate UUID v4 and v7, ULID or NanoID, singly or in bulk, ready to copy.
Unix Timestamp Converter Convert Unix timestamps to human dates and back, with a live clock. Cron Expression Parser Explain a cron expression in plain English and see its next runs. Regex Tester Popular Test and debug regular expressions with live match highlighting. CSS Minifier & Beautifier Minify CSS to shrink it, or beautify it for readable formatting. HTML Formatter & Minifier Format messy HTML with clean indentation, or minify it to cut its size. HEX & RGB Color Converter Convert HEX to RGB, RGB to HEX, and either to HSL or CMYK, with a picker and live swatch.
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