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devtools

Format and validate YAML documents using js-yaml with configurable indentation and line width, entir

Convert XML documents to JSON using a recursive DOM walker with attribute, text, and repeated-tag ha

Generate version 4 UUIDs in four formats using crypto.randomUUID() with a template-string fallback

Decompose a URL into its 9 structural components and list all query parameters in a table, entirely

Encode or decode URL components using encodeURIComponent and decodeURIComponent, entirely in the

Browser-based unicode-encoder tool. Live demo at file-converter-free.com

Beautify and indent SQL queries by inserting newlines before clause keywords, entirely in the browse

Validate JSON-LD structured data against schema.org type requirements, detect typos with Levenshtein

Test JavaScript regular expressions against input text with live match highlighting and capture grou

Generate QR codes from text or URL input with configurable error correction level and download as PN

Analyze password strength with a visual meter, five requirement checks, and estimated brute-force cr

Generate bulk lists of cryptographically random passwords with configurable length range, character

Generate cryptographically random passwords with configurable length, character sets, and quantity,

Generate HS256-signed JSON Web Tokens using a pure JavaScript HMAC-SHA256 implementation, entirely i

Browser-based jwt-decoder tool. Live demo at file-converter-free.com

Convert JSON objects and arrays to indented XML with automatic tag sanitization and entity escaping,

Format, beautify, or minify JSON with configurable indentation and inline validation, entirely in th

Compare two JSON objects recursively and display added, removed, modified, and unchanged fields with

Remove comments and collapse whitespace from JavaScript source code to reduce file size, entirely in

Build and send HTTP requests with custom method, headers, query parameters, and body directly from t