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devtools

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

Remove whitespace and comments from HTML to reduce file size, with preservation of IE conditional co

Beautify and indent HTML markup with correct handling of inline, block, and void elements, entirely

Encode special characters to HTML entities or decode HTML entities back to plain text, entirely in t

Generate MD5, SHA-1, SHA-256, and SHA-512 cryptographic hashes from text input, entirely in the brow

Parse and display CSV data as a sortable, interactive HTML table with automatic delimiter detection,

Convert CSV text to a JSON array of objects using a custom RFC-4180-compatible parser with configura

Parse and explain any cron expression with field-by-field breakdown, human-readable description, and

Build cron expressions visually from 5-field inputs with human-readable description and next-run pre