Format, convert, encode, decode, and analyze data
Edit JSON visually in your browser — add, delete, rename, and retype nodes in an interactive tree, or edit raw text with syntax highlighting. Switch between Text, Tree, and Preview modes anytime.
Encode text or files to Base64, decode Base64 back. Supports URL-safe variant and Data URI.
Write or paste Markdown and preview it live — great for AI output, READMEs and docs. GFM tables, math and Mermaid diagrams.
Generate QR codes for text, URLs, WiFi, contacts, and email — customize colors and download as PNG or SVG, all in your browser.
Create strong, random passwords with custom length and character sets. Cryptographically secure, in your browser.
Compute MD5, SHA-1, SHA-256, SHA-512, SHA-3, CRC32 hashes and HMAC for text or files.
Format, validate, and explore JSON with Monaco Editor, interactive tree view, and JSON Path filtering — all in your browser.
Decode JSON Web Tokens to inspect the header and payload. View claims and expiry. Local, private, no upload.
Generate random UUIDs (v4) in bulk. Choose uppercase, hyphens, or braces. Free, instant, in your browser.
Encode or decode URL components for safe use in web addresses.
Convert between CSV and JSON formats instantly.
Convert Unix timestamps and dates with timezone, batch CSV, code snippets, and JWT decoding.
Convert colors between HEX, RGB, and HSL formats with live preview.
Test regular expressions with real-time matching and highlighting.
Compare two texts and see line-by-line differences.
Convert text between UPPERCASE, lowercase, Title Case, camelCase, and more.
Convert between YAML and JSON formats.
Convert between JSON and XML formats.
Extract text from images using optical character recognition.
Count words, characters, sentences, and paragraphs in your text instantly.
Extract and preview ZIP archive contents online.
Generate placeholder text by paragraphs, sentences, or words.
Convert numbers between binary, octal, decimal, hexadecimal and any base 2-36. Supports very large numbers.