Free Online Encoding Tools
7 free browser-based encoding tools — no sign-up, no server uploads, all processing happens in your browser.
Base64 Encoder & Decoder
Base64 encode and decode online. Convert text, files, and images to Base64. Decode Base64 to image with live preview. URL-safe mode supported
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa with live clock
URL Encoder & Decoder
Encode and decode URLs with encodeURIComponent, encodeURI, and query string modes
Hash Generator
Generate MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512 hashes from text or files. HMAC-SHA256, hash comparison, drag-and-drop file hashing. All in-browser.
HTML Entity Encoder & Decoder
Encode special characters to HTML entities or decode entities back to text with named, decimal, and hex formats
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal with BigInt precision and formatting
Markdown to HTML Converter
Convert Markdown to clean, semantic HTML with pretty formatting, preview mode, and full document export