Free Online Encoding Tools
10 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
Base64 Image Encoder & Decoder
Convert images to Base64 data URIs and decode Base64 strings back to images. Supports PNG, JPEG, GIF, WebP, and SVG. Copy as raw Base64, data URI, HTML img tag, or CSS background-image.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa with live clock
URL Encoder & Decoder
Free online URL encoder decoder. Encode and decode URLs instantly with encodeURIComponent, encodeURI, or query string mode. Auto-detect, parse URL components, and copy results. 100% browser-based.
URL Encode Decode Online
URL encode and decode online with bulk mode for multiple URLs. Component vs full URL encoding toggle, query string parser, and clipboard copy. Free browser-based tool.
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 plain text. Supports named (&), decimal (&), and hex (&) formats. Live preview as you type.
HTML Entity Encoder & Decoder
Free HTML entity encoder decoder online. Encode HTML special characters (&, <, >, ") to named, decimal, or hex entities. Decode HTML entities back to text instantly. Live preview, entity reference table, bulk mode. 100% browser-based.
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