Encoders
Base64, URL encoding, HTML entities, binary, hex. Encode and decode any text format securely. All tools run 100% in your browser — no uploads, no accounts needed.
Available Encoders
Base64 Encoder & Decoder
Convert between plain text and Base64 encoding instantly. Base64 is the standard encoding for transmitting binary data over text-based protocols. This tool properly handles UTF-8 text and offers an optional URL-safe alphabet variant perfect for JWTs, API tokens, and query string parameters.
Binary to Text Converter
Explore the binary representation of text, or decode binary back to human-readable form. Converts between UTF-8 text and 8-bit binary octets, handling multi-byte characters correctly. Perfect for learning, debugging encoding issues, steganography, or just satisfying curiosity about how computers represent text.
HTML Entities Encoder & Decoder
Escape special HTML characters so they're safe to embed in web pages, or reverse the process to decode entity references back to readable text. Optional numeric entity mode encodes every non-ASCII character to ensure maximum compatibility with legacy systems, email clients, and specific character encodings.
URL Encoder & Decoder
Convert between plain text and percent-encoded URL-safe formats. Choose component mode for encoding query parameter values (encodes reserved characters like ? & =), or full-URL mode for entire URLs (preserves URL structure). Essential for building URLs programmatically, debugging encoded parameters, and handling special characters in web addresses.
About Encoders
Our encoders are designed to handle your files with complete privacy. Unlike online services that upload your documents to remote servers for processing, all our tools run entirely within your browser using WebAssembly technology. This means your sensitive files — whether they're financial documents, personal records, or confidential business materials — never leave your device.
Each tool is optimized for speed and reliability. We use industry-standard libraries like MuPDF for PDF operations, compiled to run at native speeds in your browser. There's no queue, no waiting, and no limits on file size beyond what your device can handle.