Convert raw hexadecimal byte streams into ASCII plain text and vice versa.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Choose Text to Hex or Hex to Text conversion mode.
Paste your raw hex string or plain text into the workspace.
Copy the converted string or download it as a text file.
The converter supports space-separated (48 65), C-style 0x prefixes (0x48, 0x65), comma-separated, and unspaced continuous hex strings.
Standard 1-byte hex characters map to standard ASCII (0-127) and extended ASCII (128-255).
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