demo · v140

Uint8Array Base64 / Hex Tool

Type a string. The page encodes it to a Uint8Array and uses the v140 toBase64() / toHex() methods on the prototype to render both encodings. Round-trip back via Uint8Array.fromBase64() / fromHex() to verify.

bytes (decimal)


      

      

        
bytes.toHex()

        

      

      

        
bytes.toBase64()

        

      

      

        
round trip (decoded)

        

      

    

    

  

  
const enc = new TextEncoder().encode("hello world");
enc.toBase64();              // "aGVsbG8gd29ybGQ="
enc.toBase64({ alphabet: "base64url" });
enc.toHex();                 // "68656c6c6f20776f726c64"
Uint8Array.fromBase64("aGVsbG8=");
Uint8Array.fromHex("68656c6c6f");

  

    
see also