Base64 Encoder & Decoder

Encode or decode Base64 instantly for APIs, tokens, and debugging. Works locally in your browser for better privacy.
Input
Runs in your browser
Switch mode if you want strict encode or strict decode.
Output

          

        

      

    

            
          

                  
What Base64 encoding is

          
Base64 converts data into a text-safe format so it can be transmitted through systems that expect plain text (URLs, JSON, headers, configs). It is not encryption—anyone can decode it back.

                  
When to use Base64

          
Use Base64 for quick debugging, transporting tokens, or embedding small binary data as text. If you need security for secrets, use proper encryption instead of Base64.

                  
Common issues and tips

          
If decoding fails, the input may contain invalid characters or missing padding (“=”). Also, decoding binary content may not produce readable text because it represents raw bytes.

              

    
          

        
How to encode/decode Base64

                  
Convert plain text to Base64 and back.

                          
    
                          
  1. Paste your text (or Base64) into the input.
    2. 
                          
  2. Choose Encode or Decode.
    3. 
                          
  3. Copy the output.
    4. 
                      

              

    
          

        
FAQ

                  

            Can Base64 decode fail?
            
Yes—if the input is not valid Base64 or contains invalid characters.

          

                  

            Is Base64 encryption?
            
No. It is an encoding format, not encryption.