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Tool · Convert

Encode and decode text

Base64, URL encoding, HTML entities and hex in both directions, plus a reader for JSON Web Tokens. Tokens and secrets are decoded here and never sent anywhere.

Your text goes to
Nowhere
Works offline
Yes, once it has loaded
Account
None, and it is free
Handles
Base64, URL encoding, HTML entities, hex and JSON Web Tokens
Waiting for input
Input
Output

          
        

      

    

  








  
How it works

  

    
How to encode and decode text

  

  

    
    
      
  1. 
        
    01Pick a format
    
        
    Base64, URL-safe Base64, URL encoding, HTML entities, hex, or the JWT reader.
    
      
    2. 
      
  2. 
        
    02Paste your input
    
        
    Choose Encode or Decode, or let auto-detect decide when you paste.
    
      
    3. 
      
  3. 
        
    03Copy the output
    
        
    Or send it back to the input and decode again.
    
      
    4. 
    

  





  
Questions

  

    
Questions about Encode & Decode

  

  

    

      

        How do I decode Base64?
        
Paste it into the input with Base64 and Decode selected, or leave Auto-detect on and simply paste it.

      

      

        Is Base64 a form of encryption?
        
No. It is an encoding that anyone can reverse. Never rely on it to hide anything.

      

      

        Can it verify a JWT?
        
No. It decodes the header and the claims, but checking the signature needs the signing key, which should never be pasted into a web page.

      

      

        Is it safe to paste a live token?
        
Yes. The browser blocks this page from making any network request, so the token is decoded on your device and goes nowhere else.