Base64 Multi-Converter

Encode any file structure or text into Base64 format, or decode strings back to binary files.


        


        
      


      
      
    


    
    

      
      
      
    


    
    

      
What is Base64 Encoding?

      
Base64 is a binary-to-text encoding scheme that translates raw data bytes into a set of 64 printable ASCII characters (consisting of letters, numbers, and symbols). It is commonly used to embed images directly within HTML/CSS files, transport email attachments safely without data corruption, or store binary matrices inside JSON objects.


      
How to Encode and Decode Files Locally

      
This utility utilizes HTML5 FileReader streams. When encoding files, it converts them into a Data URI (which is a Base64 string prefixed with the file MIME type). When decoding, it parses the Base64 code, rebuilds the binary array into a browser Blob memory buffer, and returns it to you as a native download file without server interaction.


      
How to Use This Converter

      
    
        
  1. Choose whether you want to **Encode** or **Decode** using the radio selectors.
    2. 
        
  2. For Encoding: Select whether you want to encode a simple **Text String** or a binary **File**.
    3. 
        
  3. For Decoding: Paste the Base64 string directly. If it represents a file, the tool detects the MIME type and enables the **Download Decoded File** button.
    4. 
        
  4. Click **Convert** to view results, and copy or save the results immediately.
    5.