Base64 Tools

Base-64 Decoder

Base-64 Decoder decodes Base64 back to UTF-8 text and switches direction with one toggle. It runs in your browser with nothing uploaded to any server.

Client-sideRuns entirely in your browser — your data never leaves your device.

Base-64 Decoder is a free Base64 Tools utility that runs entirely in your browser — nothing you enter is uploaded.

Input
Output



  
How to use Base-64 Decoder

  
    
      
  1. Drop your text into the field at the top of Base-64 Decoder.
    2. 
      
  2. Adjust the Mode option to match what you need.
    3. 
      
  3. Base-64 Decoder updates the output automatically as you type.
    4. 
      
  4. Use Copy to keep or reuse the result.
    5. 
  

  
About this tool

  
Everything Base-64 Decoder does happens on your own device. Base-64 Decoder encodes or decodes Base64 on your device with no round-trip to a server.

  
Because it runs locally, even sensitive payloads never leave the page. It behaves the same on desktop and mobile, with nothing stored remotely.

  
Frequently asked questions

  

      
What is Base-64 Decoder for?
Base-64 Decoder runs entirely on your device: add your input using the Mode control, and it decodes it locally in real time.

      
Do I need an account for Base-64 Decoder?
No — Base-64 Decoder needs no account, sign-up or installation.

      
Is my input private in Base-64 Decoder?
Yes — your input never leaves your device; Base-64 Decoder does all the work in your browser.

      
Is Base64 in Base-64 Decoder URL-safe?
Base-64 Decoder uses standard Base64 by default and runs locally, so your data is never sent anywhere.

      
Can I use Base-64 Decoder without a connection?
Yes — after the first load Base-64 Decoder runs entirely offline.

  

  
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