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Base64 Decoder

Convert Base64 encoded text back to its original format. Perfect for debugging, API responses, and data analysis. Completely secure and browser-based.

Base64 Input

Enter your Base64 encoded data here to decode it back to original format

Decoded Output

About the Base64 Decoder

This Base64 decoder tool allows you to convert Base64 encoded text back to its original format. Simply paste your Base64 string into the input field or upload a file, then click decode to get the readable text.

Secure Decoding

All decoding happens in your browser - no data is uploaded to servers. Your information stays private and secure on your device.

Format Validation

Automatically validates Base64 format and provides clear error messages for invalid input, helping you identify and fix encoding issues.

File Support

Upload Base64 files directly for decoding or download your decoded results as files for easy sharing and storage.

Keyboard Shortcuts

Speed up your workflow with convenient keyboard shortcuts for decoding and clearing text. Perfect for developers and power users.

Common Use Cases for Base64 Decoding

  • Debugging API responses that contain Base64 encoded data
  • Extracting text from Base64 encoded email attachments or web content
  • Analyzing authentication tokens and JWT payloads
  • Converting data URLs back to readable content for inspection

Additional resources

This free Base64 decoder tool is part of our collection of developer utilities designed to make your coding workflow more efficient.

Base64 Decoder FAQ

Base64 decoding is the process of converting Base64 encoded text back to its original format. It reverses the Base64 encoding process, transforming the ASCII characters back into readable text or binary data.

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