Base64 Encoder
Encode text or files to Base64 format and decode Base64 strings back to their original form. Essential utility for developers working with data encoding.
Privacy & Security
All files are processed locally in your browser. Your data never leaves your device and is not uploaded to any server. We do not store, collect, or have access to your files.
How It Works
- 1
Choose encode or decode mode
- 2
Enter text or upload a file to encode, or paste Base64 string to decode
- 3
The tool performs conversion using standard Base64 encoding
- 4
Copy the result or download as a file
Use Cases
Encode images or files for embedding in HTML, CSS, or JSON
Decode Base64 data received from APIs or databases
Encode authentication credentials for HTTP headers
Convert binary data to text-safe format for transmission
Debug and inspect Base64-encoded data in applications
Frequently Asked Questions
What is Base64 encoding used for?
Base64 encodes binary data as ASCII text, making it safe for transmission in contexts that only support text (like JSON, XML, or URLs).
Can I encode image files?
Yes, you can encode any file including images. This is useful for embedding images directly in HTML, CSS, or data URIs.
Is there a size limit for encoding?
Processing happens in your browser, so limits depend on available memory. Files up to several megabytes typically work well.
Does Base64 compress data?
No, Base64 actually increases size by about 33%. It is an encoding format for compatibility, not a compression format.
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