Base64 Encoder/Decoder
Encode and decode text and images to Base64 format instantly. Support for UTF-8, batch processing, and file upload. Free online Base64 tool.
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What is Base64 Encoder & Decoder?
Base64 encoding is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to encode images, files, and binary data for transmission over text-based protocols like email, HTTP, and JSON. Our Base64 Encoder/Decoder makes it easy to encode and decode Base64 text and images instantly.
Whether you need to embed images directly in HTML or CSS, encode authentication credentials, transmit binary data via JSON, or decode Base64 strings back to their original format, this tool handles it all. Support for text encoding with UTF-8 character awareness ensures proper handling of international characters and emojis.
All processing happens locally in your browser - your text and images are never uploaded to any server. This guarantees complete privacy for sensitive data while providing instant results without network latency.
How to use
- 1 To encode text: Paste your text in the input area and click "Encode"
- 2 To decode: Paste Base64 string in the input and click "Decode"
- 3 For images: Upload an image file or drag and drop into the tool
- 4 The Base64 result appears instantly in the output area
- 5 Click the copy button to copy the Base64 string to your clipboard
- 6 For images, use the decoded preview to verify the result
- 7 Download the output as a text file or image if needed
Common use cases
- ✓ Embedding images directly in HTML or CSS using data URIs
- ✓ Encoding authentication credentials for HTTP Basic Auth
- ✓ Transmitting binary data via JSON or XML APIs
View full documentation for more use cases →