Base64 Encode
Encode text to and from Base64 format. Free, fast, and secure Base64 encoder. 100% client-side processing, no server upload.
Input
What is Base64 Encode?
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format using a radix-64 representation. It's widely used for transmitting data over channels that only support ASCII text, like email or embedding images in HTML/CSS.
How to Use Base64 Encode
1. Enter or paste your text into the input field. 2. The Base64 encoded result appears instantly in the output field. 3. Click "Copy" to copy the encoded text to your clipboard. 4. Use "Clear" to reset and start over.
When to Use Base64 Encode
Use Base64 encoding when embedding binary data in text formats (like JSON/XML), creating data URLs for images, or transmitting binary data over text-only protocols like email or HTTP headers.
How Base64 Encode Works
Base64 encoding divides binary data into 6-bit chunks (2^6=64 possible values), maps each chunk to a printable ASCII character (A-Z, a-z, 0-9, +, /), and uses "=" for padding when the input length isn't a multiple of 3 bytes. This increases data size by approximately 33%.
Common Use Cases
- Data URLs in HTML/CSS
- Email attachments (MIME)
- JSON/XML data embedding
- Authentication tokens
- API data transmission
- Storing binary data in databases
Security Note
⚠️ Base64 is NOT encryption! It's easily reversible and provides no security. Never use it to protect sensitive information.
FAQs
1 What is Base64 used for?
Base64 is primarily used for data urls in html/css, email attachments (mime), and many other applications where base64 encoding is needed.
2 Is Base64 secure?
Base64 is an encoding method, not encryption. It provides no security and can be easily reversed. Never use it to protect sensitive data.
3 Is this tool safe to use?
Yes! All encodeing happens in your browser. Your data never leaves your device and is not sent to any server.