Base64 Encode String
Encode any text or string to Base64 format instantly. Perfect for encoding API keys, credentials, or any data that needs Base64 encoding.
- Data never leaves your device
- No server upload required
- Works completely offline
- No login or signup needed
How It Works
Base64 encoding converts text into a Base64 string format, commonly used in web development for encoding data in URLs, API requests, or data URIs. Enter your text, click encode, and get the Base64 output instantly. The encoding uses the browser's native btoa() function for perfect accuracy. You can copy the result or download it as a text file. All processing happens in your browser — your data is never sent to any server.
Frequently Asked Questions
What is Base64 encoding?
Base64 is a method of encoding binary data into ASCII text format. It's commonly used to encode data in URLs, emails, and data URIs.
When should I use Base64 encoding?
Use Base64 when you need to transmit binary data over text-based protocols, embed images in HTML/CSS, or encode credentials for HTTP Basic Authentication.
Is Base64 encryption?
No, Base64 is encoding, not encryption. It's easily reversible and provides no security. Don't use it to protect sensitive data.
Can I encode special characters?
Yes, the tool supports UTF-8 encoding, so you can encode text with special characters, emojis, and international characters.