Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back to text. All processing happens in your browser—no data leaves your device.
What is Base64?
Base64 is an encoding scheme that converts binary data into ASCII text. It uses 64 characters (A–Z, a–z, 0–9, plus signs, and slashes) to represent any data. Base64 is widely used for embedding images in HTML, storing data in URLs, and transmitting binary content over text-only protocols.
Common Uses
- Data URIs for images and fonts
- Basic authentication headers
- Storing binary data in JSON
- Email attachments (MIME)
- API payloads and webhooks
Encoding vs Decoding
Encoding converts plain text or binary data into Base64. Decoding reverses the process to recover the original content. Invalid Base64 input will produce an error when decoding—ensure you paste complete, valid Base64 strings.
Privacy and Security
Base64 is not encryption. It does not hide or protect data—anyone with the string can decode it. Never use Base64 for sensitive information. Use proper encryption for passwords and secrets.
Need Secure Development?
Our development team builds secure applications with proper handling of encoding, encryption, and data serialization. Get in touch for custom solutions.