What is Base64 encoding?

Base64 is an encoding scheme that converts binary data into ASCII text format using 64 different characters (A-Z, a-z, 0-9, +, /). It's commonly used to transmit binary data over text-based protocols like HTTP and email.

Does Base64 encryption secure my data?

No, Base64 is encoding, not encryption. It makes data unreadable to casual observers but can be easily decoded by anyone. For security, use proper encryption methods like AES or RSA.

Why does Base64 increase file size?

Base64 encoding increases data size by approximately 33% because it represents 3 bytes of binary data using 4 ASCII characters. This is the trade-off for making binary data text-safe.

Base64 Encoder/Decoder

Encode and decode Base64 strings

Input

About This Tool

Encode and decode data using Base64 with our free online tool. Convert text, images, and files to Base64 format for safe data transmission and storage. Essential for web developers working with APIs, email attachments, data URIs, and anywhere binary data needs to be represented as text.

Choose encode or decode mode
Enter your text or upload a file
Click the encode/decode button
Copy the result to your clipboard
Use the Base64 data in your application

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