Encode plain text to Base64 format instantly. Fast, secure, and 100% free.
Enter your plain text below to encode it to Base64 format
Base64 encoding is a method of converting binary data into an ASCII string format by translating it into a radix-64 representation. It uses a set of 64 characters (A-Z, a-z, 0-9, +, /) to represent binary data in a text format that can be safely transmitted over text-based protocols.
This encoder tool helps you convert plain text into Base64 format, which is commonly used in web development, email systems, data URIs, and anywhere you need to transmit binary data as text. Base64 encoding is essential for embedding images in CSS/HTML, storing binary data in JSON, and sending attachments via email.
Create data URIs for embedding images, fonts, and other resources directly in HTML/CSS
Encode authentication credentials, tokens, and binary data for API requests
Store binary data in JSON, XML, or other text-based formats
Encode file attachments for transmission via MIME email protocols
Yes, all encoding happens entirely in your browser. Your data never leaves your device and is never sent to any server, ensuring complete privacy and security. However, note that Base64 is not encryption - it's an encoding method and can be easily decoded.
No, Base64 encoding actually increases the size of data by approximately 33%. It's used for compatibility with text-based systems, not for compression. If you need compression, use tools like gzip before encoding.
Yes, you can encode large texts. However, very large inputs (over 10MB) might temporarily slow down your browser during processing.
Absolutely! This Base64 encoder is completely free with no limitations, registration, or hidden costs.