Base64 Encoder & Decoder
Input Text
Upload File
Base64 Output
About Base64 Encoder & Decoder
Base64 encoding is a method of converting binary data into a text format that can be safely transmitted over systems that only support ASCII text. Our Base64 Encoder & Decoder tool provides a simple and efficient way to encode text, files, and images into Base64 format, or decode existing Base64 strings back to their original form.
This tool is particularly useful for developers working with:
- Data URIs for embedding images in HTML/CSS
- API requests and responses
- Email attachments
- URL-safe data transmission
- Storage of binary data in text format
With support for both text and file inputs, our tool can handle various types of data, including plain text, images, and other file formats. The real-time encoding/decoding feature, combined with copy and download capabilities, makes it an essential utility for developers and technical professionals.
Frequently Asked Questions
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data using a set of 64 characters (A-Z, a-z, 0-9, + and /). Its commonly used to transmit binary data over channels that only reliably support text content, such as email systems or URLs.
When should I use Base64 encoding?
Common use cases include:
- Embedding images or other binary files directly in HTML/CSS
- Sending binary data in JSON payloads
- Encoding data that contains special characters
- Creating data URIs for web resources
- Storing binary data in text-only storage systems
How do I encode a file?
Simply use the file upload section of our tool. Select your file (image or text), and the tool will automatically convert it to a Base64 string. The encoded output can then be copied or downloaded for your use. The tool supports various file types, including images (PNG, JPEG, GIF) and text files.
Why is my Base64 string so long?
Base64 encoding increases the data size by approximately 33% because it represents 3 bytes of data with 4 Base64 characters. This overhead is a trade-off for the ability to safely transmit binary data through text-only channels. For large files, consider whether Base64 encoding is necessary for your use case.
Is it safe to encode sensitive data?
While our tool processes all data locally in your browser without sending it to any server, its important to note that Base64 encoding is not encryption. Its an encoding method, not a security measure. Never use Base64 encoding as a way to protect sensitive data - use proper encryption methods instead.