Base64 is an encoding scheme that converts binary data (images, files) into 64 ASCII characters. It is often used to pass binary data safely in contexts that only allow text.
Why use Base64
Some systems or formats cannot handle raw binary data. Base64 turns it into text so it can be sent and stored. That is useful for email attachments, data URLs, and API payloads.
Examples
- Embed images in HTML/CSS as data URLs
- Send binary data in APIs or JSON
- Email MIME encoding
- Quick string serialization tests
Encode vs. decode
Encoding turns original data into a Base64 string. Decoding turns a Base64 string back into the original form. Both are common in development.
Caveats
Base64 is not encryption. It only changes representation, so do not treat it as security for sensitive data. Encoded data can also be larger than the original.
When to use it
- Small images as data URLs
- API tests that need text-based payloads
- When you must handle file content as strings
Wrap-up
Base64 is a basic encoding in development and data handling. EveryUtil Base64 tool can encode text or decode Base64 strings.