Base64 Online: Encoding of Binary Data into Printable Characters
In web applications, it is often necessary to convert binary data (e.g. images, audio, video, etc.) into a text format that can be transmitted and stored. And Base64 encoding is a commonly used way to convert binary data into text strings containing only ASCII characters for data transmission and storage. In this article, we will introduce the concept of Base64 online, the principle and the use of the scene.
中文版本:Base64在线：将二进制数据转换为可打印字符的编码方式
Base64:https://be.woscs.com/base64/
1, What is Base64?
Base64 is a way of encoding binary data into printable characters, which uses 64 characters to represent all possible values. These characters include uppercase letters, lowercase letters, numbers and two special characters (usually “+” and “/”).Base64 encoding is characterised by the fact that the length of the encoded text will be slightly longer than the original binary data.
2, The principle of Base64 online
The principle of Base64 encoding is to divide every 3 bytes of data (24 bits) into 4 groups of 6 bits each. Then, each group of 6 bits is converted to a Base64 character. If the original data is less than 3 bytes, the padding operation will be carried out.
3, Base64 online use of the scene
- Image transfer: After converting image files to Base64-encoded text strings, they can be embedded directly in HTML or CSS, avoiding independent requests for image files and improving page loading speed.
- Data transmission: In network transmission, some transmission protocols (such as SMTP) only support the transmission of text data, and cannot directly transmit binary data. At this time, you can use Base64 encoding to convert binary data to text format for transmission.
- Data storage: Some databases or storage systems only support the storage of text data and cannot directly save binary data. By converting binary data to Base64 encoded text strings and then storing them, you can easily read and write operations.
In practice, Base64 online can be implemented through the programming language’s built-in Base64 codec functions. The implementation of different programming languages may be different, but the basic principle is the same.
4, Summary
Base64 online is a way to convert binary data into printable characters, which has a wide range of application scenarios in network applications. By converting binary data to text format, Base64 encoding achieves the convenience of data transmission and storage, and Base64 encoding is applied in suitable scenarios for data processing and optimisation.