Unicode Encode/Decode

Tool Introduction

This tool is an efficient and convenient online Unicode encoder/decoder. It can quickly encode ordinary text characters into standard Unicode escape sequences (e.g., \uXXXX format), and also decode these Unicode escape sequences back into their original text content.

According to the configuration, this tool provides two text input areas, "Before encoding" and "After encoding", as well as clear "Encode" and "Decode" function entry points. Whether you need to convert human-readable text into machine-recognizable Unicode format, or convert a string of Unicode escape sequences back into readable text, this tool can easily achieve bidirectional conversion.

How to Use

1. To encode (convert text to Unicode escape sequences): Enter or paste the text content you need to encode into the "Before encoding" text box on the left. Then, click the "Encode" button. The encoded Unicode escape sequence will automatically appear in the "After encoding" text box on the right.
2. To decode (convert Unicode escape sequences to text): Enter or paste your Unicode escape sequence (e.g., \u4f60\u597d) into the "After encoding" text box on the right. Then, click the "Decode" button. The decoded original text content will automatically appear in the "Before encoding" text box on the left.
3. Input parameter requirements:
   • When encoding: The "Before encoding" text box accepts any legal characters, numbers, symbols, and multilingual text.
   • When decoding: The "After encoding" text box primarily accepts strings that conform to Unicode escape sequence specifications, such as the \uXXXX format. Other non-standard formats may lead to decoding failure or garbled characters.
4. Output result format:
   • After encoding: Output is a standard \uXXXX format Unicode escape sequence.
   • After decoding: Output is the original text content corresponding to the input Unicode escape sequence.

Usage Examples

Below are practical examples of using this Unicode encoder/decoder tool:

• Example 1: Encoding the Chinese phrase "你好，世界！"
  
  • Operation demonstration: In the "Before encoding" text box, enter: 你好，世界！, then click the "Encode" button.
  • Expected output: The "After encoding" text box will display: \u4f60\u597d\uff0c\u4e16\u754c\uff01
• Example 2: Decoding a Unicode escape sequence back to text
  
  • Operation demonstration: In the "After encoding" text box, enter: \u4f60\u597d\uff0c\u4e16\u754c\uff01, then click the "Decode" button.
  • Expected output: The "Before encoding" text box will display: 你好，世界！
• Example 3: Encoding English and special characters
  
  • Operation demonstration: In the "Before encoding" text box, enter: Hello, World! 123@abc, then click the "Encode" button.
  • Expected output: The "After encoding" text box will display: \u0048\u0065\u006c\u006c\u006f\u002c\u0020\u0057\u006f\u0072\u006c\u0064\u0021\u0020\u0031\u0032\u0033\u0040\u0061\u0062\u0063

Frequently Asked Questions

• Q: Which input character sets does this tool support for encoding? A: This tool is based on the Unicode standard and theoretically supports characters, symbols, and numbers from all languages worldwide for encoding.
• Q: Which Unicode escape sequence formats are supported for decoding? A: It primarily supports the standard \uXXXX format (four hexadecimal digits), such as \u4f60. Other non-standard or incomplete formats may not be correctly recognized.
• Q: Why do I get garbled characters or errors after decoding? A: This is usually due to an incorrect, incomplete, or invalid Unicode escape sequence format in the input. Please check if the input strictly conforms to the \uXXXX format.
• Q: Why do English characters also become \uXXXX after encoding? A: Unicode encoding is a unified character representation scheme. Even English characters within the ASCII range will be converted to their corresponding Unicode code points. For example, the Unicode for the letter 'A' is \u0041.

Notes

• Format accuracy: When performing decoding operations, please ensure that the input Unicode escape sequence format is correct. For example, each escape sequence should start with \u followed by four hexadecimal digits. Non-standard input may lead to conversion failure or inaccurate results.
• Whitespace characters: Spaces, newlines, and other special whitespace characters in the text will also be encoded into corresponding Unicode escape sequences. These whitespace characters will also be restored during decoding.
• Error handling: When inputting illegal or incomplete Unicode escape sequences for decoding, the tool may not provide valid output or may output error messages. Please carefully verify your input.
• Browser compatibility: For the best experience, it is recommended to use a modern browser to access this tool.

What is Unicode Encoding?

Unicode (Unified Code, Universal Code, Single Code) is an internationally recognized character encoding standard that assigns a unique numerical code to every character in every language in the world, allowing these characters to be displayed and processed regardless of platform, program, or language environment.

Unicode was designed to resolve conflicts and incompatibilities between different character encodings (such as ASCII, GBK, Shift-JIS, etc.). It uses 16 or 32 bits to represent a character, thus capable of representing far more characters than earlier encodings. The \uXXXX format we commonly see is a hexadecimal escape representation of a Unicode character, where XXXX represents the Unicode code point of that character.

For example, the Chinese character "你" corresponds to the code point U+4F60 in Unicode, and is often represented as \u4f60 in programs.