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🔡 二进制转 UTF-8 文本（解码二进制字节）Convert Binary to UTF-8
把二进制字节解码成 UTF-8 文本：每 8 位一个字节，可用空格、逗号或换行分隔，也可以连在一起；中文、表情等多字节字符都能正确还原。遇到无效的 UTF-8 字节时，会指出是第几个字节，或者按你的选择替换成 �。适合解 CTF 题、检查编码问题和学习 UTF-8 的字节结构，数据在本地处理。Decode binary bytes into UTF-8 text. Each byte is 8 bits; separate bytes with spaces, commas or new lines, or run them together. Chinese, emoji and other multi-byte characters are restored correctly. When a byte sequence is not valid UTF-8 the tool tells you which byte, or replaces it with � if you prefer. Handy for CTF puzzles, tracking down encoding problems and learning how UTF-8 bytes are built. Processed locally.
使用说明与常见问题How-to & FAQ
「二进制转 UTF-8 文本（解码二进制字节）」是什么？What is the Convert Binary to UTF-8 tool?
把二进制字节解码成 UTF-8 文本：每 8 位一个字节，可用空格、逗号或换行分隔，也可以连在一起；中文、表情等多字节字符都能正确还原。遇到无效的 UTF-8 字节时，会指出是第几个字节，或者按你的选择替换成 �。适合解 CTF 题、检查编码问题和学习 UTF-8 的字节结构，数据在本地处理。Decode binary bytes into UTF-8 text. Each byte is 8 bits; separate bytes with spaces, commas or new lines, or run them together. Chinese, emoji and other multi-byte characters are restored correctly. When a byte sequence is not valid UTF-8 the tool tells you which byte, or replaces it with � if you prefer. Handy for CTF puzzles, tracking down encoding problems and learning how UTF-8 bytes are built. Processed locally.
如何使用「二进制转 UTF-8 文本（解码二进制字节）」？How do I use the Convert Binary to UTF-8 tool?
在「二进制转 UTF-8 文本（解码二进制字节）」中，把内容粘贴或输入到上方输入框，按需设置「遇到无效字节」，结果会实时显示在下方，点击「复制结果」即可复制。例如输入「01001000 01101001」，得到「Hi」。In the Convert Binary to UTF-8: Paste or type into the input box, adjust "Invalid bytes"; the result appears below instantly — click "Copy result" to copy it. Example: "01001000 01101001" → "Hi".
字节之间要怎么分隔？How should the bytes be separated?
用空格、逗号、分号或换行分隔时，每个字节可以是 1–8 位（不足 8 位按左边补 0 理解，例如 1001000 = 01001000）；如果全部连在一起，总位数必须是 8 的倍数，每 8 位算一个字节。With spaces, commas, semicolons or new lines between bytes, each byte may be 1–8 bits (short ones are read with leading zeros, so 1001000 = 01001000). If everything is run together the total must be a multiple of 8 and every 8 bits is one byte.
UTF-8 的字节结构是怎样的？How are UTF-8 bytes structured?
ASCII 字符是一个 0xxxxxxx 字节；其他字符用 2–4 个字节：首字节以 110、1110 或 11110 开头，表示总字节数，后面的字节都以 10 开头。例如“中”是 11100100 10111000 10101101。不符合这个结构的字节就是无效 UTF-8。An ASCII character is one 0xxxxxxx byte. Other characters take 2–4 bytes: the first starts with 110, 1110 or 11110 (giving the length) and every following byte starts with 10. The Chinese character for 'middle' (U+4E2D) is 11100100 10111000 10101101. Bytes that break this pattern are invalid UTF-8.
提示“不是有效的 UTF-8”怎么办？What if it says the bytes are not valid UTF-8?
检查提示里指出的那个字节：常见原因是少了一位或多了一位、复制时丢了最后几个字节，或者数据本来就不是 UTF-8（例如 GBK 或纯二进制数据）。如果只想先看看内容，可以把“遇到无效字节”改为“替换为 �”。Look at the byte it points to. Common causes are a missing or extra bit, the last bytes lost while copying, or data that was never UTF-8 (GBK or raw binary, say). To see the rest of the text anyway, set Invalid bytes to Replace with �.
输入和输出是什么样的？What does the input and output look like?
例如在「二进制转 UTF-8 文本（解码二进制字节）」中输入 01001000 01101001，输出为：Hi（⏎ 表示换行）。For example, the Convert Binary to UTF-8 turns the input 01001000 01101001 into: Hi (⏎ marks a line break).
有哪些选项可以调整？What options can I adjust?
「二进制转 UTF-8 文本（解码二进制字节）」的设置：「遇到无效字节」可选 报错并指出位置、替换为 �（默认 报错并指出位置）。改动任一选项后结果会按新设置重新生成。Settings in the Convert Binary to UTF-8 — "Invalid bytes": Show an error, Replace with � (default Show an error). Changing any option regenerates the result with the new setting.
编码和加密有什么区别？Is encoding the same as encryption?
编码（如 Base64、URL 编码）可直接还原，不提供保密性；加密需要密钥。「二进制转 UTF-8 文本（解码二进制字节）」的处理全部在本地完成。No. Encoding (Base64, URL…) is reversible by anyone; encryption needs a key. The Convert Binary to UTF-8 works fully offline in your browser.
「二进制转 UTF-8 文本（解码二进制字节）」免费吗？需要注册吗？Is the Convert Binary to UTF-8 free? Do I need an account?
「二进制转 UTF-8 文本（解码二进制字节）」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Convert Binary to UTF-8 is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.