📝 在线记事本（自动保存）Online Notepad

使用说明与常见问题How-to & FAQ

「在线记事本（自动保存）」是什么？What is the Online Notepad tool?

打开即用的在线记事本：输入内容自动保存在本机浏览器，关闭后再打开仍在；显示字数、行数，可打开和下载 .txt 文件。内容不上传服务器。A ready-to-use online notepad: what you type is saved automatically in this browser and is still there next time. It shows word and line counts and can open and download .txt files. Nothing is uploaded.

如何使用「在线记事本（自动保存）」？How do I use the Online Notepad tool?

在「在线记事本（自动保存）」中，按需设置「文件名」等选项，然后点击「下载 .txt」、「复制全部」、「清空」、「撤销清空」按钮即可。支持拖放文件。In the Online Notepad: Set "File name", then click "Download .txt", "Copy all", "Clear", "Undo clear". Drag-and-drop files is supported.

内容保存在哪里？Where is my text saved?

保存在你当前浏览器的 localStorage 中，只在这台设备、这个浏览器里可见，不会上传服务器。清除浏览器数据、使用无痕模式关闭窗口后内容会丢失，重要内容请下载为 .txt 备份。In this browser's localStorage, visible only on this device and browser, never uploaded. Clearing browser data or closing a private window erases it, so download important notes as .txt.

字数是怎么统计的？How are words counted?

用空格和标点分隔的词各算一个（英文、俄文、希腊文、阿拉伯文等都一样），中文、日文、韩文每个字算一个。字符数包含空格和换行，按用户看到的完整字符计算：👨‍👩‍👧 这样的组合 emoji 和 🇨🇳 国旗都算 1 个（极旧的浏览器不支持时按码位计算）。行数按换行符计算，所以末尾多一个换行就会多算一行（空白行）。Words separated by spaces and punctuation count one each (English, Russian, Greek, Arabic and so on), and each Chinese, Japanese or Korean character counts as one. The character count includes spaces and line breaks and counts what you see as one character: a combined emoji such as 👨‍👩‍👧 or a flag such as 🇨🇳 counts as one (very old browsers fall back to code points). Lines are counted by line breaks, so a trailing line break adds one (blank) line.

误点清空怎么办？I cleared it by mistake — what now?

清空后会出现“撤销清空”按钮，点击即可恢复上一次的内容（打开新文件覆盖时也一样）。如果清空后又输入了新内容，点“撤销清空”会恢复旧内容，同时把新内容暂存起来，再点一次可以换回，两份内容都不会丢。下载时，文件名没有常见的文本扩展名（.txt、.md、.csv 等）就会自动加上 .txt，例如 report.2026 会保存为 report.2026.txt。After clearing, an Undo clear button appears; click it to restore the previous text. The same applies when opening a file replaces your text. If you typed something new after clearing, Undo clear brings back the old text and keeps the new text aside; click it again to swap back, so neither is lost. When downloading, .txt is added unless the name already ends in a common text extension (.txt, .md, .csv …), so report.2026 is saved as report.2026.txt.

能多个标签页同时编辑吗？Can I edit in several tabs?

可以打开，但它们共用同一份存储，最后保存的标签页会覆盖其他的。建议只在一个标签页里编辑。You can, but they share one storage slot and the last tab to save wins. It is best to edit in one tab only.

处理大段文本会卡吗？Can it handle long text?

「在线记事本（自动保存）」在浏览器中直接处理，几 MB 以内的文本通常瞬间完成；文本不会离开你的设备。The Online Notepad runs in your browser; text up to a few MB is usually processed instantly and never leaves your device.

「在线记事本（自动保存）」免费吗？需要注册吗？Is the Online Notepad free? Do I need an account?

「在线记事本（自动保存）」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 Online Notepad is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.