⬛ PDF 转灰度PDF to Grayscale

使用说明与常见问题How-to & FAQ

「PDF 转灰度」是什么？What is the PDF to Grayscale tool?

把每页渲染为灰度图后重新嵌入（栅格化）。本地处理。可设置「打开密码」、「DPI」。Rasterize each page to grayscale and rebuild the PDF. Processed locally. Settings: Password, DPI.

如何使用「PDF 转灰度」？How do I use the PDF to Grayscale tool?

在「PDF 转灰度」中，选择或拖入文件，按需设置「DPI」等选项，然后点击「转灰度」按钮即可。加密的 PDF 选好后会先出现「打开密码」栏和「打开」按钮，输入密码点「打开」后再继续。In the PDF to Grayscale: Choose or drop your files, set "DPI", then click "To grayscale". For an encrypted PDF, a Password field and an Open button appear after you choose it — enter the password and click Open first.

矢量？Vectors?

会栅格化，文字不再可选中。Pages are rasterized; text is no longer selectable.

有哪些选项可以调整？What options can I adjust?

「PDF 转灰度」的设置：「打开密码」可留空；「DPI」默认 96；可选文件：PDF。每次生成结果都按当前设置处理。Settings in the PDF to Grayscale — "Password" optional; "DPI" default 96; files: PDF. The result always uses the current settings.

「PDF 转灰度」免费吗？需要注册吗？Is the PDF to Grayscale free? Do I need an account?

「PDF 转灰度」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 PDF to Grayscale is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.