If you need to add stuff to a PDF document, now you can do that online with { -brand-name-firefox }. Open the PDF in { -brand-name-firefox } and click the Text or Draw buttons in the upper right corner to make changes to your document. Download the file to save it with your changes.
如需向 PDF 文档添加内容，现在用 { -brand-name-firefox } 即可在线完成。在 { -brand-name-firefox } 中打开 PDF 文档，然后点击右上角的“文本”或“绘图”按钮修改文档，最后下载文件即可保存您的更改。