有什么办法可以防止用户在本地保存文档? [英] Is there any way to keep users from saving documents locally?

问题描述

如果用户在我的网站上查看文档(例如，表示某些机密信息的pdf文件)，那么我是否可以阻止他们将文档保存在本地?

If users view documents on my website (for example a pdf file that represents some confidential information), is there anyway I can prevent them from saving the document locally?

推荐答案

用户一旦将PDF下载到浏览器，他们就可以执行任何操作.他们可以将其保存到硬盘中的其他位置.即使您以某种方式禁用了此功能，任何人都可以使用第三方应用程序拦截网络流量并以这种方式保存PDF.

Once the user has downloaded your PDF (to the browser) they can do anything with it. They can save it to elsewhere in their hard drive. Even if you somehow disabled this anyone could intercept the network traffic using a third-party application and save the PDF that way.

您最好的选择是某种数字版权管理工具，即使用户下载了PDF，也可以阻止其分发PDF.例如， FileOpen 或Adobe Content Server.如您所见，此类工具可以(从技术上)阻止打印，迫使内容过期等.

Your best bet is some kind of Digital Rights Management tool to stop the user from distributing the PDF even if he or she downloads it. For example, FileOpen or Adobe Content Server. As you can see, such tools can (technically) prevent printing, force the content to expire, etc.

请注意，这对于可能意外下载或分发数据的用户最有用. 恶意用户可以规避这些限制，例如通过截取每个页面的屏幕快照并打印出来来绕过打印限制.

Note that this is most useful for users who are likely to accidentally download or distribute the data. Malicious users may be able to circumvent these restrictions, e.g. bypassing the print restriction by taking a screenshot of each page and printing that instead.

这篇关于有什么办法可以防止用户在本地保存文档?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！