--- title: Document Security & Control | Secure Document Viewer | FileOpen description: Secure and control documents without impacting user experience. Learn more about the secure document viewer without client software from FileOpen. --- [![fileopen logo.jpg](https://www.fileopen.com/hs-fs/hubfs/Website%20Redesign/file%20open%20logo.jpg?width=398&name=file%20open%20logo.jpg "fileopen logo.jpg")](https://www.fileopen.com) # Secure Web Files ![](https://www.fileopen.com/hs-fs/hub/74620/file-1484193141.png?width=250&height=250&name=file-1484193141.png "OPN.png") [![Request a Demo](https://no-cache.hubspot.com/cta/default/74620/7b2197cb-f87e-40d9-a08c-3a421e82b8fe.png)](https://cta-redirect.hubspot.com/cta/redirect/74620/7b2197cb-f87e-40d9-a08c-3a421e82b8fe) ### Prevent Saving and Sharing of Files in Any Web Browser ** #### Stronger Encryption Unlike other browser add-ons that use session cookies or Javascript to "lock" Web pages, FileOpen's Web Viewer encrypts Web files into OPN format with enterprise-grade AES 256-bit encryption. ** #### Control Access Prevent saving or download of your Web documents, prevent or limit printing, expire and revoke access, and more. ** #### No Plug-ins or Downloads For user environments that will not allow or tolerate installation of add-ins or plug-ins, FileOpen Web Viewer is the solution. Your users can view protected documents simply using their Web browser (must have Flash Player v.11 or higher). ** #### Support iOS and Android Devices Secure OPN files can also be delivered to iOS and Android devices using the FileOpen Viewer app, available on the [Apple App Store](http://itunes.apple.com/us/app/fileopen-viewer/id520287055?ls=1&mt=8) and [Google Play Stores. ](https://play.google.com/store/apps/details?id=air.com.fileopen.ios&hl=en) ** # FileOpen Access Controls for OPN Files ** #### Expiration Expire access after a specified date or number of uses.  ** #### Prevent Copy/Save Stop copying or saving (of file and of contents). ** #### Revocation Disable access to files at any time, from anywhere - instantly. ** #### Control Printing Prevent or limit printing to # of prints or device. ** #### Watermark Overlay user-identifying data on digital or printed documents. ** #### Offline Access Enable time-limited access for airplane mode etc. Learn how you can secure Web files with [RightsManager](https://www.fileopen.com/products/rightsmanager/), [RightsServer](https://www.fileopen.com/products/rightsserver/) or our [Developer Toolkit](https://www.fileopen.com/products/developer_toolkit/). [![Contact Us](https://no-cache.hubspot.com/cta/default/74620/46ea00af-091b-4cb9-bdba-41a02f178419.png)](https://cta-redirect.hubspot.com/cta/redirect/74620/46ea00af-091b-4cb9-bdba-41a02f178419) ###### Support [Get The Plugin](http://plugin.fileopen.com/all.aspx) [Plugin FAQ](https://www.fileopen.com/products/client-faq) [Troubleshooting FAQ](https://www.fileopen.com/products/troubleshooting-faq) [Submit a Case](https://www.fileopen.com/request-tech-support) ###### Products [FileOpen RightsManager](https://www.fileopen.com/products/rightsmanager) [FileOpen RightsServer](https://www.fileopen.com/products/rightsserver) [FileOpen Developer Toolkit](https://www.fileopen.com/products/developer-toolkit) [Client Overview](https://www.fileopen.com/products/fileopen-client-overview) ###### Resources [Learning Resources](https://www.fileopen.com/fileopen-whitepapers) [Solutions Overview](https://www.fileopen.com/document_security_solutions/industry) [Document Security Blog](https://www.fileopen.com/blog) ###### About [About FileOpen](https://www.fileopen.com/company/about-fileopen) [Why FileOpen?](https://www.fileopen.com/company/why-fileopen) [Partners](https://www.fileopen.com/company/partnering-opportunities) [Privacy Policy](https://www.fileopen.com/company/privacy-policy) ![fo_logo_249x65.gif](https://www.fileopen.com/hs-fs/file-15427397-gif/images/fo_logo_249x65.gif?width=249&name=fo_logo_249x65.gif "fo_logo_249x65.gif") 1010 Fair Ave, Suite A, Santa Cruz CA 95060 | [831.706.2170](tel:%20+18317062170) | [info@fileopen.com](mailto:info@fileopen.com) Sign up for email udpates © 2026 FileOpen Systems Inc. ![](https://googleads.g.doubleclick.net/pagead/viewthroughconversion/1071657555/?guid=ON&script=0)