NO SUS lets you share encrypted, one-time notes and file links, create watermarked or traceable PDFs, and use a private chat across screens.

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Get a dedicated desktop app for NO SUS on Mac, Windows, and Linux with WebCatalog Desktop.

  • Launch NO SUS directly from your Dock or taskbar.
  • Work without distractions in a dedicated window, separate from your browser tabs.
  • Manage multiple NO SUS accounts and switch between them without logging out.

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NO SUS is for people who need to share sensitive notes or files without leaving a permanent link or asking recipients to create an account. Create an encrypted-in-your-browser note or file link that can be opened once; after it is opened, the content is deleted from the server. A link can contain a note or up to 10 files, with a 50 MB limit. For documents that need more control than a one-time link, NO SUS offers watermarked PDFs that show the viewer’s email and record opens, plus traceable copies made for individual readers to help identify which copy was leaked. On Android, PDFs can be opened in NO SUS and screenshots are blocked; in a browser, pages are watermarked and logged, but screenshots cannot be blocked. NO SUS also has a chat that can be opened on another screen by scanning a QR code and approving access from your phone. Files in this chat are kept in your Google Drive. The web app is suited to sharing passwords, private messages, PDFs, and other files; recipients can open one-time links without an account or the app. It may not fit situations where you need to prevent screenshots in a browser or ensure that downloaded or printed copies can be recalled.

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