Mask document titles before sharing your screen

A screen share can expose more than the document you meant to present. Switch between apps and a client may see a file name in the Windows taskbar or Alt+Tab switcher: a customer name, project code, draft deal, or internal incident label. The document can stay closed and the title can still give away useful context.

Title masking addresses that small but consequential leak. NoCapture includes title masking to replace real titles in Alt+Tab and the taskbar. It is available for Windows 10/11, macOS, and Linux. The goal here is narrow: keep a window’s name from announcing itself while you move between work and a presentation.

Separate the title from the contents

Start by deciding what you need to conceal. If the window’s name is the risk, title masking is relevant. If the document itself must not appear in the shared image, masking its title is not enough. NoCapture also offers per-window cloaking, which hides selected windows from screen-sharing applications such as Zoom, Teams, and OBS.

That distinction matters during a live handoff. A neutral-looking window label does not make a visible spreadsheet safe to share. Conversely, if a sensitive window stays off the shared image but its name appears in a taskbar or app switcher that is also being shared, the title remains a separate exposure to check.

Prepare the Windows desktop

1. List the names you do not want exposed. Check open document titles, project names, and any other window labels that could reveal client or internal information. Include windows you plan to switch to during the call.
2. Apply title masking in NoCapture. Use the title-masking feature for the relevant windows. The feature replaces real titles in Alt+Tab and the taskbar. Keep the aim simple: a viewer should not be able to infer the file or client from a label.
3. Check the taskbar and switcher in the actual sharing setup. Start the meeting or broadcast preview you intend to use, then switch between the same apps you expect to use with the client. Look for original titles in both the taskbar and Alt+Tab. Do not assume that a title is hidden just because the document itself is not on screen.
4. Check the document separately. If any window’s contents are confidential, cloak that window as well. Use NoCapture’s live preview to inspect what the sharing application sees before the client joins.

NoCapture’s global hotkeys can toggle its protections, but a last-second toggle is easy to forget. Make title checks part of the call setup instead: open the necessary apps, verify the labels and shared view, then begin. If you change windows or add a file after that check, repeat it.

Do not assume the Mac behaves like Windows

macOS does not use the Windows taskbar or Alt+Tab terminology in the same way. It has its own app-switching and Dock surfaces, and what appears can depend on how you work. NoCapture lists macOS as a supported platform and includes title masking, but the Windows-specific wording is not a promise that every Mac surface behaves identically.

On a Mac, test the exact sequence you plan to use: switch apps, bring up the relevant app or window view, and inspect the shared output. Check the Dock and app-switching views independently. If the original title still appears in a surface you share, do not treat that surface as protected until you have confirmed otherwise. The same rule applies to any operating system: verify the names viewers can actually see.

Make the check repeatable

Keep a short pre-call routine: review open windows, apply title masking, cloak any window whose contents must remain private, and inspect the live preview while switching apps. This catches both kinds of mistake—the content shown by an active window and the metadata exposed by its label.

For teams that need a broader screen-share privacy workflow, a financial review call setup is useful background on testing the full sharing path before discussing client records. For an individual call, the practical point is simpler: treat window titles as information, not decoration, and test them in the view your audience will receive.

NoCapture has a Free plan covering two windows, with Pro and Teams plans also available. Whatever setup you use, do not rely on a masked label as a substitute for hiding sensitive content. Check the title, check the image, and check again after changing apps.