Privacy Toolkit for WhatsApp Web, from Privacy Toolkit, is a Chrome extension that guards visible WhatsApp Web content on shared laptops. It blurs messages, contact names and media, suppresses 'Online' and 'Typing...' indicators, and adds a password-protected screen lock for the web interface. The extension also offers per-element toggles and hover-to-unblur behaviour, aimed at professionals, students, and casual users who need quick visual privacy in public or semi-public settings.

How effective is it at preventing shoulder surfing?

The extension reduces casual onlookers' ability to read conversations by applying selective visual obfuscation to message previews, chat history, contact names, profile pictures and media. Its hover-to-unblur mechanic lets a user temporarily reveal a single item without removing protection from the rest of the interface, which limits exposure during quick glances in crowded environments. Users report this behaviour as useful in offices and cafes.

Which browsers does it run on and how heavy is it?

It runs in Chrome and other Chromium-based browsers, so it fits standard desktop browser workflows rather than native desktop apps. Community feedback notes the extension is lightweight and easy to configure, which suggests modest CPU and memory impact during normal use. Installation as a browser add-on keeps the tool within the browser sandbox and avoids modifying WhatsApp server behaviour.

Can you tailor what is hidden and how it is revealed?

Granular toggles and configurable reveal rules let users match different privacy needs. The toolkit provides separate switches for text, images and UI indicators, and it supports a password-protected screen lock to block access when the device is left unattended. These controls let users choose temporary reveal behaviour by hover or keep elements obfuscated for continuous protection.

A practical choice for browser-based, on-screen privacy needs

The extension is a practical option for people who want fast, local visual privacy while using WhatsApp Web in public. It focuses on protecting what appears on-screen and does not change message storage or network-level visibility, so it complements broader privacy practices rather than replacing them. Best used when browser access is the primary way you run WhatsApp.