WaMask - Privacy Extension for WhatsApp Web

WaMask is a privacy extension for WhatsApp Web that blurs messages, media, profile pictures, and contact names and can lock your screen with a password. Built for Chrome (Manifest V3), it works only on web.whatsapp.com and keeps everything local on your device. Why use WaMask? If you use WhatsApp Web at work, in a coworking space, on a shared screen, or on public transport, WaMask hides sensitive content until you choose to reveal it. Content stays blurred until you hover over it so your chats stay private even if someone glances at your screen. 🔒 Blur & Hide (each toggle independently, with adjustable intensity) - Chat messages blur all messages in the open conversation - Last message previews blur the chat list on the left sidebar - Media previews blur images, videos, and stickers separately from text - Media gallery blur thumbnails when viewing an image or video - Text input field lighten typed text so it's hard to read over your shoulder - Profile pictures blur avatars (small, normal, or large blur strength) - Contact and group names blur names across the interface ⚙️ Blur behavior - No transition delay remove the reveal delay on hover - Unblur all on app hover reveal everything at once when hovering the WhatsApp Web area - Idle blur automatically re-blur everything after a set period of inactivity, with adjustable idle time and blur intensity 🔐 Screen Lock with Password - Lock WhatsApp Web behind a full-screen blurred overlay - Set a password (minimum 4 characters) on first use - Unlock only with your password - Forgot your password? Reset it directly from the lock screen a new password is sent to your own WhatsApp chat - Passwords are never stored in plain text only a local hash + salt, on your device 🎨 Interface - Side panel (not a popup) for settings, opened from the toolbar icon - Light, dark, or system theme - Available in English and Portuguese (BR) - Master on/off switch, plus keyboard shortcut Alt+X to toggle blurring instantly - Settings sync via Chrome Sync when enabled Your privacy, protected WaMask has no analytics, no ads, and no external server. All settings theme, language, blur preferences, and the lock screen password hash are stored only on your device. WaMask requires only storage and sidePanel permissions, plus access limited to web.whatsapp.com. WaMask is an independent extension and is not affiliated with WhatsApp or Meta. Full privacy policy available in-app. Frequently asked - How do I hide messages on WhatsApp Web? Enable "Chat messages" and "Last message previews" blur in the WaMask side panel. - How do I lock WhatsApp Web with a password? Turn on Screen Lock and set a password on first use. - How do I hide typing so people can't read over my shoulder? Enable "Text input field" blur. How do I quickly turn off all blurring? Press Alt+X or use the master switch.