Secure Your Tabs with Military-Grade Protection
Password-protect any browser tab or lock entire domains with persistent protection. Ultimate privacy, zero compromise.
Coming soon on Apple Safari (waiting for salary to sponsor Apple’s $99/year).
See Locksy in Action
Watch how easy it is to protect your browser tabs
Introducing Domain Lock
Lock entire domains at once with intelligent patterns. The most powerful way to protect multiple tabs automatically.
Lock Entire Domains
Lock all tabs matching a domain pattern like *.google.com or github.com with one action
Persistent Protection
Domain locks persist across browser restarts and sessions—set it once, protected forever
Auto-Lock New Tabs
New tabs matching locked domain patterns are automatically protected the moment they open
Unlock Preferences
Choose to unlock only the current tab or all tabs for a domain. Locksy remembers your choice
Wildcard Support
Use *.example.com to lock all subdomains or example.com for exact domain matching
Domain Manager
Dedicated interface to view, manage, and configure all your locked domains in one place
Ever Worry About Someone
Seeing Your Sensitive Tabs?
You're not alone. Millions of people share devices and work in public spaces.
Your private information is just one glance away from being exposed.
Banking
Banking websites left open on shared computers
Private messages and confidential emails
Work
Work documents with sensitive information
Shopping
Shopping history and payment details
Privacy
Personal browsing you'd rather keep private
Family
Family using the same computer
Locksy Solves This Problem
Lock any tab with a password in seconds. Simple. Secure. Private.
Everything You Need.
Nothing You Don't.
Built with security and simplicity in mind. Protect your sensitive tabs without compromising on performance.
Keyboard Shortcuts
Lock tabs instantly with Alt+Shift+9, open manager with Alt+Shift+0, or lock all tabs with Alt+Shift+8. Fully customizable shortcuts.
Visual Lock Indicators
Red lock icon on tab favicons and real-time badge counter on extension icon. Always know which tabs are protected at a glance.
Domain Lock
Lock entire domains with wildcard patterns. Auto-lock new tabs matching locked domains with persistent protection.
One-Click Locking
Lock any tab instantly with a single click. No complex setup needed.
PBKDF2 Key Derivation
600k iterations with SHA-256 - OWASP 2023 compliant. Military-grade password hashing with 120 years crack resistance.
Rate Limiting & Brute-Force Protection
Advanced timing attack protection with exponential backoff. Prevents automated password cracking attempts.
Incognito Mode Support
Works seamlessly in private browsing windows with same security.
Ultra Lightweight
Zero performance impact on your browser. Optimized for speed.
8+ Security Layers
Multiple protection mechanisms prevent bypass attempts.
100% Offline
Everything stored locally on your device. No data sent to servers.
Smart Unlock Preferences
Choose to unlock just the current tab or all tabs for a domain. Locksy remembers your preference.
No Account Required
Install and start protecting tabs in 30 seconds.
Lightning-Fast Keyboard Shortcuts
Lock tabs at the speed of thought. No mouse needed.
Lock Current Tab
Instantly lock the tab you're currently viewing
Open Domain Lock Manager
Quick access to manage all your locked domains
Lock All Tabs
Lock all compatible tabs in the current window at once
Fully Customizable
Personalize all shortcuts in your browser's extension settings.
Lock Icon
Red lock overlay on tab favicons. Spot protected tabs instantly.
Badge Counter
Real-time counter on extension icon. Never lose track of locked tabs.
Get Started in 3 Simple Steps
Start protecting your sensitive tabs right now.
Install & Set Password
Add Locksy to your browser and create your master password in 30 seconds.
Click & Lock
Click the Locksy icon and hit "Lock Current Tab". Your tab is instantly secured.
Password-Protected
Enter your master password to regain access. Only you can unlock your tabs.
Your Privacy is Our Priority
Built with security-first principles. Zero compromises.
No Account Required
Start using Locksy immediately without sign-up
Zero Data Collection
We never see, store, or transmit your browsing data
Open Source Code
Inspect the code yourself on GitHub
PBKDF2 with 600k Iterations
120 years crack resistance with timing attack protection
Rate Limiting & Brute-Force Protection
Advanced protection against automated cracking attempts
No Admin Backdoors
Only you can unlock your tabs
Why Choose Locksy?
The only extension designed specifically for tab protection.
| Feature | Locksy | Browser Profiles | Tab Managers |
|---|---|---|---|
| Lock Individual Tabs | ✅ | ❌ | ❌ |
| One-Click Operation | ✅ | ❌ | ❌ |
| No Account Required | ✅ | ✅ | ❌ |
| 100% Offline | ✅ | ✅ | ❌ |
| Incognito Support | ✅ | ✅ | ❌ |
| Free Forever | ✅ | ✅ | ❌ |
| Military-Grade Security | ✅ | ❌ | ❌ |
Trusted by Privacy-Conscious Users Worldwide
See what real users are saying about Locksy.
"Finally! A simple way to lock tabs without switching profiles. Exactly what I needed for my banking tabs."
Sarah M.
Financial Analyst
"Perfect for when I'm working at coffee shops. I can step away without worrying about my open tabs."
Jake T.
Freelance Developer
"The incognito mode support is a game changer. Same password works everywhere. Simple and effective."
Anonymous User
Privacy Enthusiast
"As a security professional, I appreciate the multiple protection layers. This is how you build secure extensions."
Alex K.
Cybersecurity Engineer
"My family shares a computer and this gives everyone their privacy. Easy for everyone to use!"
Maria L.
Teacher
Average Rating
Privacy Score
Data Breaches
Free Forever
Frequently Asked Questions
Everything you need to know about Locksy.
Ready to Protect Your Tabs?
Join thousands of users securing their browsing privacy with Locksy. Start protecting your sensitive tabs in 30 seconds.
Works on Firefox, Chrome, Edge, Brave, Opera, Comet, Vivaldi, Arc & more