Lock any website
with a PIN.
Site Locker blocks a website from loading until the right PIN is entered - Reddit, banking, work tools, whatever you decide. Your PINs and locked-site list never leave your device.
Local
PINs
Everything you need,
nothing you don't.
A single, focused job - locking websites behind a PIN - done properly.
Lock Any Website
Lock an entire domain, or just a single page/path. Reddit.com, or just reddit.com/r/funny - your call.
Escalating Protection
3 wrong PINs triggers a 30s cooldown, then 60s, then 5 minutes. Brute-forcing your own PIN gets slower, not faster.
PBKDF2-SHA256
PINs are never stored in plain text. They're hashed with 100,000 PBKDF2 iterations before ever touching disk.
Master Switch
One toggle pauses every lock instantly - perfect for when you need the browser lock-free for a moment.
Dark & Light Themes
Pick a theme once - the popup, the full lock screen, and the instant relock overlay all match, everywhere.
Local by Design
Your master PIN, site PIN, and locked-sites list live only in your browser's local storage. We don't have a server for them - there's nothing to upload.
Three steps. That's it.
Set your PINs
Set a Master PIN to open the extension, and a Site PIN that unlocks any site you protect.
Add a site
Type a domain or a specific page into the vault. Free plan covers 1 site - Pro is unlimited.
It's locked
Any attempt to open that site - including switching back to an open tab - asks for the Site PIN first.
Free forever for 1 site.
Pro for everything else.
Every plan unlocks unlimited locked sites, auto-lock timers, and escalating protection. Pick a billing rhythm that fits.
Questions, answered.
No. Your Master PIN and Site PIN are hashed with PBKDF2-SHA256 and stored only in your browser's local storage. Nothing about your PIN or your locked-sites list is ever transmitted anywhere.
Because we never see your PIN, there is no recovery or reset flow - that's the tradeoff of it being fully local and hashed. Keep it somewhere safe. This also means forgetting a PIN is not covered by our refund policy.
The free plan locks 1 site. Pro removes that limit entirely, plus unlocks auto-lock timers and escalating protection tuning.
Yes - any regular http/https website. Local network addresses (like localhost or a router's admin page) can't be locked, by design.
Yes, anytime, directly from the extension's Pro panel via "Manage Sub," which opens your LemonSqueezy customer portal.