In just a few days, a simple yet brilliantly adorable browser extension has taken the internet by storm. Cat Gatekeeper, created by Japanese indie developer @konekone2026 (also known as ZOKUZOKU or ぞくぞく), has captured the hearts of millions with its unique approach to fighting doomscrolling: deploying a giant, smug orange cat that literally hijacks your screen when you've spent too much time on social media.
The concept is as funny as it is effective. Users set a time limit (default is 60 minutes) for platforms like X, Instagram, TikTok, YouTube, Reddit, Facebook, Threads, and Bluesky. Once the timer runs out, a massive chubby orange cat appears, overlaying the entire page and refusing to budge until your mandatory break (default 5 minutes) is over. No ignoring notifications, no closing a small popup - the cat demands attention, and you have no choice but to step away. It's cute, relentless, and surprisingly motivating.
The Chrome version launched recently and quickly went viral. The developer's demo video racked up millions of views and tens of thousands of likes on X, with users sharing hilarious reactions and praising how the extension finally makes screen time limits feel fun rather than punitive. Best of all, it's completely free, contains no ads, and collects zero user data - a refreshing stance from an independent creator.
Now, the good news for Firefox users: the wait may soon be over.
Original author @konekone2026 recently announced that the Firefox version of Cat Gatekeeper has been submitted to the Mozilla Add-ons store and is currently under review. This update comes as excitement around the extension continues to grow, with many users on X and other platforms eagerly requesting broader browser support.

Caption: @konekone2026 sharing the update that the Firefox add-on has been submitted for review.
The developer has been responsive to community feedback, and this move toward Firefox demonstrates a commitment to making the tool accessible to more users. Firefox users have been vocal in the comments sections, with many expressing relief that the "cat guardian" will soon protect their browsing habits too.
Most productivity tools rely on guilt, statistics, or easily dismissible notifications. Cat Gatekeeper takes a completely different route - it uses humor and a memorable visual interruption. The giant cat isn't just blocking content; it's embodying the classic "cat on keyboard" experience that every pet owner knows all too well. It's playful enforcement rather than strict parental control.
The extension targets the biggest time sinks on the modern web. Whether you're mindlessly scrolling through reels, getting lost in comment sections, or refreshing feeds for the hundredth time, Cat Gatekeeper steps in at the right moment with its furry authority. Once the cat appears, interaction with the site becomes impossible until the break timer completes, gently forcing a moment of real-world detachment.
Beyond the browser extensions, the developer and community have been discussing potential expansions, including desktop applications for Windows and macOS that would work system-wide (not limited to one browser). There's also strong demand for a mobile version, although that presents more technical challenges due to platform restrictions.
For now, the focus is on polishing the Chrome experience and getting the Firefox version live. Once approved by Mozilla's review team, Firefox users will be able to search for "Cat Gatekeeper" directly in the Add-ons store or follow the official links shared by the developer.
In a world full of serious productivity apps, sometimes the best solution is the silliest one - a determined feline that knows exactly when you've had enough internet for the day.
Would you let a giant orange cat control your screen time?