A productivity Chrome extension for focus reduces distraction inside the browser through blocking, time limits and friction, rather than managing tasks or notes. The most effective ones layer several interruptions — daily limits, schedules, an impulse pause and a scroll stopper — instead of relying on a single block that is easy to ignore.

The browser is both your workspace and your biggest distraction

For most knowledge work, the browser is where the job happens — and where it falls apart. The same window that holds your docs, tickets and research is one keystroke away from an infinite feed. A productivity Chrome extension can help more than another standalone app because it works where the distraction actually lives, layering several interruptions instead of relying on a single block.

MonkeyBlocker takes that layered approach, combining Impulse Check, Scroll Stopper, a visible timer, smart schedules and per-site limits into one Chrome extension. It is not a to-do list, a calendar or a notes app — it solves a narrower, more stubborn problem: the automatic website visits that quietly drain your focus.

What kind of productivity extension this is

If your biggest productivity leak is "I opened a tab and lost 30 minutes," this is the tool for that specific problem. If you need task management, pair it with a dedicated app — the two do not overlap.

How limits, schedules and a visible timer protect work sessions

Focused work fails at the edges: the small gaps between tasks where you reach for something stimulating. Daily time limits give each distracting site a budget, smart schedules switch limits on during work or study hours and off the rest of the time, and the floating timer keeps remaining time visible on the page so a limit never ambushes you mid-scroll.

How the friction stack interrupts automatic habits

The reason a single block is too easy to ignore is speed: the gap between impulse and action is nearly zero. The pain "I open sites on reflex" maps to the Impulse Check, a short pause before a distracting site loads. The pain "one research tab becomes twenty" maps to the Scroll Stopper, which turns passive drift into a deliberate choice. The pain "I change my own limits in a weak moment" maps to Settings Lock, which requires typing a chosen sentence before rules or limits change. For social sites, Auto-Lockout adds more friction after time expires by logging you out, so continuing means signing in again. For accountability, an Accountability Partner can notify a chosen person about usage or broken rules.

Social Cleaner for the worst attention traps

Some sites you genuinely need, but their most addictive parts you do not. The Social Cleaner hides Shorts, Reels, homepages and recommendation rails while leaving the useful parts intact — you keep the tutorial or the message you came for and lose the algorithmic rabbit hole. If YouTube is your main trap, see the focused setup for hiding Shorts and limiting YouTube.

Best fit and non-fit

MonkeyBlocker is the right productivity extension if your work happens in Chrome or a Chromium browser and your core issue is distraction. It is not the right tool if you need a mobile app blocker, a system-wide lockdown or a project manager. It runs locally, needs no account and is free to start.

Add to Chrome — free
No account, no credit card, about a 2-minute setup. Works in Chrome and Chromium browsers like Edge, Brave, Opera, Vivaldi and Arc.

Related reading: a full Chrome website blocker, boundaries for social media at work, and our fair comparison of website blockers.

Frequently Asked Questions

Is this a productivity app or a website blocker?

Both, but narrowly. It is a productivity extension whose method is blocking and limiting distracting sites. It does not manage tasks, notes or calendars — it protects focus by reducing automatic browser distractions.

Does it replace a to-do app?

No. MonkeyBlocker deliberately stays out of task management. Pair it with whatever to-do or planning app you already use; it handles the distraction side those apps do not.

Can it help with YouTube and social distractions?

Yes. The Social Cleaner hides Shorts, Reels, homepages and recommendations, per-site limits cap time, and the Scroll Stopper breaks infinite feeds while keeping the parts you actually need.

Is MonkeyBlocker a good fit for me?

Good fit for Chrome-based focus when distraction is your core problem; less suited if you need a task manager, or blocking outside the browser such as mobile apps or the whole operating system.