The complaint that sends most people looking for a Poper Blocker alternative is a good one: a pop-up blocker that shows you its own pop-ups.

The promotional overlay problem

Users report the extension displaying its own promotional overlay — typically an offer to stop seeing cookie notices — on ordinary browsing, sometimes covering the page content underneath.

Whatever the intent, it's the wrong behaviour for this category specifically. Someone installs a pop-up blocker because interruptions bother them. An interruption from the blocker isn't a smaller version of the problem; it's the same problem wearing a different badge.

The narrower issue: it only does pop-ups

Poper Blocker is built around pop-ups, overlays and new-tab redirects. That's a real and useful job — those are the most aggressive formats on the web — but it means banner ads, in-feed ads and trackers largely aren't its concern.

So people run it alongside a general features" class="doc-internal-link">ad blocker, and then hit the thing that catches everyone out: on Chrome and Edge, extensions share a limited budget for blocking rules. Two blocking extensions can leave each with fewer active rules than either would have had alone. The pairing that looks like more coverage can quietly deliver less.

About the permissions

Reviews often flag that Poper Blocker requests access to every site you visit. That's worth understanding properly rather than treating as a red flag on its own.

Every ad blocker needs that access, ours included. An extension cannot block something on a page it isn't permitted to see. There's no version of this category that works with narrower permissions.

So the permission isn't the question — who holds it is. That's a question you should ask about any blocker you install, including this one, and the answers worth looking for are the same each time: is the source code public, what does the privacy policy actually commit to, and does the extension do anything you didn't ask for. The promotional overlay is relevant here mainly because it's an example of the third.

What to switch to

uBlock Origin

Handles pop-ups, ads and trackers in one extension, so the two-blocker problem disappears. Free, open source, no company, no paid tier, and it doesn't advertise to you.

Chrome and Edge get uBlock Origin Lite under Manifest V3, which is narrower. The full version still runs on Firefox, Brave and Opera — see which browsers still support it.

DNDShield

Pop-up blocking is a dedicated part of what we do rather than a side effect, which is the relevant comparison if pop-ups are your actual problem. Our pop-up guard blocks pop-unders, drops window-open calls aimed at known ad and redirect hosts, limits how many windows one click can spawn, and checks what you clicked rather than only that you clicked — the trick sites use to make a stray tap count as permission.

It runs in the same extension as ad and tracker blocking, so there's no second extension competing for rule budget. On the overlay question: we show a small toast when a pop-up is blocked, and nothing else. No promotions.

Where we're narrower: Manifest V3, so the same platform limits as uBlock Origin Lite.

Your browser's own setting, first

Worth trying before installing anything. Chrome, Edge and Firefox all block basic pop-ups natively — here's where the settings are. It won't catch pop-unders, delayed triggers or hijacked clicks, but if your problem is the crude kind, it's free and already installed.

Switching cleanly

Uninstall rather than disable, for the rule-budget reason above. And note any sites you've allowlisted — that list doesn't transfer between extensions.

FAQ

Why does Poper Blocker show pop-ups? Users report a promotional overlay, usually about cookie notices. It's the extension's own message rather than a site's ad, but for a pop-up blocker it's a difficult thing to justify.

Is Poper Blocker safe? It requests access to every site, which every ad blocker does and cannot work without. The meaningful questions are whether the code is public, what the privacy policy commits to, and whether the extension does things you didn't ask for.

Do I need a separate pop-up blocker? Usually not. General blockers handle pop-ups too, and running two blocking extensions on Chrome or Edge can leave both with fewer active rules than one.

Will my browser's built-in blocker be enough? For simple pop-ups, often yes. It won't catch pop-unders, timer-triggered pop-ups, or clicks hijacked by a page-wide listener.

What's a pop-under? A window that opens behind your current tab, so you only find it when you close what you were reading. Browsers tend to allow windows opened after a click, and pop-unders exploit exactly that.

Get started: Install DNDShield · How to block pop-ups in every browser