The Best Popup Blocker (strict) Alternatives in 2026

The Locale Switcher extension for Chrome and Firefox changes browser language settings and Accept-Language headers, with per-tab controls.

uBlock Origin is a content blocker for Chromium and Firefox browsers, described by its project as efficient, fast, and lean.

The arkenfox user.js wiki discusses browser extensions and recommends keeping them to a minimum because they have privileged browser access.

SB.js brings SponsorBlock to a bookmarklet or userscript for restrictive environments, with loader and standalone usage options.

This SponsorBlock wiki page lists third-party ports of the browser extension for other platforms and explains how to report issues.

Behind The Overlay is a Chrome and Firefox extension that closes website overlays with one button.

This article explains ways to filter ads and block popups on iPhone and macOS, including options for Safari and Apple's browser environment.

Use JShelter, a browser extension that mitigates JavaScript threats such as fingerprinting, tracking, and data collection.

Skip sponsored segments in YouTube videos with SponsorBlock, a crowdsourced extension and open API.

AdGuard's Popup Blocker is a userscript that blocks unwanted pop-up and pop-under windows in browsers that support a userscript manager.

Block ads across a network with Pi-hole, which filters DNS requests for connected devices.

Remove tracking elements from URLs automatically with the ClearURLs browser extension.

Pi-hole Tray is an unofficial Windows system tray app for monitoring and managing Pi-hole instances from the desktop.

Block hosts through DNS on Android with DNSNet, a DNS-based filtering app.

This curated blocklist identifies sites with AI-generated imagery for use with uBlock Origin or uBlacklist, including search-engine filtering.

DNS Speed Test is a browser-based tool for measuring DNS over HTTPS server speeds and comparing results for a location.

For Firefox, Chameleon reduces fingerprinting signals using per-origin deterministic noise across browser fingerprinting surfaces.

uBlock Origin Lite is the Manifest V3 version of the uBlock Origin project, with browser installation links listed on its project page.

HaGeZi publishes DNS blocklists for filtering ads, trackers, malware, and other unwanted domains.

Subscribe to a uBlock Origin list that blocks websites identified by its maintainer as AI-generated content farms.

This curated host file lists domains serving ads, tracking scripts, and malware for blocking through a hosts file.

This repository provides a setup guide for NextDNS, described as a DNS-over-HTTPS proxy with configuration options.

This privacy DNS project lists filtering for ads, ad tracking, and malware, alongside DNSSEC validation and several DNS protocols.

Technitium DNS Server is a DNS server project with source code and repository information hosted on GitHub.