Ads Make Your Browser Slow
A typical web page loads 50-100 additional requests just for ads and trackers. These include:
- Heavy video ad scripts (1-5MB each)
- Tracking pixels from 10+ companies
- Real-time bidding auctions (50-200ms delay)
- Auto-playing video ads
Blocking these removes that work entirely — the requests are never made, so nothing waits on them.
What blocking actually removes
We're not going to print a before-and-after table with specific seconds and megabytes in it. Those numbers vary by site, by connection and by day, and publishing one figure as though it were the figure would be dressing up a guess.
What blocking removes is concrete even without a number attached:
- The network requests for each ad and tracker, along with everything they would have pulled in afterwards
- The JavaScript those requests carry, which otherwise has to be downloaded, parsed and executed
- The iframes ads render into, and the memory each of those holds
- The layout shifts caused by ads arriving after the page has already drawn
How much that is worth on any given page depends on how much of it was there to begin with. The popup keeps a running count for your own browsing.
How features" class="doc-internal-link">Ad Blocking Speeds Up Browsing
1. Fewer Network Requests
Each ad requires multiple HTTP requests — the ad server, tracking pixels, bid requests, and the ad creative itself. Blocking them removes that whole chain rather than just the visible ad.
2. Less JavaScript Execution
Ad scripts are heavy. Google Ad Manager alone loads 500KB+ of JavaScript. Blocking this frees up CPU for the actual page content.
3. No Layout Shifts
Ads that load late cause the page to jump around (Cumulative Layout Shift). Blocking ads eliminates this completely.
4. Less Memory Usage
Each ad iframe uses 10-50MB of RAM. On a page with 5-10 ads, that's 100-500MB of memory just for ads.
How to Set Up
- Install DNDShield from the Chrome Web Store
- Browse normally — pages load faster immediately
- Check your stats in the DNDShield popup to see how many requests were blocked
FAQ
How much faster will my browser be? That depends on the page rather than on us. Ad-heavy sites — news, recipes, forums — carry the most to remove, so they change the most; a light page changes little. The popup's blocked-request count is the figure that actually reflects your browsing.
Will this save mobile data? Yes — anything blocked is never downloaded, and ad creatives and video are among the heaviest things on a page. How much that adds up to over a month depends on what you browse, so we won't quote an average.
Does the ad blocker itself slow down the browser? Modern ad blockers like DNDShield use Chrome's declarativeNetRequest API, which runs natively in the browser with near-zero performance overhead.