On August 20, 2026, Google bundled a personalization update across Search, Discover, and News, and inside it was a new "Preferred Source" button for publishers. It's two lines of HTML. When a reader clicks it, they're returned instantly to the page they were reading, and behind the scenes their site gets added to that reader's "preferred sources" list — the set of sites Google gives priority to in that person's future Search, Discover, and AI answers.
Google's announcement gave exactly one hard number: "people have already selected more than 600,000 unique sources." Other coverage puts the May figure at around 345,000 — meaning the count nearly doubled in three months.
The feature isn't new. What changed is who can offer it
"Preferred sources" as a concept already existed. Google opened this up on the reader side earlier this year — from Search settings, a reader could go pick sites they liked. But that only worked if the reader went looking for the setting first.
What's new is the direction: publishers can now invite the registration directly, from inside their own page. The simplest implementation, per Google's own Search Central docs, is this:
<script async src="https://news.google.com/swg/js/v1/publisher.js"></script>
<div google-add-preferred-source-btn></div>
Add those two lines and a localized, device-aware button renders automatically. If JavaScript isn't an option, a plain deep link does the same job.
The reading: this isn't a new-traffic device, it's a repeat-visit registration device
The easy mistake here is treating this as a way to get found. It isn't. A site that doesn't show up in search today won't start showing up because of this button. What it actually does is take someone who already landed on your page once, and register them so Google is more likely to surface you again the next time they search. No new visitor appears because of the button alone — instead, a visitor you already worked hard to get becomes someone more likely to see you a second time.
That's a different layer of problem than raw search exposure. Growing exposure is the slow work of content and backlinks compounding over time; this button is a short lever that turns exposure you already earned into something repeatable for the people who already showed up. Because each individual visitor matters more on a small site, this device arguably fits low-traffic sites better than large ones.
What's confirmed and what isn't — The only number Google published is the registration count: "600,000+ sources selected." Neither Google nor any of the coverage checked here offers quantitative evidence that those registrations actually translate into more clicks or traffic. The official documentation also states a real constraint: the button only registers at the domain or subdomain level — a subpath like
example.com/blogcannot be registered on its own (confirmed against the documentation as of 2026-08-26).
If your site gets 100 visitors a week
At that scale, adding this button costs under five minutes: paste two lines anywhere on the site and forget about it. But it's worth being precise about what it does — it's a repeat-visit device, not a traffic-growth strategy. If the immediate problem is that the site barely shows up in search at all (as this project's own numbers show — 65 impressions, 0 clicks), content and sourcing come first, not this button. But if even a small number of visitors are already landing on the page, this is the cheapest device available for holding on to them.