What Google Discover actually is
Google Discover is a personalized feed that surfaces articles, videos and posts before someone has typed a search. It shows up in the Google app, on the mobile Google.com homepage and in Chrome’s new-tab page on phones. The feed draws on signed-in activity such as searches, watches and follows, which means it is built to anticipate interest rather than answer a specific query. For marketers, that removes the usual lever: there is no keyword to rank for.
How cards get selected
Eligibility is mostly passive. Once a page is indexed and meets Discover’s content policies, it can appear without any special tag or sitemap. But appearing is not guaranteed. Google layers a personal interest model on top of the same helpfulness and reliability systems used in Search, and the feed depends on Web & App Activity being enabled. Taps, topic follows and the 2026 free-text “Tailor your feed” control all shape the mix.
Images do a lot of work. Google recommends pictures at least 1,200 pixels wide, above 300,000 total pixels and in a 16:9 ratio. A 1,280 x 720 image clears the threshold, and large image previews can be enabled through the max-image-preview:large robots directive or AMP. The og:image tag or schema markup influences which visual is chosen, and Google advises against logos and text-heavy graphics.
What changed in 2025 and 2026
Discover moved beyond phones. Google announced a desktop version in April 2025 and began rolling it out in markets including New Zealand and Australia. In September 2025, posts from X, Instagram and YouTube Shorts were added alongside a follow button for publishers and creators. AI-generated preview cards launched in October 2025 in the US, South Korea and India.
The bigger story is volatility. A December 2025 core update produced sharp Discover losses within 48 hours for some publishers. Then, in February 2026, Google ran the first Discover-only core update, aimed at US English users. It sought to favor locally relevant sites, reduce clickbait and reward topic-level expertise. The geographic focus drew sharp criticism; GRV Media co-founder Vic Daniels called it “The Invisible Border.” Separately, vendor data from Marfeel in December 2025 found AI Summaries in 51% of feed positions across the US, Brazil and Mexico, with 77% of US summary exits defaulting to inline YouTube plays. That data has not been independently replicated, but it signals why publisher supply is shifting.
Why it matters for traffic and media budgets
Discover has become the biggest Google referral source for many news publishers. Chartbeat data covering about 2,000 news and media sites found Discover accounted for two-thirds of Google referrals by August 2025. NewzDash put it at 67.51% of Google traffic to news organizations. But share is not volume. Chartbeat later measured Discover page views down 15% in the year to December 2025, compared with a 34% drop for Google Search. That makes Discover the larger slice of a smaller pie.
For media buyers, the impact is indirect but material. A Discover click that lands on a publisher page can generate programmatic display, video and native impressions. A session that stays inside the feed does not. Algorithm changes therefore shift open-web supply without notice.
How to play it defensively
Google itself describes Discover traffic as less predictable than keyword search. Treat it as supplemental, and focus on these levers:
- Use the dedicated Discover performance report in Search Console. It shows impressions, clicks and CTR, but no queries or average positions.
- Use large 16:9 images, enable large image previews, and avoid logos or text-heavy creative.
- Build topic-level expertise across clusters of content; reduce clickbait and low-context formats.
- Avoid material Google may filter out, including petitions, forms, job applications and satire without context.
- Diversify acquisition channels so a core update cannot wipe out your visibility overnight.
Paid reach is separate. Discover inventory is bought through Demand Gen or Performance Max, not through the organic feed. Demand Gen has allowed advertisers to switch the Discover channel on or off since March 2025, and Discover carries no creator revenue share. Recent controls such as Search profiles, the April 2026 “You asked to see” label and AI-performance reports give publishers more transparency, but they do not make the feed predictable.
The play is to optimize for Discover while ensuring it is never your only source of growth.
Source: PPC Land
