Google Discover optimization: The Complete 2026 Guide

Discover operates on a fundamentally different model than Google Search. In Search, you optimize for a query. In Discover, you optimize for a user profile. Google builds an interest graph for each Discover user based on their search history, app usage, location patterns, and content engagement behavior. When your content matches a strong interest signal, Discover surfaces it in the feed regardless of when it was published.

The key difference from a ranking standpoint is recency. Traditional search heavily weights freshness for news queries, but Discover surfaces evergreen content for weeks or months if engagement remains strong. A deep-dive article published in January can still drive Discover traffic in June if its click-through rate and dwell time stay above the feed's internal thresholds.

Not all content is eligible for Discover. Google enforces three hard filters before content can appear in the feed.

Indexed and crawlable. The page must be indexed in Google and not blocked by robots.txt or meta directives. Discover is a Google property; only content that exists in Google's index can surface.

User-friendly on mobile. Discover is a mobile-first surface. Pages must pass Google's mobile-friendly test and meet Core Web Vitals thresholds, particularly Largest Contentful Paint under 2.5 seconds. A slow-loading page is automatically deprioritized regardless of content quality.

Content policy compliance. Discover enforces Google's content policies strictly. Misinformation, dangerous content, sexually explicit material, and hate speech are outright excluded. Google's 2025 policy update added stricter enforcement for health and financial content that lacks clear, authoritative sourcing.

Discover uses post-impression engagement as its primary ranking signal. Three metrics matter most.

Click-through rate. The percentage of users who tap on your card in the feed. Google measures this at the article level. Articles with CTR below the Discover average for your category lose impressions over time. Optimize headlines and card images to improve CTR without resorting to misleading titles.

Dwell time. The time a user spends on your page after clicking from Discover. Pages with short dwell times signal low value. Google's internal research shows that pages with dwell times under 10 seconds are unlikely to sustain Discover impressions. Long-form content with strong readability tends to outperform short-form content here.

Scroll depth. For article pages, Google tracks how far users scroll. Content that captures full-page reads earns more impressions. Use clear subheadings, short paragraphs, and visual breaks to keep users engaged through the entire article.

The Discover card image is the most visible element of your entry. Google pulls the Open Graph image (og:image) or a prominent page image. Requirements are explicit.

• Minimum resolution: 1200 pixels wide by 630 pixels tall (16:9 landscape)
• Maximum file size: 1 MB
• Supported formats: JPEG, PNG, WebP (WebP preferred)
• Text overlay on images: Use sparingly or not at all. Google's 2025 guidance discourages text-heavy card images because they perform poorly in A/B testing across the feed

Set a large, high-quality og:image tag on every page targeting Discover. Without it, Google auto-selects a thumbnail, which typically generates lower CTR.

Discover rewards consistency but penalizes volume for its own sake. Publishers that publish 5 to 15 articles per week with strong engagement signals see better Discover performance than those publishing 50 low-quality articles. Focus on content that matches demonstrable user interests. Google's My Ad Center data gives users direct control over what topics appear in their feed, which means content must be clearly categorizable by topic.

• Verify every Discover-targeting page has a properly sized og:image (1200x630)
• Test mobile-friendliness and Core Web Vitals on key landing pages
• Review Search Console Discover reports for impression and CTR trends
• Check that no page targeting Discover is blocked by robots.txt or noindex
• Audit headline quality: remove clickbait and ensure headlines accurately reflect content
• Confirm dwell time above 15 seconds in analytics for current Discover traffic