Optimising for Google Discover Images Topics and Freshness

Image and markup requirements specific to Discover

Discover strongly favours large, high-quality images — Google recommends images at least 1200 pixels wide with the max-image-preview:large robots meta tag set, since without that tag Google may only be permitted to show a small thumbnail or no image at all, which measurably suppresses Discover click-through. Every article should carry a genuinely relevant, well-composed lead image rather than a generic stock photo, since image relevance and quality are directly evaluated as part of Discover eligibility.

Confirm the max-image-preview:large directive is present sitewide, not just on a handful of templates — this is frequently missed on older article templates or sections that predate a broader technical SEO overhaul, and it's an easy, high-leverage fix once found.

• Lead images at least 1200px wide, genuinely relevant to the story
• meta name="robots" content="max-image-preview:large" sitewide
• Avoid generic stock photography where possible
• Audit older templates specifically for missing preview directives

Topical consistency and freshness signals

Publishing consistently within a recognisable set of topics helps Google build confidence about what your site is a reliable source for, which feeds directly into Discover's interest-matching model — a site that jumps between unrelated topics without a clear identity is harder for Discover to match confidently to any specific reader interest cluster. Freshness matters, but not in the same narrow sense as breaking news speed; Discover rewards content that feels current and relevant to what's happening now, which can include timely angles on evergreen topics as well as pure breaking news.

Track Discover performance in Search Console's dedicated Discover report (available once a site has enough Discover traffic to qualify for reporting), watching impressions and click-through rate by article to identify which topics and image styles are actually resonating, then feed that back into editorial planning rather than guessing.

Key takeaways

• ✓Use large, genuinely relevant lead images with max-image-preview:large set
• ✓Audit older templates specifically for missing preview directives
• ✓Build topical consistency so Discover can confidently match your content
• ✓Use the Search Console Discover report to guide editorial decisions

Why this lesson matters

This lesson belongs to Discover, strategy and measurement, the part of News & Publisher SEO where the goal is: optimise for google discover specifically, plan a sustainable content mix, and monitor performance across news surfaces.

Read it once, then do it straight away on a real site inside RankAudit. Nothing here is theory for its own sake — every step produces something you can show a client.

Do it now

1. 1Open RankAudit with sample data already loaded, so you are not stuck on setup.
2. 2Crawl a site and triage the issue list.
3. 3Build a RankAudit monitoring view that tracks Discover and Top Stories impressions alongside your Core Web Vitals scores by section.