max-image-preview:large matters mainly in Discover, where it allows a large image that draws people's attention, so the rule can make a page more visible than leaving it out, John Mueller said.
John Mueller · Day 2 · Controlling indexing
Thing · Directive
max-image-preview
A robots rule that sets the largest image preview Google may show for a page: none, standard or large.
- Claims
- 7
- In Google’s docs
- 0
- Said at the event
- 5
- Not in docs
- 0
- Kit items
- 3
Glossary · max-image-preview
A robots rule for the largest image preview Google may show: none, standard or large, for example in Discover.
Google’s documentation 0
Documented in
Said at the event 5
Slide and stage claims that name it, the ones Google’s documentation does not cover first.
Consistent with docs 3
Consistent with docsD2-C104
To be as visible as possible in Google, John Mueller's closing slide recommended the robots rules max-image-preview:large and max-snippet:-1.
John Mueller · Day 2 · Controlling indexing
Setting the max-image-preview robots meta tag to large can make content perform surprisingly well in Discover, Gary Illyes said.
Gary Illyes · Day 2 · Using images to your advantage and Engaging Search users with videos
Confirmed by docs 2
Confirmed by docsD2-C087
The max-image-preview rule sets the maximum size of a page's image previews: none shows no preview, standard a default-sized one and large the largest possible, for example in Discover.
John Mueller · Day 2 · Controlling indexing
Confirmed by docsD3-C224
Google's Discover slide recommended large images at least 1,200 px wide, with more than 300,000 total pixels and a 16x9 aspect ratio, enabled by the max-image-preview:large setting.
Press and analysis 2
AnalysisD2-C105
Set max-snippet:-1 and max-image-preview:large on every indexable template unless licensing requires otherwise, and check that no CMS, plug-in or CDN setting adds lower snippet or image preview limits by default.
Ibrahim Anjro · Day 2 · Controlling indexing
AnalysisD3-C230
For Discover, set max-image-preview:large on article templates, give every article a relevant image at least 1,200 px wide in og:image or schema.org markup that is neither the site logo nor text-heavy, and show clear bylines and dates.
Ibrahim Anjro · Day 3 · Uncovering Trustworthy Experiences on Discover
Built on these claims 3
Kit items about max-image-preview: their own words name it, or several of the claims they rest on do.
Developer requirements 2
Allow full snippets and large previews with max-snippet:-1 and max-image-preview:large
Rests on 8 claims, 5 of them naming max-image-preview; its own words name max-image-preview
Give every article a large, relevant lead image and declare it in og:image or markup
Rests on 6 claims, 2 of them naming max-image-preview; its own words name max-image-preview
Also inglossary term max-image-preview
Connected things 7
Relations
- Part of Robots meta tag structure, no claim needed
Most often named with it
Things named in the same claim, with the number of claims they share.