A tutorial can have a useful illustration while its page settings still limit the size of image previews Google may show. Before replacing the image, check the instructions delivered with the article. The setting max-image-preview:large allows a larger preview; it does not create an image or guarantee a particular search appearance.
Use the fictional Willow Sketchbook Tutorial below as a small editing exercise. The goal is to add a deliberate preview permission to one public article, then check the saved result without changing unrelated indexing decisions.
1. Find the current preview instruction
Open the published article and inspect its page source. Search for robots, googlebot and max-image-preview. Also examine the document response headers for X-Robots-Tag. Write down each relevant value before editing anything.
Google supports three image-preview limits: none, standard and large. Its robots directive documentation explains their scope and how conflicting rules are handled. A restrictive applicable rule can still limit the result even when another tag allows larger previews.
For this exercise, assume the tutorial is intentionally public and indexable. Keep any intentional noindex decision on other pages. This task is permission for image previews, not a reason to make private or excluded content searchable.
2. Generate a baseline tag for the example
Open the Meta Tag Generator and enter these example values:
- Page title:
Willow Sketchbook Tutorial - Meta description:
Compare paper surfaces and follow a simple pencil exercise in this sketchbook tutorial. - Robots:
index, follow
Leave the social-tag option off for this exercise and generate the tags. Locate this line in the output:
<meta name="robots" content="index, follow">The current tool offers preset robots choices. It has no custom field for max-image-preview, so it does not add that permission for you. Use the generated line as a baseline to compare with the manual edit in the next step.
3. Extend the existing robots value
For the fictional tutorial, edit the line in a text editor to read:
<meta name="robots" content="index, follow, max-image-preview:large">The comma keeps the additional instruction in the same content value. As MDN explains for HTML metadata, name identifies the metadata and content supplies its value.
On a real WordPress site, first find which theme or SEO plugin already supplies the robots tag. Update that provider’s supported setting rather than pasting a second complete generated tag block into the page. Save a copy of the original value so the edit is reversible.
For example, an existing googlebot rule with max-image-preview:standard needs attention too. Simply appending a more permissive tag elsewhere does not resolve that conflict.
4. Verify the published response
Check the public URL after saving, using a fresh request rather than relying on the editor field. If the site serves a cached copy, refresh that copy through its normal cache controls and inspect the response again.
- Find the intended robots line in the published HTML head.
- Check all other applicable robots tags and response headers for a conflicting preview limit.
- Confirm the edit did not accidentally introduce
noindexor remove another deliberate rule. - Open another article using the same template to learn whether the setting changed one page or the whole article template.
Crawlers must be able to access the page to read these instructions. Keep a dated record of the URL, previous value and verified new value; a saved setting alone is not evidence that the live response changed.
5. Review the image separately
A larger preview permission cannot improve a blurry source file. Check that the tutorial actually includes a relevant, clear illustration. If Discover is also a goal, review Google’s current Discover image guidance, including its size, shape and cropping recommendations. Preview permission is only one part of that review, and Discover eligibility does not promise placement.
Keep the illustration’s description useful for readers too; the website image alt-text guide explains that separate writing task. After this edit, the concrete success check is the correct live instruction. Record later search appearances as observations without treating a missing large thumbnail as proof that the tag failed.