Schema markup does not cause a model to cite you, and no one should claim it does. What it does is remove ambiguity about what a page contains: who wrote it, what it is about, what is being claimed, and how the entities on it relate. A system deciding whether to repeat your claim has less to infer, which makes you a lower-risk source. That is a real benefit and a modest one.
What structured data actually does
Schema is a vocabulary for stating, in machine-readable form, what a page would otherwise require a system to work out. That this block of text is a recipe. That this name is the author and this is their credential. That this business is located here and offers these services.
Without it, every one of those has to be inferred from the prose. Inference is usually right and occasionally wrong, and the wrong cases are the expensive ones.
The types worth implementing
| Type | What it establishes | Worth it for |
|---|---|---|
| Organization | Who you are, where, and how you connect to your other profiles | Every site, without exception |
| Person | Authors as real people with credentials | Anywhere you publish under a byline |
| Article | Headline, author, published and modified dates | Blogs and any editorial content |
| LocalBusiness | Location, hours, service area | Any business with premises or a service area |
| FAQPage | Question and answer pairs, explicitly paired | Pages genuinely structured as questions |
| Product and Offer | What is sold, at what price, in what condition | Anything transactional |
| BreadcrumbList | Where the page sits in the site | Any site with real hierarchy |
The first two are the ones most relevant to being trusted as a source, and they are the two most commonly missing.
What schema will not do
- Make a page rank that would not otherwise rank
- Make a model cite a claim it has no other reason to trust
- Compensate for a page that is thin or wrong
- Guarantee a rich result, which Google awards at its own discretion
Schema describes. It does not persuade. A well-marked-up page with nothing to say is still a page with nothing to say.
Where it goes wrong
- Markup that does not match the page. Claiming an author who is not named on the page, or a rating nobody left. This is a policy violation, not a clever shortcut.
- Half-completed types, where the required properties are missing and the block does nothing.
- Several conflicting blocks on one page, saying different things.
- Copied templates left with the example organization's details still in them, which happens more than you would think.
- Markup added and never checked again after a CMS change silently broke it.
How to check yours
- Run your key templates through a validator. One page per template, not one page per site.
- Check the enhancement reports in Search Console for errors at scale.
- Read what your markup says and compare it with the page. Validators check syntax, not honesty.
- Re-check after any CMS or theme update. This is where working markup quietly stops working.
Schema is cheap, durable and low-risk. It is not a lever that moves anything on its own. Implement the basics properly, keep them accurate, and spend the rest of your attention on having something worth citing.