What is schema markup, and do you need it?

Schema markup is the thing most SEO audits flag and almost nobody explains. It is simpler than it sounds, and it has become more useful in the last two years than it was in the ten before them.

This site runs it on every page, so the examples here are ones I can point at.

What is schema markup?

A block of data on a page that tells a machine what the page is, in words a machine does not have to guess at.

A person reading your page can tell that "Deji" is the author, that the number near the top is a price, and that the thing in bold is a question. A crawler is pattern matching. Schema removes the guessing by stating it outright, usually as a block of JSON in the page source called JSON-LD.

So a page about an article carries a block saying: this is an Article, the headline is this, it was published on this date, the author is this person, and here is a link proving who they are.

It changes nothing a visitor sees. It changes what a machine can say about you with confidence.

Does schema markup help SEO?

Not directly, and this is where most explanations mislead.

Schema is not a ranking factor in the way a link or a page title is. Adding it does not push you up the results on its own, and anyone selling it that way is overselling.

What it does is make you eligible for things you otherwise cannot have. Rich results in Google: the review stars, the FAQ dropdowns, the event dates, the price and availability under a product. Those are not rankings, they are a bigger, more useful listing in the same position, and they take more clicks than the plain blue link above them.

The second effect is the one that has grown. An assistant answering a question has to decide which sources to stand behind, and the easiest sources to stand behind are the ones that state plainly what they are and who wrote them.

Which schema types does a small business actually need?

Four, for most businesses, and the rest is noise.

LocalBusiness or Organization. Who you are, where you are, how to reach you. This should agree exactly with your Google Business Profile, because disagreement between the two is a signal in the wrong direction.

Person. For a business that is a person, which most freelancers and consultants are. Name, role, and sameAs links to profiles that corroborate it. This is how a search engine connects a domain to a human rather than treating them as two unrelated things.

FAQPage. For any page that answers questions. This site generates it from the headings: a heading shaped like a question, answered directly underneath, becomes a marked up question and answer pair. Which is also why the headings here are questions.

Product, if you sell things, and Article or BlogPosting if you publish. Both are mostly automatic on Shopify and WordPress.

Everything else exists for a reason, and that reason is probably not you.

Why does it matter more now?

Because the thing reading your page has changed.

Ten years ago the audience for structured data was a search engine building a list of links. Now a growing share of your potential customers never see that list. They ask an assistant and get an answer, and the assistant chose a few sources to build it from.

What makes a source easy to choose is attribution. A named author who exists somewhere other than your own website. An organisation that can be identified. Claims that can be checked. Structured data is how you say all of that in a form that does not require interpretation.

None of it helps if the page cannot be read in the first place, which is a separate and more common problem, covered in is your website invisible to AI search.

How do I add it without a developer?

On most platforms you already have some, and the gap is smaller than you think.

Shopify themes output Product and Organization markup by default. WordPress with Yoast or RankMath outputs Article and Organization. Wix and Squarespace both do a reasonable amount automatically.

What is almost always missing is the specific stuff: FAQ markup on pages that answer questions, Person markup with real sameAs links, and LocalBusiness details that match your Google profile exactly.

Two things to do rather than read about:

Check what you already have. Paste a page into Google's Rich Results Test. It will list what it found and what is broken. Most sites are surprised in both directions.

Fix the disagreements first. Markup that contradicts the visible page, or contradicts your Google Business Profile, is worse than none. A phone number in your schema that is not your phone number is a problem you cannot see.

Is it worth doing?

Yes, and it is a one afternoon job rather than an ongoing cost.

Schema is unusual in that it is mostly set and forget. Add the four types above, make sure they agree with reality and with each other, and it keeps working without maintenance. There are not many things in search you can say that about.

If you want to know what your site currently emits, the free audit on this site checks for structured data among its 25 checks, along with whether your content survives without JavaScript and whether you are blocking any AI crawlers. About twenty seconds, and it needs nothing but your web address.