Landing page checker: the faults it cannot see

A landing page checker reads the page the way a search engine or a code scanner does. It looks at the title, the description, the headings, the alt text on images, the links it can find, and how long the page takes to load. Those are real things, and a page can fail them while visitors still get through. It never types, clicks or waits for the next screen, so it cannot find the form that rejects a valid address, the button a banner covers, or the thank-you page that never loads. Those faults live in a sequence, and a document check never runs the sequence.

• Every field accepts the formats a visitor types, not only the one the owner tested.
• No cookie notice, sticky bar or chat widget covers the main button on a phone.
• A click on the main button reaches the screen it names, and that screen finishes loading.
• Errors appear beside the field that caused them, after submit, not only at the top.
• The thank-you page shows after submit, and the confirmation email arrives.

Start with what the checker does well. It reads the title and the description, and it can tell you whether the description is missing, too long or repeats the title. It checks the heading order, the alt text on images, and whether links point to pages that exist. It can measure load time from its own connection. Those checks matter for search and for visitors who use assistive tools, and a failing one is worth fixing. What they do not show is what happens after the first click, because the checker never clicks anything.

If the checker scores the page well and a visitor still cannot finish, the fault is in a step. Look for three tells. The visitor stops on a field, and the error appears only after a tap. The visitor stops on a button that is visible but sits under another layer, such as a cookie notice or a sticky bar, so the click lands on the layer. Or the visitor reaches a thank-you page that never draws. Each tell appears in a screenshot of the step where the visitor stopped. A document check can pass all three while the visitor is stuck on the same page.

Each method answers a different question. A document checker answers whether the page is built well. Analytics shows where traffic drops, but not why. Session replay shows what a real visitor did, but only once real visitors arrive. A scripted end-to-end test checks the steps someone wrote down, so it catches a regression in a flow you already know. A simulated visitor arrives with no history and moves through the path looking for the next step. Use the table to choose, and use more than one.

When the checker's list is long and the visitor's list is short, fix the visitor's list first. A missing meta description costs little, because visitors never see it on the page. A field that rejects a valid postal code stops every buyer who types one. Start at the step where the visitor stopped, in the report, and fix the blocking thing there. Then run the checker again, because a fix to a link or a redirect can change what it reports, and run the visitor again to see whether they get further.

Test website before launch

A checker score describes the document, so it can stay the same while a form field, a redirect or a booking widget changes underneath it. Run the same first-time visitors through the path after each change, and read the step where each one stopped.