Guides: fix the problems a pre-publish check finds
Each guide starts from a real problem, like a Search Console status you don't recognise or a link preview with no picture, and walks through what is happening, why, how to check it, how to fix it and how to confirm the fix worked.
Every guide says plainly which parts a free checker on this site can confirm for you and which parts you have to check yourself. Nothing here promises how Google, Facebook or any other service will treat your page: they make their own decisions, and no outside tool can see inside them.
A page is missing from Google
- Why isn't my page showing up on Google? Rule out the blockers you can check on the page itself, and know which causes no tool can see.
- Excluded by ‘noindex’ tag Find where the noindex comes from (tag, HTTP header, CMS setting), remove it and confirm it's gone.
- Blocked by robots.txt Find the exact rule that blocks a URL, change it safely, and avoid mixing robots.txt with noindex.
- Alternate page with proper canonical tag Usually correct. How to spot the cases that aren't: a canonical to staging, a 404 or a redirect.
- Sitemap could not be read / Couldn't fetch Check what the sitemap URL actually returns before you resubmit it.
A shared link looks wrong
- Open Graph image not showing Work through tags, image URL, response, size, crawler access and cache to find which one fails.
Something on the page is broken
- Mixed content warnings Find every http:// file on an https page, and why browsers block some and only warn about others.
- Unparsable structured data Find the JSON-LD block Google can't read (a trailing comma, a stray quote, an empty value) and fix it at its source.
Before you launch
- Website launch checklist What to verify on each page before launch, how to verify it, and what only you can check.
Prefer to check straight away?
The Website Pre-Publish Checker runs every page-level check in one pass: indexing signals, title and description, link preview tags and image, broken links and files, image alt text, structured data and HTTPS. The robots.txt and sitemap checks are separate because they look at the whole site rather than one page.