Why does canonical in Next.js point to another domain?
Find the source of an incorrect canonical in Next.js 15: metadataBase, absolute URLs, environment settings, and how to check the final HTML after a fix.
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How to check a website, investigate errors and track changes.
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Find the source of an incorrect canonical in Next.js 15: metadataBase, absolute URLs, environment settings, and how to check the final HTML after a fix.
Investigate a 200 response from a “Not found” page in Next.js 15: streaming, notFound, noindex, checking the main document and a clear task for the developer.
Set up redirects for old product pages in Next.js 15: a mapping table, 308 rules, query parameters, chain checks, and catalog migration acceptance.
Find the source of noindex in Next.js 15: inherited metadata, layout and page settings, HTTP headers, and safe checks for public and private pages.
Render products and links in a Next.js server page 15. An example catalog, checking HTML without JavaScript, pagination, and acceptance testing after changing how the page loads.
An audit of a catalog with pagination and lazy loading: accessible URLs, links between pages, product listings, canonical URLs, and an acceptance test after a template change.
How to compare meta tags in the CMS, server HTML, CDN, and browser; find an old page copy; and check the regular guest URL after clearing the relevant cache.
How to check Accept-Encoding and Content-Encoding for HTML and JavaScript, compare with an uncompressed response, find an incorrect MIME type or threshold, and verify decompression.
How to record a form freeze in Performance, distinguish a busy main thread from waiting for an API, find a function in the stack, and check errors and repeat clicks.
How to repeat speed measurements with the same network, CPU, screen, and cache settings, compare a series of results, and distinguish lab tests from visitor data.
Open a tool for the task described in the article.