8 Technical SEO Checks to Run Before Publishing a Website Update
Website updates can improve design, functionality and user experience, but even a small change can affect search performance if technical SEO is overlooked. Changes to URLs, page content, navigation or indexing settings may prevent search engines from accessing important pages correctly. Tools such as Google Search Console and Screaming Frog SEO Spider help website teams identify potential problems before and after publishing updates. At Mercadeo, technical SEO checks can support a more organised website optimisation process and help businesses protect their organic visibility.
1. Check URL changes and redirects
Website redesigns and content updates sometimes involve changing page URLs. If an existing URL changes without an appropriate redirect, visitors and search engines may encounter a broken page.
Before publishing, review all URLs that have been added, removed or modified. When a page has moved permanently, use a relevant 301 redirect from the old URL to the correct new destination.
Avoid redirecting every removed page to the homepage. Redirect users to the closest relevant replacement where one exists. Also check for redirect chains, loops and links that still point to outdated URLs.
2. Review robots.txt and indexing settings
A page may be technically accessible but still excluded from search results because of an incorrect indexing directive.
Check the website’s robots.txt file and review the robots meta tags on important pages. Make sure the intended public pages are not accidentally blocked from crawling or marked with a noindex directive.
Staging websites often use restrictions to prevent unfinished content from appearing in search results. These restrictions should be reviewed carefully before the production website goes live. Do not remove legitimate restrictions from private or duplicate pages without assessing their purpose.
3. Verify XML sitemap accuracy
An XML sitemap helps search engines discover URLs that a website considers important. However, a sitemap containing redirects, broken pages or URLs blocked from indexing can create unnecessary confusion.
Before publishing, confirm that the sitemap includes the correct canonical URLs for important, indexable pages. Remove outdated URLs and check that the sitemap updates as expected when content changes.
Submit or resubmit the sitemap through Google Search Console when appropriate. Remember that inclusion in a sitemap does not guarantee indexing; search engines make their own crawling and indexing decisions.
4. Test internal links and navigation
Internal links help search engines discover pages and understand how content is connected. They also help visitors move between related sections of a website.
After updating a page or navigation menu, check for broken internal links, incorrect destinations and links to redirected URLs. Confirm that important pages remain accessible through relevant navigation or contextual links.
Review orphan pages as well—pages that have no internal links pointing to them. If a page is valuable to users and search visibility, add suitable internal links from relevant existing content.
5. Review canonical tags
Canonical tags indicate which URL should be treated as the preferred version when similar or duplicate pages exist. Incorrect canonical settings can lead search engines to select an unintended URL for indexing.
Check that important pages have appropriate canonical tags and that those tags point to the intended preferred URLs. Pay particular attention to changes involving URL parameters, trailing slashes, HTTP versus HTTPS and duplicate content.
Do not automatically set every canonical tag to the homepage. Each page should point to the correct preferred version based on the website’s content and URL structure.
6. Check mobile usability and core web vitals
A website update may affect page layout, navigation, loading speed or interactive elements on mobile devices. Test key templates and landing pages on different screen sizes before publishing.
Review image sizes, unnecessary scripts, layout shifts and slow-loading resources. Google’s Core Web Vitals—Largest Contentful Paint (LCP), Interaction to Next Paint (INP) and Cumulative Layout Shift (CLS)—provide useful indicators of loading performance, responsiveness and visual stability.
Use tools such as PageSpeed Insights to identify performance opportunities. A good score is helpful, but testing real user experience and ensuring that essential content works correctly are equally important.
7. Validate structured data
Structured data helps search engines interpret specific information on a webpage. Depending on the content and eligibility requirements, valid structured data may make a page eligible for certain enhanced search appearances.
If an update changes product details, article information, breadcrumbs or other marked-up content, verify that the structured data remains accurate. Check for missing required properties, invalid values and differences between the markup and visible page content.
Use Google’s Rich Results Test where applicable and review relevant reports in Search Console. Valid structured data does not guarantee that a rich result will appear.
8. Test important pages before and after publishing
A final quality check can help identify issues that automated tools may not fully explain. Test key pages, forms, navigation elements, images and calls to action before releasing the update.
After publishing, verify that the live pages return the expected HTTP status codes, load correctly and contain the intended content. Crawl the updated website with a tool such as Screaming Frog SEO Spider to identify broken links, missing metadata, redirect issues and other technical problems.
Use Google Search Console to monitor indexing, page experience and search performance over time. Not every change appears immediately in search results, so compare performance with an appropriate baseline rather than drawing conclusions from a short period alone.
Technical SEO checklist before publishing
Use this quick checklist before approving a website update:
- Confirm that changed URLs have appropriate redirects.
- Check robots.txt and indexing directives.
- Validate XML sitemap URLs.
- Test internal links and navigation.
- Review canonical tags.
- Test mobile layouts and page performance.
- Validate relevant structured data.
- Crawl the live website and monitor Search Console.
Final Thought
Technical SEO should be part of the website publishing process, not a task left until search performance declines. Reviewing redirects, indexing settings, internal links, canonical tags, mobile performance and structured data can help teams identify preventable issues before they affect important pages.
A repeatable technical SEO checklist also makes website updates easier to manage across content, development and marketing teams. At Mercadeo, combining technical reviews with ongoing performance monitoring can help businesses maintain a healthier website and make more informed SEO decisions.
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