SEO Technical Checklist

Key takeaways

A technical SEO checklist ensures search engines can crawl, render, and index your site correctly.
Core areas include crawlability, indexation, Core Web Vitals, mobile usability, site architecture, and structured data.
Use Google Search Console as your primary diagnostic tool for indexing and performance issues.
Common mistakes include blocking pages in robots.txt, relying only on sitemaps, and ignoring JavaScript rendering.

Use this checklist before and after publishing to catch common technical issues that can block search engines from finding and ranking your content.

Before you start

Do you have access to Google Search Console for your domain?
Have you identified your site’s important templates and top pages?
Do you know your site’s platform (CMS, custom build, etc.) and how it handles JavaScript rendering?
Have you set up a crawl tool (e.g., Screaming Frog, Sitebulb) to simulate Googlebot?

Before publishing

Is the page crawlable? Check that it is not blocked by robots.txt or a noindex meta tag.
Does the page have a self-referencing canonical tag (or a correct canonical pointing to the preferred URL)?
Is the XML sitemap updated to include this page? Submit it via Google Search Console.
Are internal links pointing to this page from at least one other relevant page on your site?
Does the page load quickly? Check Core Web Vitals (LCP < 2.5s, FID < 100ms, CLS < 0.1) using PageSpeed Insights or Lighthouse.
Is the page mobile-friendly? Test with Google’s Mobile-Friendly Test.
Does the page have structured data (schema markup) appropriate for its content type (e.g., Article, Product, FAQ)?
Are all images using descriptive alt text and properly compressed?
Is the URL structure clean, readable, and using hyphens to separate words?

After publishing

Has Google indexed the page? Check the URL in Google Search Console’s URL inspection tool.
Are there any index coverage errors (e.g., soft 404, redirect errors, or blocked by noindex)?
Is the page appearing in search results for its target query? Use Google Search Console’s Performance report.
Are there any broken links on the page? Use a crawl tool or Google Search Console’s Links report.
Has the sitemap been re-submitted or automatically picked up by Google?
Monitor Core Web Vitals over time using Google Search Console’s Core Web Vitals report.

Common mistakes

Blocking important pages in robots.txt or accidentally applying noindex to pages that should rank.
Relying on XML sitemaps instead of fixing poor internal linking or site architecture.
Ignoring JavaScript rendering differences, which can cause content to be visible to users but not fully understood by search engines.
Auditing only sample URLs instead of template-level and log-file behavior on large sites.

Next step

SEO AuditRun a full technical audit to identify and fix issues systematically.

FAQ

What is a technical SEO checklist?

A technical SEO checklist is a structured list of site-level tasks that ensure search engines can crawl, render, understand, and index your website correctly.

Why is a technical SEO checklist important?

It helps prioritize fixes that improve crawlability, indexation, performance, and site quality signals, preventing technical issues from blocking visibility.

How often should I run a technical SEO checklist?

At least quarterly for established sites, or after major site changes like redesigns, migrations, or platform updates.

Sources

Google Search Central — Primary source for crawling, indexing, sitemaps, robots.txt, structured data, and technical search guidelines.
Google Search Central — SEO Starter Guide — Best high-level reference for technical and on-page SEO basics.
Google Search Console Help — Official guidance for diagnosing index coverage, sitemaps, Core Web Vitals, and crawl issues.
Google Search Central — Page experience / Core Web Vitals — Authoritative reference for performance metrics that affect technical SEO priorities.

Reviewed by Lucía Marín, Founding editor.