Most SEO guides talk about keywords and content. But if your site has technical problems, no amount of content will help you rank. Google cannot rank what it cannot crawl, render, or understand.
This checklist covers the 20 technical SEO fixes that consistently deliver the biggest ranking gains, based on our experience auditing 200+ Indian and global websites.
1. Fix Crawl Errors First
Open Google Search Console and go to the Coverage report. Any URLs marked Excluded or Error are pages Google tried to index and failed. Fix 404s with proper 301 redirects, and remove pages you do not want indexed using noindex tags or robots.txt.
2. Audit Your Core Web Vitals
LCP, INP, and CLS are ranking signals. Use PageSpeed Insights to check your scores. A score below 50 on mobile is actively hurting your rankings. Common culprits: unoptimised images, render-blocking JavaScript, and poorly chosen web fonts.
3. Implement HTTPS Sitewide
Every page, including internal redirects, must load over HTTPS. Mixed content warnings erode trust scores. Run your site through Why No Padlock to catch these before Google does.
4. Fix Duplicate Content With Canonical Tags
If Google sees your content at multiple URLs (www vs non-www, trailing slash vs no slash, UTM-tagged pages), it dilutes your ranking signal. Add a canonical tag to every page pointing to the preferred URL.
5. Optimise Your XML Sitemap
Your sitemap should include only indexable, canonical URLs. Remove 301-redirected pages, noindex pages, and error URLs. Submit it in Google Search Console every time you publish a major batch of content.
6. Structure Your Internal Links Like a Silo
Every important page should be reachable within 3 clicks from the homepage. Orphan pages get crawled infrequently and rank poorly. Run a crawl with Screaming Frog to find them.
7. Add Schema Markup to Every Key Page
Structured data helps Google understand your content and enables rich results (star ratings, FAQs, breadcrumbs). At minimum, add Organisation, WebPage, and BreadcrumbList schema. Service pages should have Service schema.
8. Fix Redirect Chains
A to B to C redirect chains waste crawl budget and dilute link equity. Every redirect should be a single hop. Run a crawl to find chains longer than one step and collapse them directly.
9. Optimise Robots.txt
Block admin directories, staging environments, and duplicate parameter URLs, but never block CSS, JavaScript, or pages you want indexed. A misconfigured robots.txt can accidentally deindex your entire site overnight.
10. Mobile-First Is Not Optional
Google indexes the mobile version of your site first. Test every page with the Mobile-Friendly Test. Pay particular attention to font sizes, tap target sizes, and viewport configuration.
What to Do Next
A full technical SEO audit surfaces issues specific to your site that no generic checklist can predict. At SEOvengers, we run a 200-point technical audit as the foundation of every engagement.