Technical SEO Checklist for New Websites

Technical SEO is the foundation that lets search engines find, understand and show your pages. It is much easier to set up correctly at launch than to repair later. Work through this checklist before and just after you publish a new website.

1. Make the site crawlable

• Use clean, readable URLs that describe the page.
• Submit an XML sitemap in Google Search Console and Bing Webmaster Tools.
• Check that robots.txt does not block pages you want indexed.
• Fix broken links and make sure your 404 page helps visitors find their way.

2. Give every page a clear purpose

• One H1 per page that states the topic.
• A unique title tag and meta description for each page.
• Logical headings (H2, H3) that outline the content.
• Internal links between related pages using descriptive anchor text.

3. Be fast and mobile friendly

Most visitors arrive on a phone. Use a responsive design, compress images, serve modern image formats and avoid heavy scripts you do not need.

Test with a page speed tool and aim for fast loading of the main content, stable layout and quick response to taps.

4. Add structured data

Structured data (schema markup) helps search engines understand your business, articles, products and FAQs, and can make results richer. Add Organization and WebSite markup sitewide, then Article, Product, FAQ and Breadcrumb markup where they apply.

Validate it with Google's Rich Results Test and fix any errors.

5. Secure and index the right version

• Use HTTPS everywhere and redirect HTTP to HTTPS.
• Pick one preferred domain version and add canonical tags.
• Avoid duplicate pages, or point duplicates to the main page with a canonical tag.
• Use noindex only on pages that should stay out of search, such as cart or thank-you pages.

6. Publish helpful content

Technical SEO opens the door, but content earns the ranking. Write for a real question, answer it clearly, and keep pages updated.

Add images with descriptive alt text and make sure each page offers something a competitor's page does not.

After launch

Watch Search Console for indexing and coverage messages, review your top pages monthly and improve pages that get impressions but few clicks. SEO is a steady process, not a one-time task.

Worked example: a first technical SEO pass

Take a small new site with a home page, three service pages and a contact page. Run the checklist above on each page in turn. On the home page, check that the title names the business and what it does, that there is one H1, and that the page links to the three service pages. On each service page, check that the title and description describe that service only, and that the page links back to the home page and to the contact page.

Then check the technical basics for the whole site: HTTPS is on, the sitemap lists the five pages, the robots file does not block them, and the preferred domain version is consistent. Finally, open each page on a phone and check that text is readable without zooming and that buttons are easy to tap. Fix what you find, then move on. One careful pass like this catches most of the problems that hold new sites back.

How to check crawlability yourself

You do not need paid tools to check the basics. Open your robots file by adding /robots.txt to your domain name and confirm it does not block the pages you want found. Open your sitemap the same way, by adding /sitemap.xml, and confirm it lists your main pages. Then open your site search console account and check that the sitemap has been submitted and that the main pages are indexed.

If a page is missing, check the common causes first: the page may be set to noindex, it may be blocked by the robots file, or it may have no internal links pointing to it. Fix the cause, then ask the search console to check the page again. Add an internal link to any page that has none, because pages with no links are easy for crawlers to miss.

Keep the structure simple. Every important page should be reachable from the home page in a small number of clicks, and every page should link to at least one related page. A clear structure helps visitors and search engines alike, and it makes the site easier to maintain as it grows.

Titles, descriptions and headings that help

Give every page a title that names its topic in plain words, and a description that summarises the page in one or two sentences. Keep the title short enough to read at a glance, put the most important words near the start, and do not repeat the same title on two pages. A weak title says Home or Services. A stronger title says what the page is about and who it is for, for example Web Design for Small Businesses.

Use one H1 per page for the main heading, then H2 headings for the sections in order. Do not skip from H1 to H3, and do not use headings only to make text look bigger. If you struggle to write titles and descriptions, the prompts guide How to Write Better AI Prompts: A Practical 5-Part Framework shows how to brief an AI tool to draft them, and the niche guide How to Choose a Profitable Niche for Your Website or Digital Business helps you decide what each page should be about.

Common technical SEO mistakes

Most new sites lose search visibility through small, fixable mistakes. Check for these before you look for more complicated causes.

• Missing sitemap: search engines find new sites faster when a sitemap lists the pages.
• Duplicate titles: every page needs its own title, or search engines cannot tell them apart.
• Images without alt text: describe each image briefly so it can be understood without seeing it.
• Slow pages: large images and extra scripts are the usual cause on new sites.
• Mixed HTTP and HTTPS: keep everything on HTTPS so visitors and search engines see one version.
• Noindex left on by mistake: check that live pages are not set to stay out of search.

Speed and mobile: a practical routine

Speed work starts with images. Resize each image to the size it is shown at, compress it, and use a modern format where you can. Remove scripts and plugins the site does not need, and turn on caching so repeat visits load faster. Then test the home page and one inner page on a phone and on a computer, and note anything that feels slow.

For mobile, check that text can be read without zooming, that buttons and links are large enough to tap, and that nothing runs off the edge of the screen. Fix the worst problem first, then the next. A small site that loads quickly and reads well on a phone is already ahead of many new sites. If you would like help with this, Xentello AI offers website development and SEO services, including technical checks for new websites.

Frequently asked questions

How long does it take for SEO changes to show results? It varies. Some fixes, such as a corrected sitemap or a removed noindex tag, can show effect quickly, while new pages can take weeks to appear and settle in search results. Treat SEO as a steady process: fix the basics, publish helpful content, then review and improve each month.

Do I need an SEO plugin? A plugin can help with titles, sitemaps and structured data, but it does not replace the checklist. The basics in this guide matter more than any single tool. Choose one well-kept plugin, set it up carefully, and do not install several that do the same job.

What is structured data in simple terms? It is extra information added to a page that helps search engines understand what the page is about, such as an article, a product or a set of questions and answers. Add it where it fits, then use a free validation tool to check that it is correct.

Should I pay for an SEO audit? Start with this checklist first. It covers the problems that affect most new sites. If the basics are in place and you still have questions, an audit can help, and Xentello AI offers SEO services for site owners who would like an expert to check their site.

Written by the Xentello AI team.