Quality Assurance

Review your Code online

The "hello3 site" is about 12MB including all assets. This site is not meant to be a production site but rather a demonstration of how to build a simple multi-page application (MPA) using Go. So the tests below will not show good scores for social media presence. The over all goal is to make a simple, fast and secure site. Though only 2 pages and no optimized images (still jpg - not webp).

1. Add Sitemap + robots.txt

Create a sitemap.xml file and place it within the seo folder together with the robots.txt file. The Go init.go is already prepared to serve these file to the root. Then add this sitemap to Google Search Console to help Google find and index your pages. A benefit for some test tools. Note that robots.txt refers to the sitemap.

<?xml version="1.0" encoding="UTF-8"?>
<urlset
      xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9
            http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">
<!-- created with Free Online Sitemap Generator www.xml-sitemaps.com -->


<url>
  <loc>https://hello3.go4webdev.org/</loc>
  <lastmod>2026-01-20T18:15:57+00:00</lastmod>
  <priority>1.00</priority>
</url>
<url>
  <loc>https://hello3.go4webdev.org/gvp</loc>
  <lastmod>2026-01-20T18:15:57+00:00</lastmod>
  <priority>0.80</priority>
</url>
<url>
  <loc>https://hello3.go4webdev.org/home</loc>
  <lastmod>2026-01-20T18:15:57+00:00</lastmod>
  <priority>0.64</priority>
</url>


</urlset>

Sitemap: https://hello3.go4webdev.org/seo/sitemap.xml
User-agent: *
Allow: /

Create Sitemap Submit to Google Search Console

2. Check using pagespeed.web.dev

Use Google's PageSpeed Insights to analyze the performance of your web pages. It provides suggestions to make your pages both faster and better. Test both mobile and desktop versions.

Test with PageSpeed

3. Check Security Headers

CSP and other security headers are important for protecting your site from various attacks. Use a tool like securityheaders.com to check your headers.

Check Security Headers

4. Check using GTmetrix

GTmetrix is a tool that combines PageSpeed Insights and GTmetrix to provide comprehensive performance analysis. It offers some extra insights into how to optimize your site for better speed and user experience.

Check with GTmetrix

5. Check HTML

W3C HTML Validator is a tool for checking the HTML Code.

Check HTML

6. Check CSS

W3C CSS Validator is a tool for checking the CSS Code.

Check CSS

7. Check Accessibility

Accessibility is an important aspect of web development. It is about contrast, character size, screen reader compatibility etc. Use tools like experte.com to evaluate your site's accessibility.

Check Accessibility

8. Check Carbon Rate

The concept of a website's carbon rate is debated, but it can still be a useful indicator of how your site impacts both cost and environmental footprint. Smaller, faster sites generally require less server capacity, which can reduce hosting expenses and improve UX. Carbon rate tools estimate the energy usage associated with loading your pages. You can use the links below to explore your site's approximate carbon footprint.

Check Carbon Rate 1 Check Carbon Rate 2

9. Check Broken Links

Broken links can negatively impact your business, UX and SEO. Use tools like below to identify and fix any broken links on your site.

Check Broken Links

10. Check Cross Browser

Live check using several browsers you may find consol errors and zoom issues. Right click on the page and hit Inspect (or similar). Use the built in mobile testing tools to check your site's responsiveness. The inspection tools is a powerful way to debug your site.

Check Different Browsers

11. Check SSL

SSL is about secure "transfer" of data. Check your SSL configuration to ensure your site is secure. A tool like SSL Labs provides a detailed analysis of your SSL setup and grades its security level.

Check SSL