Did you ever think that technical errors could take up to 30-40% of your website's organic traffic?
A technical SEO audit is therefore one of the most important basic steps if you want to have a truly competitive online presence.
In this article, we'll guide you through how to spot hidden errors, improve your website's performance, and give you a handy Tech SEO checklist to make sure you don't miss anything.
Why is a technical SEO audit important?
Technical SEO is all about optimising under the hood of your website:
to ensure that Google's robots can crawl, interpret and index your site seamlessly.
A regular audit not only makes your website more transparent for Google, but also:
- speeds up page loading,
- improves the Core Web Vitals indicators,
- reduces the reversal rate,
- and contribute to a better user experience.
Did you know? - 53% of slow-loading websites are abandoned within 3 seconds (Source: Google, 2023)
The technical SEO audit process
A well-constructed tech SEO audit not only looks for errors, but also collects data, performs analysis and provides an improvement plan.
| Step by | Activity | Goal |
| 1. Preparations | Defining audit objectives and KPIs, selecting tools (e.g. Google Search Console, Screaming Frog, Ahrefs) | Precise focus |
| 2. Manual check | Usability, robots.txt, sitemap.xml, URL structure, index checking with „site:” operator | Detection of structural errors |
| 3. Crawl analysis | 404 errors, duplicate content, canonical tags, redirects (301-302) | Correcting mapping errors |
| 4. Search Console and mobile test | Mobile friendly site, sitemap scanning, mobile indexing check | Mobile and indexing optimisation |
| 5. Website speed | PageSpeed Insights and CWV (LCP, CLS, INP) testing | Improve loading time |
| 6. Structured data | Schema.org implement elements (article, product, event) | Increase visibility in the SERP |
Important steps that should not be left out of the process:
- Check your sitemap and robots.txt files.
- Check for 404 errors and redirects.
- Test the speed indicators and mobile-friendliness.
- Implement structured data.
- Update the audit quarterly.
The three main CWV indicators
| Indicator | Report from | Ideal value |
| LCP (Largest Contentful Paint) | Loading time of the main content | < 2.5 sec |
| CLS (Cumulative Layout Shift) | Visual displacement rate | < 0.1 |
| INP (Interaction to Next Paint) | User interaction speed | < 200 ms |
[Source: Google Page Experience Report, 2024]
Technical SEO audit checklist
Do you know what the most important tech SEO settings are?
You can use the following checklist to check if your website is technically in 100% state.
Here's the HiData tech SEO checklist used by our experts:
✅ Crawlability & Indexing
- Robots.txt properly configured
- Sitemap.xml contains all the pages you want to index
- No important URLs blocked
✅ Speed and Performance
- LCP < 2.5 seconds
- CLS < 0.1
- Images optimized (WebP, lazy load)
- CSS and JS minified
✅ Mobile optimisation
- Mobile-friendly design verified (Google Mobile-Friendly Test)
- Experience errors fixed
✅ Structured data
- Schema.org markup set up
- No incorrect structured data
✅ Security and URL structure
- HTTPS in use
- Logical URL structure
- 404 and redirection errors fixed
Technical SEO audit at HiData
HiData's technical SEO audit service aims to not only detect errors, but also provide concrete suggestions for improvement.
Why choose us?
- We produce a detailed, transparent report.
- We prioritise the mistakes and opportunities.
- We will develop an individual strategy for improvement.
- We provide continuous monitoring.
Learn more: tech SEO service '
Why do you need a technical SEO audit?
A technical SEO audit is like a thorough health check:
detects invisible errors before they cause serious problems.
Who regularly audits their website:
- run a faster, more stable website,
- improve your Google ranking,
- and in the long term, achieve significant traffic growth.
Did you know? - At HiData Tech SEO audit, we not only analyse but also fix the problems - so every improvement yields measurable results.
Frequently asked questions about Technical SEO audit
1. What is a technical SEO audit?
A technical SEO audit is a comprehensive analysis that identifies technical flaws in your website and ways to improve it for better search engine optimization.
2. How often is an audit recommended?
At least twice a year, or quarterly for larger sites.
3. What tools does HiData use during the technical SEO audit?
Google Search Console, Ahrefs, SEMrush, Screaming Frog, PageSpeed Insights.
4. How long does it take to complete a full audit?
3-10 working days depending on the size of the website.
5. Why is HiData's audit better?
Because we not only identify the errors, we also deliver a plan for improvement - so a Tech SEO audit delivers real results.
Want to know how „healthy” your website is from a technical point of view?
Get a free technical SEO pre-audit from the HiData team and improve your Google rankings today!
