Your website can look perfect and still be quietly broken underneath: slow on mobile, uncrawlable in places, insecure, or failing accessibility. A technical website audit finds those hidden problems before they cost you rankings, customers and trust. This guide explains what a technical website audit is, what it covers, how to run one step by step, and the tools to use.
Quick answer: A technical website audit is a health check of your site’s infrastructure: crawlability and indexing, speed and Core Web Vitals, mobile-friendliness, security, code quality, broken links, accessibility and tracking. Audit quarterly, fix blockers first, then work down by impact.
What is a technical website audit?
A technical website audit is a systematic review of the technical foundations that determine whether your site performs well for both users and search engines. It goes broader than a pure SEO audit: alongside crawling and indexing, it checks speed, security, mobile experience, accessibility and code health. The goal is a clear, prioritised list of what is wrong and what to fix first.
Why a technical website audit matters
Technical issues are silent. A slow page, an accidental noindex or an expired certificate will not announce itself, but each one erodes rankings, conversions and trust. A regular audit:
- Protects your search visibility by keeping the site crawlable and fast
- Improves user experience and conversion on mobile and desktop
- Catches security and accessibility risks before they become liabilities
- Gives you a documented baseline to measure improvements against
What a technical website audit covers
Work through these areas. The first few are usually the highest impact.
1. Crawlability and indexing
Confirm search engines can reach and index the right pages. Check robots.txt, the XML sitemap, indexation in Google Search Console, canonical tags, and any accidental noindex on important pages.
2. Site speed and Core Web Vitals
Measure performance on mobile and desktop and aim to pass Core Web Vitals:
|
Metric |
Measures |
Target |
|
LCP |
Loading of main content |
2.5s or less |
|
INP |
Responsiveness to interaction |
200ms or less |
|
CLS |
Visual stability |
0.1 or less |
Compress images, minify code, enable caching, use a CDN and remove heavy third-party scripts.
3. Mobile-friendliness
With mobile-first indexing, your mobile version is what gets ranked. Check responsive layout, tap targets, readable fonts and mobile parity, meaning mobile has the same core content and structured data as desktop.
4. Security
Verify the whole site runs on HTTPS with a valid SSL certificate and no mixed-content warnings. Check for outdated plugins or software, exposed admin areas and other common vulnerabilities.
5. Code quality and errors
Look for broken or bloated code, render-blocking resources, server errors and console warnings that slow the site or confuse crawlers.
6. Broken links and redirects
Find and fix broken internal links and 404s on important pages, and replace redirect chains with single 301s.
7. Accessibility
Check against WCAG basics: alt text on images, sufficient colour contrast, keyboard navigation, labels on forms and captions on video. Accessibility improves usability for everyone and reduces legal risk.
8. Structured data and schema
Validate that relevant schema (Organisation, Breadcrumb, FAQ, Product) is present and error-free so search engines understand your content.
9. Analytics and tracking
Confirm analytics and conversion tracking are installed correctly, firing once, and capturing the actions that matter, so you can measure the impact of your fixes.
How to conduct a technical website audit, step by step
- Set the scope and goals. Decide what you are auditing and what success looks like.
- Gather data. Pull Google Search Console, Analytics and a full site crawl.
- Tackle the technical foundations first. Crawlability, indexing, speed, security and mobile.
- Review SEO and structure. Titles, headings, canonicals, internal linking and schema.
- Check accessibility and UX. WCAG basics, navigation and conversion paths.
- Benchmark competitors. See where rivals are stronger technically.
- Prioritise and document. Rank issues by impact and effort, and record everything.
- Fix, then re-test. Implement changes, verify in Search Console, and monitor.
Technical website audit checklist
|
Area |
Key check |
|
Crawl & index |
Sitemap, robots.txt, no accidental noindex |
|
Speed |
Pass LCP, INP and CLS |
|
Mobile |
Responsive, mobile parity |
|
Security |
HTTPS, valid SSL, no vulnerabilities |
|
Code |
No server errors or render-blocking issues |
|
Links |
No broken links or redirect chains |
|
Accessibility |
Alt text, contrast, keyboard access |
|
Schema |
Valid, relevant structured data |
|
Tracking |
Analytics and conversions firing correctly |
Tools for a technical website audit
- Google Search Console for indexing, coverage and Core Web Vitals
- Screaming Frog or Sitebulb to crawl and find issues
- PageSpeed Insights for performance
- Semrush or Ahrefs Site Audit for ongoing health scores
- WAVE or axe for accessibility
- Schema validators for structured data
How often should you audit your website?
A full technical audit once or twice a year is a solid baseline, with lighter monthly checks on Search Console, Core Web Vitals and uptime, plus an audit after any major redesign or migration.
Frequently asked questions
What is the difference between a technical website audit and an SEO audit?
An SEO audit focuses on search visibility. A technical website audit is broader, covering speed, security, accessibility and code health as well as technical SEO.
How long does a technical website audit take?
A focused audit takes a few days; a deep audit of a large site can take one to two weeks depending on size and complexity.
Can I do a technical audit myself?
Yes, using the checklist and tools above. An agency adds depth, prioritisation and the resources to fix what it finds, which helps for larger or business-critical sites.
How often should I run one?
Quarterly is a good baseline for most businesses, with a full audit after any redesign, migration or major traffic drop.
Which issues should I fix first?
Blockers first: crawl and index problems, then speed, security and mobile, then everything else by impact.
Get a professional technical audit
A website is only as strong as its foundations. If you want a full technical audit and a team to fix what it finds, talk to MediaPlus Digital. Explore our web design and SEO services, and read our deeper guide to technical SEO for the search side of your audit.
