The 2026 Website Audit Checklist: 5 Areas Every Business Must Review
A practical website audit covers more than just speed. Here's the complete 5-pillar framework used by performance agencies — and how to run it free on your own site.
Why Websites Need Regular Audits
Most business websites are audited at launch and then left alone for years. But websites exist in a changing environment: Google's algorithms update, accessibility standards evolve, JavaScript vulnerabilities emerge, and new channels like AI search create entirely new requirements. An annual 5-pillar audit is the minimum cadence for any site generating business.
Pillar 1: Performance
Performance is measured through Google's Core Web Vitals — LCP, TBT, and CLS — summarised as a score out of 100. This affects your Google organic rankings and your Google Ads cost per click.
What to check: LCP under 2.5s, TBT under 200ms, CLS under 0.1. Any score below 80 warrants investigation, especially for ad landing pages.
Pillar 2: SEO
SEO in an audit context means technical foundations — whether Google can find, crawl, and rank your pages correctly. The checklist:
- Unique title tag and meta description on every indexed page
- Open Graph tags for social sharing previews
- Mobile-responsive design
- Sitemap submitted to Google Search Console
- Robots.txt not blocking key pages
- Structured data (JSON-LD) on service and product pages
Pillar 3: Accessibility
Accessibility covers legal risk (ADA/WCAG 2.1 AA) and the experience of the 15–20% of users with some form of disability. Issues most commonly cited in demand letters:
- Images missing alt text
- Form fields without labels
- Colour contrast below 4.5:1 for body text
- Interactive elements unreachable by keyboard
Pillar 4: Security
Most website security issues aren't sophisticated attacks — they're outdated JavaScript libraries and missing HTTP headers any attacker can check in seconds:
- JavaScript dependencies up to date (no known CVEs)
- HTTPS with no mixed-content warnings
- Security headers: Content-Security-Policy, HSTS, X-Frame-Options
Pillar 5: AI Search Visibility
As AI-powered search (ChatGPT, Perplexity, Google AI Overviews) becomes a meaningful discovery channel, structured sites gain a growing advantage:
- JSON-LD Organisation schema with name, URL, and contact details
- Factual, statistical content — not just marketing copy
- At least 2–3 headings written as direct questions
- FAQ section on key landing pages
How to Run the Audit
You can check each pillar manually using free tools, or run an automated 5-pillar audit that checks all of them simultaneously and outputs a prioritised fix list with revenue impact estimates — significantly faster than the manual approach.
FREE 60-SECOND AUDIT
SEE HOW YOUR SITE SCORES ACROSS ALL 5 PILLARS
Performance · SEO · Accessibility · Security · AI Visibility — with a revenue impact estimate. No sign-up required.
RUN FREE AUDIT →