A website audit is a structured check of every page for the problems that quietly cost you traffic, trust, and conversions: broken links, inconsistent navigation, missing metadata, slow pages, and forms that fail without telling anyone. Run it as a one-time cleanup or as a recurring website maintenance checklist. In 2026 it has a second job: confirming that AI search engines can read, trust, and cite your site. This website audit checklist covers both, and it works on any platform: WordPress, Webflow, Shopify, Wix, or hand-coded.

What a website audit has to catch in 2026

Your website answers to three readers, and they do not forgive the same mistakes. The visitor leaves when a page is slow or confusing. The search crawler rewards clean structure, fast pages, and links that resolve, the fundamentals a technical SEO and web audit has always covered. The third reader is new: an AI model that reads your page and decides whether it is clear enough to quote.

That third reader raised the stakes. A 2025 Pew Research Center study found that when Google shows an AI summary, people click a regular result only 8% of the time, against 15% when no summary appears (Pew Research Center, 2025). As the answer becomes the destination, a page an AI cannot parse cleanly is one it quietly skips. Most audit templates were built for the first two readers and stop at titles, links, and speed. In 2026 that leaves half the job undone.

The silent breaks most audits miss

Loud problems get fixed fast. A page that errors out, or a form that visibly fails, gets caught within the hour. The costly problems are quiet: the issues a page carries while looking completely done. These are the ones an automated site audit tool usually scores green, and a trained reviewer still flags:

  • Navigation or a footer that drifts out of sync on one template, so the site stops feeling like one site.
  • A page that is live but linked from nowhere, invisible to menus, search, and crawlers alike.
  • Metadata that argues with itself: an author, date, or canonical tag that does not match its page.
  • A lead form that submits cleanly and records nothing, so the conversion never reaches you.
  • A heading order with no single H1, or several competing for the role.

None trip an alarm. They drain trust one visit and one crawl at a time. (I wrote about why I chase these unprompted in my Ground Truth column.) The rest of this checklist finds them on purpose, starting with the breaks that hide best.

Step 1: Shared elements (website consistency)

Website consistency means the parts that should be identical on every page actually are: the header, the navigation, the footer, and the brand basics. On a growing site these drift, because most platforms make it easy to edit one page's copy of a shared element without updating the rest. Find a single source of truth for these elements, then confirm every template matches it. How depends on your platform:

  • WordPress: template parts (header.php / footer.php) or, on block themes, synced patterns and global template parts; a global header/footer plugin if your theme fights you.
  • Webflow: Symbols and Components, which update everywhere at once.
  • Shopify: theme sections and blocks referenced across templates.
  • Wix: the global header and footer (edit once, applied site-wide).
  • Hand-coded: server-side includes, or one canonical reference block you build every page from.

Checklist:

  • Header, navigation, and footer are identical across every template
  • The same links appear in the same order on every page
  • Logo, brand colors, and fonts match site-wide
  • No page carries an outdated nav item or an old footer

This is the section most teams skip and the one that quietly undermines the rest. If keeping it consistent by hand is unrealistic at your size, it is the kind of thing IG sets up as a managed standard.

Step 2: Structure and SEO basics (your technical SEO checklist)

This is the part most audits already cover, so move quickly and be thorough. These are the signals search crawlers and AI models both rely on to understand a page.

Checklist:

  • One clear H1 per page, with a logical H2/H3 hierarchy under it
  • Unique, hand-written title tag and meta description on every page
  • Canonical tags that point to the correct URL (no stray or self-conflicting canonicals)
  • No broken internal or outbound links, and no orphaned pages
  • An up-to-date sitemap.xml that lists every page you want found
  • Descriptive alt text on meaningful images
  • Mobile rendering and Core Web Vitals in good standing

Step 3: AI-readiness (AEO and GEO)

This is the step that separates a 2026 audit from a 2022 one. AI answer engines reward pages that are easy to parse, well structured, and consistent. Pages with FAQ schema, for example, are far more likely to surface in AI Overviews, and structured Q&A content earns meaningfully higher citation rates (Frase). Freshness matters too: the large majority of AI citations come from pages updated in the last year.

Checklist:

  • A direct, 40-to-60-word answer near the top of each key page
  • FAQPage, Article, and BreadcrumbList schema where they apply
  • An llms.txt file at your site root declaring how AI tools should use your content
  • Headings phrased the way a person would actually ask the question
  • Consistent structure across templates, so models can place your pages
  • A quarterly check of who gets cited for your top buyer questions across ChatGPT, Claude, and Perplexity

Earning citations is the whole point of Answer Engine Optimization, and it is what IG's Next Best Action product is built to measure and improve.

Step 4: Conversion and tracking

A site can rank, get cited, and still leak every opportunity if the conversion path is broken. This is where an audit pays for itself, and it is the step most often skipped.

Checklist:

  • Every form submits and records a tracked conversion (test each one end to end)
  • Analytics and conversion events fire correctly (GA4 events, lead tracking)
  • Primary CTAs are present, visible, and consistent across pages
  • No dead ends: every key page offers a clear next step
  • Thank-you and confirmation states actually load

AI-referred visitors tend to convert at a higher rate than standard organic traffic, so a clean tracking setup is how you prove the AEO work is paying off. If your forms or tracking are firing blind, that is usually the fastest fix with the biggest return.

Step 5: Make it recurring

An audit you run once is out of date the moment someone edits a page. The teams that stay consistent treat this as a standing process. Put the routine checks on a schedule: a lighter consistency and link sweep monthly, a full website audit quarterly. Automate the repetitive parts where you can, a check that compares every page against your standard and flags anything that has drifted will catch problems in days instead of months. The goal is to never let the site quietly fall out of line between reviews.

Checklist:

  • A recurring schedule (monthly light sweep, quarterly full audit)
  • Automated checks for consistency, broken links, and core SEO signals
  • A named owner who reviews the flags and acts on them
  • An exception list for pages allowed to differ (landing and gated pages)

Turn the checklist into a system

On a site of any size, this checklist will surface more than you expect. Fixing it once is the easy part. Keeping it fixed, on every page, as the site grows, is the real work, and it is the kind of ongoing ownership a fractional CMO engagement is built for. If you would rather have your site audited, repaired, and kept consistent for both AI search and conversions, start a conversation with our team.