Learn how to audit your website's SEO, performance, security, and accessibility. Use free tools to identify issues and improve your site's ranking and speed.
Most websites are leaking rankings, losing visitors, and exposing vulnerabilities without their owners realizing it. I know this because I've audited hundreds of sites — including my own — and the pattern is always the same. The site looks fine on the surface. Traffic seems okay. Then you run an actual website analyzer and discover that your largest contentful paint is 4.2 seconds, your meta descriptions are missing on 30% of pages, and your security headers might as well not exist.
The good news: everything is fixable. The better news: you can find every single one of these issues for free.
This guide walks through a complete website audit — SEO, performance, security, accessibility, and structured data — with actionable steps for each area. Not theory. Not "it depends." Actual things you can check and fix today.
A website audit is not just an SEO exercise. Search engines evaluate your site holistically. Google considers page speed a ranking factor. Chrome flags sites without HTTPS. Core Web Vitals directly affect your search visibility. Accessibility issues reduce your effective audience and can create legal exposure.
Running a site analyzer that covers all these areas at once saves you from the fragmented approach of checking SEO in one tool, performance in another, and security in a third. You miss the connections between issues when you do that. A slow page might rank poorly not because of thin content but because a render-blocking script is destroying your Core Web Vitals score.
You can start with a comprehensive Website Analyzer that checks all of these areas in a single scan. But understanding what each check means — and how to fix what it finds — is what separates a useful audit from a vanity report.
SEO problems fall into two categories: things search engines cannot find, and things search engines find but do not like. Here is what to check.
Every indexable page needs a unique title tag (50-60 characters) and a meta description (150-160 characters). This is basic, and it is still the most common issue I find on audits.
What to check:
If you are building a new site or fixing existing tags, a Meta Tag Generator eliminates the guesswork and ensures your tags are the right length with the right structure.
Your H1 should be unique per page and contain your primary keyword. H2 through H6 tags should follow a logical hierarchy — do not skip from H1 to H4 because you liked the smaller font size.
Common mistakes:
Search engines can only rank pages they can find and index. Your robots.txt file tells crawlers which pages to skip, and your sitemap tells them which pages to prioritize.
What to check:
Internal links distribute authority across your site and help search engines understand your content hierarchy. Every important page should be reachable within 3 clicks from the homepage.
Actionable tips:
Structured data helps search engines understand what your content is about and can earn you rich snippets in search results — star ratings, FAQ dropdowns, product prices, event dates.
Priority schema types:
AkousaOrganization or LocalBusiness for your about pageArticle or BlogPosting for content pagesFAQ for pages answering common questionsProduct for e-commerce pagesBreadcrumbList for navigationYou can generate valid JSON-LD markup with a Schema Markup Generator without writing it by hand. Test your implementation with Google's Rich Results Test before deploying.
Google's Core Web Vitals are three specific metrics that measure user experience. They directly impact your search rankings, and they are measurable.
LCP measures how long it takes for the largest visible content element (usually a hero image or heading) to load. Target: under 2.5 seconds.
How to fix a slow LCP:
<link rel="preload">INP replaced First Input Delay in March 2024. It measures the latency of all interactions throughout the page lifecycle, not just the first one. Target: under 200 milliseconds.
How to fix poor INP:
requestIdleCallback or scheduler.yield()CLS measures unexpected layout movement. When a button shifts as you are about to click it, that is a layout shift. Target: under 0.1.
How to fix CLS:
width and height attributes on images and videosfont-display: swap with font preloading to prevent text reflowCore Web Vitals are the minimum. A thorough performance check also covers:
Security is not optional, and search engines agree. Chrome shows "Not Secure" for HTTP sites. Google has used HTTPS as a ranking signal since 2014. But HTTPS alone is not enough.
These HTTP response headers protect your visitors from common attacks. Check whether your server sends them.
Content-Security-Policy (CSP): Prevents cross-site scripting (XSS) by specifying which sources of content are allowed. This is the most important security header and the hardest to configure correctly.
Strict-Transport-Security (HSTS): Forces browsers to use HTTPS for all future requests. Set max-age to at least 31536000 (one year) and include includeSubDomains.
X-Content-Type-Options: Set to nosniff to prevent browsers from MIME-sniffing responses away from the declared content type.
X-Frame-Options: Prevents your site from being embedded in iframes on other domains, blocking clickjacking attacks. Set to DENY or SAMEORIGIN.
Referrer-Policy: Controls how much referrer information is sent with requests. strict-origin-when-cross-origin is a sensible default.
Permissions-Policy: Restricts which browser features (camera, microphone, geolocation) your site can use. Disable everything you do not need.
Beyond headers, a proper security audit checks for:
.env files, backup files, or configuration files in public directoriesManual testing catches some of this. Automated scanning catches more. The Website Analyzer Pro includes 38 specialized modules that cover vulnerability scanning, GDPR compliance checks, CSP analysis, and third-party script auditing in a single pass. It checks what most free scanners skip entirely — things like API key exposure, CORS misconfigurations, and cookie security flags.
Accessibility is not a separate concern from SEO. Screen readers, search engine crawlers, and keyboard-only users all rely on the same underlying HTML structure. Fix accessibility and your SEO often improves as a side effect.
Color contrast: Text must have a minimum contrast ratio of 4.5:1 against its background (WCAG 2.1 AA). Use a contrast checker — do not trust your eyes.
Alt text on images: Every informational image needs descriptive alt text. Decorative images should have empty alt attributes (alt=""). Missing alt text is both an accessibility failure and a missed SEO opportunity.
Keyboard navigation: Can you Tab through every interactive element on the page? Can you activate buttons with Enter and Space? Can you close modals with Escape? Try it right now on your own site.
Form labels: Every input field needs a visible, associated label. Placeholder text is not a label — it disappears when the user starts typing.
Focus indicators: Do not remove the default focus outline with outline: none unless you replace it with something equally visible. Keyboard users need to see where they are.
ARIA usage: Use ARIA attributes only when native HTML elements cannot express the interaction. A <button> does not need role="button". Incorrect ARIA is worse than no ARIA.
Heading hierarchy: This overlaps with SEO. Screen reader users navigate by headings. If your heading structure is broken, they cannot navigate your page.
Automated tools catch roughly 30-40% of accessibility issues. They are good at finding missing alt text, low contrast, and missing form labels. They cannot test whether your custom dropdown is keyboard-accessible or whether your error messages make sense to a screen reader user.
Run automated checks first, fix everything they find, then do manual keyboard and screen reader testing.
Google uses mobile-first indexing, meaning it primarily uses the mobile version of your content for ranking. If your site does not work well on mobile, you are losing rankings regardless of how good your desktop version is.
<meta name="viewport" content="width=device-width, initial-scale=1">. Without it, mobile browsers render your page at desktop width and scale it down.max-width: 100%, and code blocks without overflow handling.Here is the workflow I use for a complete website audit:
Step 1: Automated scan. Run your site through a Website Analyzer to get a baseline across all categories. Note every issue it flags.
Step 2: Prioritize by impact. Not all issues are equal. A missing HSTS header matters more than a meta description that is 5 characters too long. Broken internal links matter more than imperfect heading hierarchy. Security vulnerabilities always come first.
Step 3: Fix technical issues first. HTTPS, security headers, broken links, crawl errors, Core Web Vitals. These are the foundation. Content optimization is pointless if search engines cannot crawl your site or users bounce because it takes 6 seconds to load.
Step 4: Optimize content. Title tags, meta descriptions, heading structure, structured data, internal linking. These changes are low-effort and high-impact.
Step 5: Test accessibility. Run automated checks, then do manual keyboard and screen reader testing. Fix everything the automated tools find — that is the easy part.
Step 6: Monitor continuously. A single audit is a snapshot. Set up monitoring to catch regressions. Core Web Vitals can degrade when you add a new third-party script. Security headers can disappear after a server configuration change. New content can be published without proper meta tags.
For ongoing monitoring, the Website Analyzer Pro offers scan diffing — it compares your current scan against previous results and highlights what changed. Combined with its 38 analysis modules covering everything from GDPR compliance to third-party script auditing, it turns a one-time audit into a continuous improvement process.
A comprehensive website audit is not a luxury. It is the minimum viable maintenance for any site that depends on search traffic. The issues described in this guide — missing meta tags, slow LCP, absent security headers, broken accessibility — exist on most websites right now. The difference between sites that rank and sites that do not is often not content quality or backlink count. It is whether someone took the time to find and fix the technical issues that make search engines and users trust a site less.
Start with a full scan. Fix what it finds. Repeat monthly. That is the entire strategy, and it works.