Website Audit Errors: 8 Common Ones and How to Fix Them

If you've ever run a site audit and stared at a 40-item report with no idea which line to fix first, you're not alone. Most website audit errors fall into a small, predictable set of categories — and once you know what they are, triaging them takes minutes instead of hours.

This post breaks down the eight website audit errors that show up most often, across performance, SEO, accessibility, and content quality. For each one, you'll get what it is, why it matters, and a fix you can actually act on today — not vague advice to "improve your SEO."

We'll also cover the mistakes people make while fixing these errors, which is where a lot of well-intentioned cleanup work quietly makes things worse. By the end, you'll have a working mental model for reading any audit report, not just this list.

A Quick Framework: Severity vs. Effort

Before diving into each error, it helps to know which ones deserve your attention first. Not every red flag in an audit report is equally urgent — some tank rankings and conversions immediately, others are slow bleeds.

ErrorTypical ImpactFix EffortPriorityAccidental noindex tagsSevere — pages vanish from search entirelyLow (usually one line of code)Fix immediatelySlow LCP (Core Web Vital)High — rankings + conversion lossMedium-HighFix this sprintBroken linksMedium — trust + crawl wasteLow-MediumFix this sprintDuplicate contentMedium-High — cannibalizationMediumFix this sprintMissing meta descriptionsLow-Medium — CTR loss, not rankingsLowBatch-fixOrphan pagesMedium — wasted content equityMediumBatch-fixMissing/empty alt textMedium — accessibility + image SEOLowBatch-fixMixed content / no SSL redirectMedium-High — trust + browser warningsLowFix immediately

Use this table as your triage order. Now let's go through each one.

1. Broken Links (Internal and External)

Broken links are the single most common finding in almost any audit, and they come from two directions: internal links pointing to pages you've since deleted or renamed, and external links pointing to sites that have moved, redesigned, or shut down.

Each broken internal link wastes crawl budget and breaks the flow of link equity through your site. Each broken external link — especially in older, still-ranking posts — quietly erodes the trust signal that page originally sent to both readers and search engines.

Why It Keeps Happening

Broken links accumulate silently. You rename a URL slug during a redesign, delete an old landing page, or an external source restructures their site — and nothing tells you until a crawler (or a frustrated visitor) hits a 404.

The Fix

Run a link crawl across every page, not just the homepage — a broken link three clicks deep is just as damaging as one on your top page. Categorize results as internal vs. external, since the fix differs: internal 404s get a 301 redirect or a corrected link; external 404s get replaced with a current, reputable source or removed if there's no good replacement. Re-crawl after fixing to confirm nothing was missed, since manual link checks routinely miss 15–20% of broken URLs on sites over 20 pages.

2. Missing or Poorly Optimized Meta Descriptions

A missing meta description isn't a ranking penalty on its own — Google will auto-generate a snippet from your page content if you leave the field blank. But that auto-generated snippet is rarely as compelling as one you write yourself, and it directly affects your click-through rate on the same impressions you've already earned.

This is exactly the gap in the BugViso traffic data referenced in the strategy behind this post: pages that show up in search results with zero clicks despite real impression volume. A weak or missing description is often part of that story.

The Fix

Write a unique meta description for every page, 150–160 characters, that states the specific value the reader gets — not a vague summary of the topic. Front-load your primary keyword in the first 20 words, since some search engines still bold matching terms in the snippet. Avoid duplicating the same description across multiple pages; that's its own audit flag (see Error #5).

3. Slow Largest Contentful Paint (LCP)

LCP measures how long it takes for the biggest visible element on a page — usually a hero image or headline block — to fully render. It's one of Google's three Core Web Vitals, and it's the metric most audits flag as failing, because most sites never optimize for it intentionally.

An LCP over 2.5 seconds is considered "needs improvement," and anything past 4 seconds is flagged as poor [ADD SOURCE LINK — cite Google's official Core Web Vitals thresholds documentation]. Slow LCP correlates directly with higher bounce rates on mobile, where network conditions are far less forgiving than a developer's fiber connection.

Common Causes

• An unoptimized hero image served at full resolution instead of a compressed, correctly sized format
• Render-blocking CSS or JavaScript loaded before the main content
• A slow Time to First Byte (TTFB) that delays everything downstream, including LCP

The Fix

Compress and resize your largest above-the-fold image — converting a large JPEG or PNG hero image to WebP alone often cuts 40–60% of its file size with no visible quality loss. Defer non-critical JavaScript and inline critical CSS so the browser isn't blocked from painting content. If TTFB is the bottleneck, that usually points back to server response time or a missing CDN, not the front end at all — worth checking before you spend a week optimizing images that weren't the real problem.

4. Accidental noindex Tags

This is the most severe error on this list, and also the fastest to fix once found. A noindex directive — whether in a <meta name="robots"> tag or an X-Robots-Tag HTTP header — tells search engines not to include that page in results at all. It's a legitimate tool for pages you want hidden (staging environments, thank-you pages), but it's disastrous when it ends up on a page you actually want ranking.

This usually happens one of three ways: a staging-site setting that never got removed before launch, a CMS default that applies noindex to a page type globally, or a plugin misconfiguration that nobody noticed because the page still loads fine in a browser — it just doesn't show up in search.

The Fix

Check both the meta tag and the HTTP header — a page can pass a visual meta-tag check and still be blocked at the header level, which is why manual review misses this often. Cross-reference against robots.txt too; a Disallow rule can produce the same disappearing-page effect even without a noindex tag present. If a page has been noindexed for weeks or months, expect a delay after fixing it before Google fully re-crawls and re-indexes — request indexing manually in Search Console to speed that up.

5. Duplicate Content

Duplicate content splits ranking signals between two or more pages competing for the same query — often called keyword cannibalization. It shows up in a few forms: near-identical body content across pages, duplicate <title> tags, duplicate meta descriptions, or duplicate H1s.

The most common source isn't copy-paste laziness — it's structural. E-commerce filter URLs, printer-friendly page versions, and staging URLs that got indexed alongside the live page all generate near-duplicate content without anyone writing a word twice.

The Fix

Identify exact duplicates first (easy — an exact content hash match), then near-duplicates (harder — requires similarity scoring, since two pages can share 85% of their content without being identical). For structural duplicates like filter or parameter URLs, use canonical tags pointing to the primary version rather than trying to rewrite each variant. For genuinely duplicate blog or landing page content, consolidate into a single stronger page and 301-redirect the weaker one — don't leave both live.

6. Missing or Empty Alt Text on Images

Alt text serves two audiences at once: screen readers, for accessibility compliance under WCAG guidelines [ADD SOURCE LINK — cite WCAG 2.1 official documentation], and search engines, which use it as one of the only signals they have for understanding image content.

An empty alt="" attribute is sometimes intentional — for purely decorative images, that's correct WCAG practice. The problem is when it's empty (or missing entirely) on informational images: product photos, screenshots, infographics, or anything that conveys meaning a sighted user would get at a glance.

The Fix

Audit every image on the page, not just the hero image most tools default to checking. Write descriptive, specific alt text for informational images — "SaaS dashboard showing monthly recurring revenue chart," not "image1" or "screenshot." Leave alt="" deliberately empty for purely decorative images (background textures, spacers) so screen readers skip them instead of reading a meaningless filename aloud.

7. Mixed Content and Missing HTTPS Redirects

If your site runs on HTTPS but still loads even one resource — an image, a script, a stylesheet — over unencrypted HTTP, browsers flag it as mixed content. Depending on severity, that can mean a broken padlock icon, a blocked resource, or an outright "not secure" warning that erodes visitor trust in seconds.

A related, equally common finding: the HTTP version of your domain doesn't automatically redirect to HTTPS. That leaves an unencrypted entry point live even though your main site is secure — a gap that both hurts trust signals and can be exploited.

The Fix

Scan every page for HTTP-loaded resources and update each one to its HTTPS equivalent — this is almost always a hardcoded URL left over from before an SSL migration. Confirm your server forces an automatic redirect from the HTTP version of every URL to HTTPS, not just the homepage. While you're in there, check your SSL certificate's expiry date; certificates that lapse without warning are a surprisingly frequent, entirely preventable audit failure.

8. Orphan Pages With No Internal Links

An orphan page is one that exists on your site — sometimes ranking, sometimes not — with zero internal links pointing to it. Search engines can still find it via a sitemap, but it receives no link equity from the rest of your site, and human visitors can't reach it through normal navigation at all.

Orphan pages accumulate the same way broken links do: through redesigns, category restructuring, or old campaign landing pages that were never linked from the main navigation to begin with.

The Fix

Map your internal link graph to find pages with zero inbound internal links — this requires crawling actual rendered links, not just checking your navigation menu, since a lot of internal linking happens contextually within body content. For pages worth keeping, add at least 2–3 contextual internal links from relevant existing content. For pages that no longer serve a purpose, redirect or remove them rather than leaving them to accumulate as dead weight.

Mistakes People Make While Fixing Audit Errors

Finding these errors is only half the job — how you fix them matters just as much.

Fixing the symptom, not the cause. Compressing one slow-loading image without checking whether TTFB is the actual bottleneck means you'll be back auditing the same LCP problem next quarter.

Batch-fixing without re-auditing. Teams fix 20 broken links in one sprint, mark the ticket closed, and never re-crawl to confirm the fixes actually resolved — sometimes a redirect gets misconfigured and creates a new 404 in the process.

Treating every finding as equally urgent. A missing meta description on a low-traffic blog post does not deserve the same sprint priority as an accidental noindex tag on your pricing page. Use the severity table above, not the order items appear in a report.

Auditing only the homepage. Most of these errors — orphan pages, duplicate content, broken links — only become visible when you crawl the whole site. A single-page check will miss the majority of what's actually wrong.

FAQ

What's the most common website audit error? Broken links consistently top most audit reports, simply because they accumulate the fastest — every URL change, deleted page, or restructured external source creates a new one.

Which audit error hurts SEO the most? An accidental noindex tag is the most severe, because it removes a page from search results entirely rather than just weakening its ranking. Slow Core Web Vitals and duplicate content are close behind for ongoing ranking impact.

How often should I audit my site for these errors? Most of these issues — especially broken links and orphan pages — accumulate gradually rather than appearing all at once, which is why a one-time audit isn't enough. A recurring monthly or quarterly scan catches regressions before they compound.

Can I fix these errors without a developer? Several can — meta descriptions, alt text, and internal linking are content-level fixes. Others, like TTFB issues or render-blocking scripts, typically need developer involvement, though the audit itself will tell you which category each finding falls into.

Do duplicate meta descriptions actually hurt rankings? Not as directly as duplicate body content, but they hurt click-through rate, since search engines may rewrite your snippet entirely when descriptions are duplicated across pages — meaning you lose control over how your page is presented in results.

Will fixing these errors guarantee higher rankings? No single fix guarantees a ranking jump, but these errors represent baseline technical health. Leaving them unfixed puts a ceiling on how well even great content can perform.

The Takeaway

Most website audit errors aren't exotic — they're the same eight issues showing up on nearly every site, just in different combinations and severities. The teams that improve fastest aren't the ones finding rare, obscure problems; they're the ones consistently catching and fixing the common ones before they compound.

Run a free BugViso scan and get a prioritized list of exactly which of these eight errors are live on your site right now, ranked by severity, with fix suggestions built into the report.