Most websites have technical SEO problems. They don't show up as obvious symptoms — your pages still load, your visitors still browse — but they silently erode your search rankings every day. A page with a missing title tag competes at a fundamental disadvantage. A site with redirect chains wastes crawl budget. Duplicate content confuses Google about which version of your page to rank.
RankPath automatically checks for over 50 technical SEO issues on every crawl. This article explains the most common ones: what they are, why they hurt rankings, how to diagnose them, and exactly how to fix them. If you're not sure which issues your site has, run a free audit first — you'll have a prioritized list in under two minutes.
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Run Free Audit →What Are Technical SEO Issues?
Technical SEO issues are problems with how a website is built, configured, or served that prevent search engines from crawling, indexing, or understanding it correctly. They sit in the infrastructure layer — beneath the content, beneath the keywords, beneath everything else — and they affect everything above them.
Unlike content issues (thin pages, weak copy) or authority issues (few backlinks), technical issues are often binary: the tag is either present or it isn't. The redirect either works or it creates a loop. That binary nature makes them both easier to diagnose and higher-priority to fix. A missing H1 tag isn't a matter of opinion — it's a measurable gap with a known fix.
Technical SEO issues fall into three severity categories, which reflect their impact on rankings and crawlability:
- Critical — These issues directly block search engine indexing or destroy on-page ranking signals. Fix these first.
- Warning — These issues reduce ranking potential or waste search engine resources, but don't prevent indexing entirely. Fix these next.
- Info — These issues limit enhanced features (rich results, social sharing previews) but have minimal direct ranking impact. Fix these when capacity allows.
The sections below cover the most common issues in each severity tier, starting with what matters most.
Critical Issues (Fix Immediately)
Critical issues have direct, measurable impact on whether your pages appear in search results and how they compete when they do appear. These represent the highest-priority technical SEO work on any site.
1. Missing Title Tag
What it is
The HTML <title> element — the page's title in the browser tab and Google's primary title in search results — is absent from the page's <head>.
Why it hurts rankings
The title tag is one of the strongest on-page SEO signals. Google uses it to understand what the page is about, to match it to search queries, and to display a clickable headline in search results. Without a title tag, Google will either infer one from on-page content (often poorly) or display a URL. Both outcomes hurt click-through rates and weaken keyword relevance signals.
How to diagnose
In Chrome DevTools, inspect the <head> element and look for a <title> tag. Or use document.title in the browser console — an empty string means the tag is missing. RankPath flags this as a critical issue on any crawled page that lacks one.
How to fix
Add a descriptive title tag to every page. Best practice: 50–60 characters, include the primary keyword near the beginning, make it specific to the page's content. Example: <title>Technical SEO Audit Guide — RankPath</title>. If you're using a CMS like WordPress, ensure your SEO plugin (Yoast, RankMath) is configured to generate titles automatically for all page types.
2. Missing Meta Description
What it is
The <meta name="description"> tag — the short summary that appears beneath your page title in search results — is absent.
Why it hurts rankings
Meta descriptions are not a direct ranking factor, but they heavily influence click-through rate (CTR). When a description is missing, Google generates one automatically by extracting content from the page, often mid-sentence and without context. Poor CTR signals to Google that your page is less relevant than competitors, which over time depresses rankings. Additionally, a well-written description that includes target keywords appears bolded in search results when those terms match the user's query — a missing description foregoes this advantage entirely.
How to diagnose
Inspect the page's <head> for <meta name="description" content="...">. RankPath detects missing descriptions and also flags descriptions that are too short (under 70 characters) or too long (over 160 characters), both of which Google overrides with auto-generated text.
How to fix
Write a unique meta description for every page that clearly describes the page's value and includes the primary keyword. Keep it between 120–155 characters. Write it as an ad: what will the user get if they click? Avoid generic descriptions like "Learn more about our services" — these don't convert.
3. Missing H1 Tag
What it is
The page has no <h1> element — the primary heading that signals the page's main topic to both users and search engines.
Why it hurts rankings
The H1 tag is the strongest heading-level keyword signal on the page. Search engines use it to understand the central topic. Pages without an H1 appear structurally incomplete and miss an important optimization opportunity. Google has confirmed that H1 tags help it understand page structure — and a missing one is a gap in that structure.
How to diagnose
In your browser console, run document.querySelectorAll('h1').length. A result of 0 means there's no H1. Visually, the missing H1 may not be obvious — some designs style non-heading elements to look like headings without using the correct semantic tag.
How to fix
Add exactly one H1 per page that describes the page's primary topic and ideally includes the main target keyword. The H1 should match or closely parallel the <title> tag — they don't need to be identical, but they should be consistent in topic. Don't use an H1 in navigation, footers, or sidebar elements — it belongs to the main content area only.
A note on multiple H1 tags
Having more than one H1 tag on a page is a warning-level issue. While multiple H1s are technically valid HTML5 and Google can handle them, they dilute the heading structure and can confuse crawlers about what the page is really about. Keep one H1 per page.
Check Your Site for These Issues
RankPath automatically detects missing titles, meta descriptions, H1 tags, and 47 other technical SEO issues. See what's wrong with your site in under two minutes.
Start Free Audit →Warning Issues (Fix Soon)
Warning issues don't prevent your pages from being indexed, but they reduce how well your pages compete in search results. They often reflect optimization gaps, crawl inefficiencies, or user experience problems that accumulate over time.
4. Title Tag Too Short or Too Long
What it is
The page has a title tag, but it falls outside the optimal length range: shorter than 30 characters (too thin to describe the page meaningfully) or longer than 60 characters (truncated in Google's search results display).
Why it matters
Title tags under 30 characters are typically too generic ("Home", "About") to differentiate the page or capture keyword intent. Titles over 60 characters get cut off in search results with an ellipsis, often at an awkward point that loses the key message and reduces CTR. Google may also rewrite titles that are too long, and its rewrites often produce worse results than a properly optimized original.
How to fix
Target 50–60 characters for every title tag. Use a character counter while writing. Put the most important information — usually the primary keyword and brand name — within the first 50 characters. For e-commerce category pages or product listings with long names, consider dynamic templates that abbreviate gracefully.
5. Meta Description Too Short or Too Long
What it is
A meta description exists but is under 70 characters (too brief to communicate value) or over 160 characters (will be truncated by Google).
Why it matters
Short descriptions leave search users with insufficient information to decide whether to click — wasting the opportunity. Long descriptions get cut off mid-sentence in search results, often ending at an awkward point. Both outcomes reduce CTR. Google overrides descriptions outside its preferred range about 60–70% of the time, so controlling your own description requires staying within the optimal window.
How to fix
Target 120–155 characters. Write a complete value proposition: who the page is for, what they'll get, and why they should click now. Include the primary keyword naturally. End with a subtle call to action when appropriate. Audit your most important landing pages first, then work through the rest systematically.
6. Images Missing Alt Text
What it is
One or more <img> elements on the page are missing the alt attribute, or have an empty alt attribute where descriptive text is appropriate.
Why it matters
Alt text serves two purposes: it helps search engines understand what an image depicts (images without alt text are essentially invisible to crawlers), and it displays when an image fails to load and is read aloud by screen readers for accessibility compliance. Content images without descriptive alt text miss both keyword signals and accessibility requirements. This issue compounds at scale — a product catalog with thousands of images missing alt text represents a massive lost indexing opportunity for image search and long-tail keywords.
How to diagnose
In your browser console: document.querySelectorAll('img:not([alt]), img[alt=""]').length — any number above 0 indicates the issue. RankPath reports all images missing alt text on a per-crawl basis.
How to fix
Write descriptive alt text for every content image: describe what the image shows, not what it does. "Screenshot of RankPath dashboard showing SEO score" is good alt text. "image1.jpg" or an empty string is not. Decorative images (spacers, backgrounds) should have alt="" — an explicitly empty attribute — to tell screen readers to skip them. If you're using a CMS, ensure your media library workflow includes alt text as a required field.
7. Multiple H1 Tags
What it is
The page contains more than one <h1> element. While valid in HTML5, this dilutes heading structure and semantic signals.
Why it matters
When a page has multiple H1 tags, search engines get ambiguous signals about the page's primary topic. A single, clearly focused H1 sends a clean signal. Multiple H1s often indicate a structural or templating problem — navigation sections using H1 elements, or CMS themes that style the site name as an H1 on every page. This undermines the intentional H1 you wrote for the content.
How to fix
Keep exactly one H1 per page. Audit your templates: ensure the site logo/name uses an appropriate tag (often a <p> wrapped in the header element, or an H1 only on the homepage). Use H2 through H6 for all subheadings within the content. On the homepage, the H1 should describe what the site does — not just display the brand name.
8. Redirect Chains and Redirect Loops
What it is
A redirect chain occurs when a URL redirects to another URL that itself redirects — creating a multi-hop chain (A → B → C → D). A redirect loop occurs when a redirect sequence eventually points back to an earlier URL in the chain, creating an infinite cycle (A → B → A).
Why it matters
Each redirect hop adds latency (typically 100–300ms per hop) and consumes crawl budget. Google's crawlers have a redirect follow limit of around 5 hops — longer chains may result in pages not being crawled at all. Each hop in a redirect chain also potentially dilutes PageRank transfer, meaning link equity is lost in transit. Redirect loops cause crawl errors and can break user navigation entirely in some browser configurations.
How to diagnose
Tools like RankPath and Screaming Frog detect redirect chains by following redirects and reporting the full chain. Look for any URL that requires more than one hop to reach its final destination. Google Search Console's "Crawl Stats" report can also reveal redirect-related crawl inefficiency patterns.
How to fix
Update all redirects to point directly to the final destination URL, eliminating intermediate hops. If URL A should go to URL D, set A → D directly — don't rely on the chain A → B → C → D. For redirect loops, identify the circular reference in your server configuration or CMS redirect rules and break the cycle by pointing to the correct final URL. After fixing, verify with a tool that the chain is resolved.
9. Duplicate Content and Canonical Issues
What it is
The same or highly similar content is accessible at multiple URLs. Common causes: HTTP vs. HTTPS, www vs. non-www, trailing slash vs. no trailing slash, URL parameters (session IDs, tracking codes), and paginated content without proper canonical handling.
Why it matters
When duplicate pages exist, Google must decide which version to index and rank. It often chooses incorrectly or splits ranking signals across versions — neither consolidates authority where you want it. A page with 10 backlinks pointing to 5 different URL variations of the same content has effectively 2 backlinks worth of authority per version. The rel="canonical" tag tells Google explicitly which URL is the "master" — without it, you're leaving this decision to chance.
How to diagnose
Check whether your site is accessible at both http:// and https:// versions, and both www. and non-www versions. If more than one of these works without a redirect, you have duplicate content. Inspect the page's <head> for <link rel="canonical" href="..."> — if it's missing or pointing to a different URL than the one being served, there's a canonical mismatch.
How to fix
Choose one canonical URL format for your site (HTTPS, non-www is most common) and implement 301 redirects from all other variants. Add a rel="canonical" self-referencing tag to every page pointing to the preferred URL. For URL parameter variations, use either canonical tags or the robots.txt file to manage crawl access. Ensure your sitemap only includes the canonical versions of URLs.
10. Poor Site Structure (Deep Page Nesting)
What it is
Pages are buried more than 3–4 clicks away from the homepage, or the site has no clear hierarchical structure with category and subcategory pages linking to content pages.
Why it matters
Site structure affects two critical things: crawl efficiency and PageRank distribution. Googlebot uses internal links to discover and re-crawl pages. Pages that are 6 or more clicks from the homepage receive less crawl frequency and receive less PageRank (internal link equity) passed from higher-authority pages. Orphaned pages — those with no internal links pointing to them — may not be crawled at all. A flat, logical hierarchy maximizes how efficiently search authority flows through your site.
How to fix
Aim for a maximum depth of 4 clicks from the homepage for any important page. Create intermediate category pages that link to content pages if needed. Add internal links from high-authority pages (homepage, main category pages) to important content you want Google to prioritize. Use breadcrumb navigation with proper BreadcrumbList structured data to signal page hierarchy. Audit your internal link structure using Screaming Frog or RankPath to identify isolated or deeply nested pages.
Info Issues (Fix When Possible)
Info-level issues don't directly affect your core search rankings, but they limit your ability to appear in enhanced search features, control your social sharing previews, and signal completeness to search engines. These are optimization opportunities, not emergencies.
11. Missing Open Graph Tags
What it is
The page is missing one or more Open Graph meta tags: og:title, og:description, or og:image. These tags control how the page appears when shared on LinkedIn, Facebook, Slack, and other platforms that display link previews.
Why it matters
When OG tags are missing, social platforms generate link previews from whatever content they can scrape — often a random image and fragmented text. Pages shared without proper OG tags get dramatically lower engagement: no compelling image, no polished headline. For content marketing or social distribution strategies, missing OG tags mean lost traffic from every social share. OG images also appear when links are pasted in messaging apps, team tools like Slack, and email clients that render previews.
How to fix
Add the core OG tags to every page's <head>: og:title (can match your <title>), og:description (can match your meta description), and og:image (a 1200×630px image — your logo or a page-specific image). Also add og:type ("website" for static pages, "article" for blog posts) and og:url (the canonical URL). Use RankPath's OG Checker to validate how your tags render on different platforms before publishing.
12. Missing Canonical Tag
What it is
The page has no <link rel="canonical" href="..."> tag in its <head>. The canonical tag is a self-referencing signal that tells Google "this URL is the preferred version of this page."
Why it matters
Even pages without obvious duplicate content variations benefit from a self-referencing canonical tag. It prevents URL parameter variants (from tracking codes, filtering, sorting) from accidentally creating duplicate pages in Google's index. It also reinforces your preferred URL in cases where other sites link to alternate versions of your URL. Think of it as a proactive defense against duplicate content issues rather than a reactive fix.
How to fix
Add a canonical tag to every page: <link rel="canonical" href="https://yourdomain.com/your-page-url">. The href should be the absolute URL of the preferred version of the page — typically the clean URL without tracking parameters. Most CMS SEO plugins (Yoast, RankMath) add canonical tags automatically if configured correctly.
13. Missing Language Attribute
What it is
The <html> element lacks a lang attribute (e.g., lang="en") that explicitly declares the page's language.
Why it matters
The lang attribute helps search engines serve your content to users searching in the correct language, improves accessibility for screen reader users (who depend on it to select the right voice profile), and is required for HTML validity. While Google can detect page language without this attribute, explicitly declaring it removes ambiguity — particularly important for pages that contain terms from multiple languages or for sites with multilingual audiences.
How to fix
Add lang="en" (or the appropriate BCP 47 language code) to your <html> element: <html lang="en">. For multilingual sites, use hreflang attributes to declare alternate language versions. This fix takes 30 seconds to implement and has no downsides.
Track All These Issues with RankPath
Instead of hunting for issues manually, let RankPath detect them automatically. Every crawl checks for all 13 issues above — plus dozens more — and tracks what's fixed and what's new.
Run Free Audit →Diagnostic Checklist
Use this checklist to systematically verify your site against the most common technical SEO issues. Check off each item as you confirm it's resolved. Progress is saved locally in your browser.
Technical SEO Issues Checklist
Critical — Fix First
Warnings — Fix Next
Info — Fix When Possible
How to Prioritize Your Fixes
Not all technical SEO issues warrant the same urgency, and most teams have limited capacity. Here's a practical approach to sequencing your work:
| Priority | Issue Type | Fix Timeline | Business Impact |
|---|---|---|---|
| 1 — Immediate | Missing title, missing H1, missing meta description | This sprint | Directly affects rankings and CTR for every affected page |
| 2 — High | Images missing alt text, title/description length issues | Within 2 weeks | Reduces keyword signals and accessibility compliance |
| 3 — Medium | Redirect chains, duplicate content, multiple H1s | Within 1 month | Wastes crawl budget, dilutes ranking signals |
| 4 — Normal | Missing canonical, missing OG tags, missing language | Next quarter | Limits enhanced features; lower direct ranking impact |
| 5 — Ongoing | Site structure, page depth | Continuous improvement | Long-term crawl efficiency and authority distribution |
The most important rule: fix high-severity issues on high-traffic, high-value pages first. A missing title tag on your homepage is worth fixing before a missing OG description on a low-traffic blog post. Use your analytics data to prioritize which pages to fix first when the same issue exists across many pages.
How RankPath helps
RankPath automatically groups issues by severity, tracks which issues are new vs. recurring, and monitors your fix progress over time. Every crawl produces an updated score so you can measure improvement concretely. Run a free audit to see your current issue list →
Frequently Asked Questions
Related Resources
- How to Do a Technical SEO Audit: Step-by-Step Guide (2026) — A comprehensive walkthrough of the full audit process, including tools and templates.
- Open Graph Tags: The Complete Guide — Everything you need to know about OG tags, with a free validator.
- Free OG Tag Checker — Validate your Open Graph tags and preview how your pages appear when shared.
- Free Technical SEO Audit — Run RankPath's automated audit on your site and get a full issue report in under two minutes.
- RankPath Starter — Automated monthly crawls with issue tracking and scoring history for sites that need continuous monitoring.