Technical SEO Audit Checklist: 15 Issues Silently Killing Your Rankings (+ Free Tool)

Why Technical SEO Quietly Costs You Rankings

Google can only rank pages it can crawl, understand, and trust. A single missing title tag, a broken internal link, or a duplicate meta description won’t crash your site — but multiplied across dozens of pages, these small issues add up to a search engine that quietly stops sending you traffic.

The frustrating part is that most of these issues are invisible to a normal site visit. You have to actually crawl the site — page by page, link by link — the way a search engine bot does, to find them.

1. Title Tags & Meta Descriptions

Your title tag is the single most important on-page SEO element. It’s the blue link Google shows in search results, and it’s one of the strongest signals Google uses to understand what a page is about.

• Missing titles — Google will generate its own, often picking something awkward or irrelevant.
• Titles under 10 characters — too vague to rank for anything specific.
• Titles over 60 characters — get truncated in search results with “…”.
• Duplicate titles across pages — confuses Google about which page to rank for a given query.

Meta descriptions don’t directly affect rankings, but they directly affect your click-through rate — a compelling description earns more clicks even at the same ranking position.

2. Heading Structure (H1s)

Every page should have exactly one H1 tag that clearly describes the page’s main topic. Two common mistakes we see constantly during audits:

3. Image Alt Text

Alt text serves two purposes: it lets screen readers describe images to visually impaired visitors, and it gives Google Images context to index your pictures. Missing alt text on product photos, blog banners, and infographics is one of the most common issues we find in audits — and one of the easiest to fix.

4. Broken Links

Broken internal links waste your “crawl budget” — the limited number of pages Google bothers to crawl on your site per visit. Broken external links (linking out to pages that no longer exist) signal to Google that your content isn’t well-maintained.

Sites that redesign, migrate, or delete old pages without setting up redirects almost always accumulate broken links over time — often without anyone noticing until traffic quietly drops.

5. URL Structure

Clean URLs help both users and search engines understand a page before they even click. A few rules we enforce on every site we audit:

• Use hyphens, not underscores — /blue-shoes/ not /blue_shoes/
• Keep it lowercase — mixed-case URLs can create accidental duplicate content
• Keep it short and descriptive — avoid long strings of parameters or IDs where possible
• Avoid unnecessary nesting — /shoes/running/blue/ is fine; five levels deep isn’t

6. Site-Wide Foundations

Beyond individual pages, three site-wide basics need to be in place for Google to crawl and index your site properly:

• robots.txt — tells search engines which parts of your site they can crawl
• sitemap.xml — gives search engines a map of every page you want indexed
• HTTPS — a confirmed ranking factor, and a trust signal for visitors

Missing any of these three doesn’t just risk a ranking penalty — it can mean entire sections of your site are invisible to Google.

Key Takeaways

• ✅ Title tags and meta descriptions are your first impression in search results — keep them unique and the right length
• ✅ One clear H1 per page helps Google understand what the page is really about
• ✅ Missing alt text is a quick, high-value fix for accessibility and image search
• ✅ Broken links waste crawl budget and erode trust — check them regularly
• ✅ Clean URLs and solid site-wide foundations (robots.txt, sitemap.xml, HTTPS) are non-negotiable