Most businesses with SEO problems aren't struggling because their content isn't good enough or their backlink profile is too thin. They're struggling because of technical issues that silently prevent Google from crawling, indexing, and ranking their pages correctly. Technical SEO is the foundation everything else sits on — and the most impactful fixes are often faster to implement than you'd expect.
Here are 15 technical SEO fixes ranked by the combination of impact and implementation speed.
1. Fix your title tags
Title tags are still one of the strongest on-page ranking signals. Check that every page has a unique title tag, that it includes your primary keyword, and that it's between 50–60 characters. Missing, duplicate, or truncated titles are common and easy to fix.
2. Write meta descriptions for every page
Meta descriptions don't directly affect ranking, but they drive click-through rate — which does. Ensure every important page has a unique, compelling meta description of 140–155 characters that includes the target keyword and a clear value proposition.
3. Implement a canonical tag strategy
Duplicate content — the same or very similar content on multiple URLs — confuses Google about which page to rank. Implement canonical tags to indicate your preferred URL for each piece of content, and ensure your CMS isn't generating duplicate pages with URL parameters.
4. Set up and submit your XML sitemap
If your sitemap doesn't exist or isn't submitted to Google Search Console, Google is discovering your pages through crawling alone — which is slower and less complete. Generate a comprehensive XML sitemap, submit it in Search Console, and check it monthly for errors.
5. Fix crawl errors in Search Console
Google Search Console shows you exactly which pages are returning errors, blocked, or not indexed. Fix 404 errors by redirecting broken URLs, remove noindex tags from pages that should be indexed, and resolve any coverage errors. This is free, fast, and high-impact.
6. Improve Core Web Vitals
Core Web Vitals (LCP, CLS, FID/INP) are direct ranking factors. LCP measures loading speed, CLS measures visual stability, and INP measures responsiveness. Check your scores in Google Search Console's Core Web Vitals report and address the specific issues flagged.
7. Ensure mobile-first indexing readiness
Google uses the mobile version of your site for indexing. If your mobile experience is degraded — content hidden, images missing, different HTML structure — you're being indexed on an inferior version of your site. Test with Google's Mobile-Friendly Test and fix any issues.
8. Implement HTTPS correctly
HTTPS is a confirmed ranking signal, but implementation errors are common. Check for mixed content (HTTP assets on HTTPS pages), ensure HTTP URLs redirect to HTTPS, and verify your SSL certificate is valid and not expiring.
9. Fix broken internal links
Broken internal links waste crawl budget and create dead ends for both users and bots. Crawl your site with Screaming Frog or a similar tool to identify all 404s, then redirect or update the links.
10. Optimise your robots.txt
A misconfigured robots.txt can accidentally block Google from crawling important sections of your site. Review your robots.txt carefully and ensure you're not blocking any pages you want indexed. This is a surprisingly common issue, especially on sites that have been migrated or redesigned.
11. Use structured heading hierarchy
Each page should have exactly one H1 tag (your primary topic), followed by H2s for main sections and H3s for subsections. A clear heading hierarchy helps both Google and AI engines understand your content structure.
12. Add alt text to all images
Alt text is read by both search engines (for image search) and screen readers (for accessibility). Ensure every meaningful image has descriptive alt text that includes relevant keywords where natural. Don't keyword-stuff alt text — describe the image accurately.
13. Optimise internal linking
Internal links pass authority between pages and help Google understand your site structure. Ensure your most important pages have internal links from multiple other pages. Use descriptive anchor text that includes relevant keywords. A silo structure — related pages linking to each other in clusters — is particularly effective.
14. Compress and serve next-gen images
Image size is one of the most common causes of poor Core Web Vitals scores. Convert images to WebP format, compress them without visible quality loss, and implement lazy loading for images below the fold. This alone can dramatically improve LCP scores.
15. Fix redirect chains
When one redirect points to another redirect (a redirect chain), link equity is lost and crawl speed slows. Identify chains with a crawl tool and update them to point directly to the final destination URL.
Start with numbers 1–5. They're the fastest to implement and typically produce the most immediate improvements in crawlability and ranking.