I used to think technical SEO was only for developers.
The phrase itself sounds intimidating. Technical. Audit. Checklist. It sounds like something that requires a computer science degree, an expensive agency, and a monthly budget most small website owners simply do not have.
Then I started running technical SEO audits on my own websites using free tools — and I discovered something that changed how I think about this entire topic. Technical SEO is not complicated. It is a checklist. A specific list of things to check, fix, and maintain. Once you know what is on the list and how to check each item, the whole process takes less than an hour and costs nothing.
This is the exact checklist I follow every month on all my websites. It covers every major technical SEO factor that affects how Google finds, reads, and ranks your pages in 2026. Work through it from top to bottom and you will know exactly where your website stands — and exactly what needs fixing.
Before You Start — Run Your Free Audit
Before going through this checklist manually, save yourself time by running an automated audit first.
Go to Rankests — rankests.com — enter your website address and run the free technical SEO audit. The tool checks your website against dozens of technical factors simultaneously and returns a clear report identifying every issue it finds.
Use the Rankests report as your starting point. It will flag the most critical issues immediately so you know where to focus first. Then use this checklist to go deeper on each area.
Section One — Crawlability
Crawlability is the foundation of all technical SEO. If Google cannot crawl your pages, nothing else on this checklist matters.
Check your robots.txt file. Open your robots.txt file by typing your domain followed by /robots.txt in your browser. Make sure you have not accidentally added lines that block Google from crawling your important pages. A single misplaced line in this file can make your entire website invisible to Google. Confirm that only pages you genuinely do not want indexed — admin pages, duplicate content, login pages — are listed under Disallow.
Read related article: How to Write the Perfect Robots.txt File for Google Search Bots
Check for noindex tags on important pages. A noindex tag tells Google not to include a page in its search index. It is useful when used intentionally but disastrous when added by mistake. Go through your most important pages and confirm none of them have an accidental noindex tag. In WordPress, check your SEO plugin settings for each page and make sure the indexing option is set to index, not noindex.
Submit your XML sitemap. Your XML sitemap is a file that lists every important page on your website and tells Google where to find them. Find your sitemap URL — usually at yourdomain.com/sitemap.xml — and confirm it is submitted in Google Search Console under the Sitemaps section. If it is not submitted, do it now. This single step can significantly speed up how quickly Google discovers and indexes your content.
Check for orphan pages. An orphan page is a page on your website that has no internal links pointing to it. Google discovers pages by following links. If a page has no links pointing to it, Google may never find it at all. Go through your website and make sure every important page has at least one internal link from another page pointing to it.
Section Two — Indexability
Indexability is about whether Google can not only reach your pages but also include them properly in its search index.
Check Google Search Console for coverage errors. Log into Google Search Console and go to the Coverage or Pages report. This shows you which of your pages are indexed, which are excluded, and why. Look specifically for pages marked as Crawled but not indexed or Discovered but not indexed — these are pages Google has found but decided not to include in search results. Understanding why helps you fix the underlying issue.
Check for duplicate content. Duplicate content happens when the same or very similar content appears on multiple URLs. This confuses Google about which version to index and rank. Common causes include www and non-www versions of your site both being accessible, HTTP and HTTPS versions both loading, and URL parameters creating multiple versions of the same page. Use canonical tags to tell Google which version of each page is the definitive one.
Check more article:
Check your canonical tags. Every important page should have a canonical tag in its header pointing to its own URL. This prevents duplicate content issues and tells Google clearly which version of a page to rank. Most SEO plugins add canonical tags automatically — verify yours are set up correctly.
Section Three — Site Speed
Page speed is both a direct ranking factor and a Core Web Vitals component. Slow pages rank lower and lose more visitors.
Check your overall page load time. Use the Page Speed Checker on Rankests — rankests.com — to check your current load time. Aim for under three seconds. If you are over that, identify the specific causes from the report and fix them in order of impact.
Check your Core Web Vitals scores. Core Web Vitals are Google's specific speed and user experience measurements — Largest Content Paint, Interaction to Next Paint, and Cumulative Layout Shift. Check your scores in Google Search Console under the Core Web Vitals report. Fix any pages showing poor or needs improvement ratings.
Check your image sizes. Large uncompressed images are the most common cause of slow page speeds. Every image on your website should be compressed before uploading. Use TinyPNG or Squoosh for compression. Use Web format where possible for smaller file sizes at the same visual quality.
Check for render-blocking resources. Render-blocking JavaScript and CSS files delay your page from displaying content to visitors. Your Rankests audit report will flag these specifically. Defer or async load JavaScript files that are not needed for the initial page display.
Section Four — Mobile Usability
Google uses mobile-first indexing, meaning it evaluates the mobile version of your website for ranking purposes. Mobile usability is not optional.
Check your mobile usability report. Go to Google Search Console and open the Mobile Usability report. It shows every page on your website that has mobile usability problems and describes exactly what the problem is — text too small, clickable elements too close, content wider than screen.
Check your viewport meta tag. Every page on your website should have a viewport meta tag in the header that tells mobile browsers how to scale the page correctly. Without it, mobile browsers display your page as a shrunken desktop version. Most modern themes and templates include this automatically — confirm yours does.
Test your pages on a real phone. Automated tools catch most mobile issues but not all of them. Open your most important pages on your own smartphone and navigate through them as a visitor would. Tap every button. Read every paragraph. Try the menu. Note anything that feels awkward or difficult and fix it.
Section Five — HTTPS and Security
Security signals affect both visitor trust and search rankings. Google gives a ranking advantage to secure websites.
Confirm your SSL certificate is active. Check that your website loads on HTTPS and shows a padlock icon in the browser address bar. Use the SSL Checker on Rankests — rankests.com — to confirm your certificate is valid and not close to expiry. SSL certificates typically expire every 12 months — check the expiry date and set a reminder to renew before it lapses.
Fix any mixed content warnings. Mixed content happens when your website loads over HTTPS but some elements — images, scripts, stylesheets — still load over HTTP. This triggers security warnings in browsers. Find and update any remaining HTTP references in your content and theme files to HTTPS.
Check your blacklist status. A blacklisted website loses search visibility immediately. Run your domain through the Blacklist Lookup tool on Rankests — rankests.com — to confirm your website is not flagged on any security databases. Do this monthly as part of your routine audit.
Section Six — On-Page Technical Elements
These are the technical elements on individual pages that affect how Google reads and ranks your content.
Check every page has a unique title tag. Every page on your website should have its own unique title tag of 50 to 60 characters that includes the main keyword for that page. Duplicate title tags confuse Google about which page to rank for a given keyword. Use your Rankests audit to identify any missing or duplicate title tags.
Check every page has a meta description. Every page should have a unique meta description of 150 to 160 characters. Missing meta descriptions mean Google writes one for you — usually poorly. Duplicate meta descriptions are a wasted opportunity to attract clicks from each page's specific audience.
Read more: Step-by-Step Guide to Optimizing Your Meta Tags
Check your heading structure. Every page should have one H1 heading — the main title — and use H2 and H3 subheadings to organize content below it. Multiple H1 tags on one page send conflicting signals to Google about what the page is primarily about.
Check all images have alt text. Every image on your website should have descriptive alt text. Alt text helps Google understand your images, improves accessibility for visitors using screen readers, and helps your images appear in Google Image Search.
Section Seven — Internal Linking and Site Structure
A clean internal linking structure helps Google understand your website's hierarchy and distributes authority efficiently across your pages.
Check for broken internal links. Run the Broken Link Finder on Rankests — rankests.com — to identify every broken link on your website. Each broken link is a dead end for both visitors and Google's crawlers. Fix them all.
Check your internal linking depth. Important pages should be reachable from your homepage within three clicks. Pages buried deeper than three clicks receive less crawl attention from Google and less authority from your homepage. Review your site structure and add internal links to surface important pages that are currently too deep.
Check your navigation menu. Your main navigation menu should link to your most important pages clearly and logically. A confusing or cluttered navigation hurts both user experience and crawlability. Keep it simple, clear, and focused on your most valuable pages.
Section Eight — Schema Markup
Schema markup gives Google structured information about your website and content that can improve how your pages appear in search results.
Check your homepage schema. Your homepage should have Website and Organization schema markup that tells Google your site name, organization details, and logo. Most SEO plugins add this automatically — verify yours is in place and working correctly using Google's Rich Results Test tool.
Check your article schema. If your website has a blog, each article should have Article schema markup that identifies the title, author, publication date, and content type. This helps Google display your articles correctly in search results and can qualify them for rich result features.
How Often Should You Run This Checklist?
I run through this full checklist once a month on all my websites. It takes less than an hour when you know what you are looking for and have the right tools available.
The most important tools — the Website Audit, Page Speed Checker, Broken Link Finder, SSL Checker, and Blacklist Lookup — are all available free at rankests.com. Start with the automated audit to identify the biggest issues quickly, then use this checklist to go deeper on each area.
Monthly audits catch problems early — before they grow into serious ranking or traffic issues. A website that is checked and maintained regularly performs consistently better than one that is only looked at when something goes wrong.
The Key Points
Technical SEO is not intimidating once you have a clear checklist to follow. It is a set of specific items to check, fix, and maintain — and most of the fixes are simpler than they sound.
Work through this checklist from top to bottom. Fix every issue you find. Run your free audit at rankests.com to check your progress after each round of fixes.
A technically healthy website gives Google everything it needs to crawl, index, and rank your content effectively. Everything else you do for your SEO — your content, your keywords, your backlinks — works better on a solid technical foundation.
Start your free technical SEO audit right now at rankests.com and find out exactly where your website stands today.
About the Author
Kester Terna is an SEO specialist and founder of Rankests, where he helps website owners identify technical SEO issues, improve search visibility, and grow organic traffic.