A technical SEO checklist reviews whether search engines can find, read and store your pages, and whether visitors can use them comfortably. If your key pages cannot be crawled or indexed, no amount of good content will help them rank.
The aim is not a perfect score on a tool. It is to remove the specific problems that stop important pages from performing. Here are the areas worth checking, what each one means, and the mistakes we see most often on business sites.
Crawling and indexing
Can Google crawl your important pages?
Crawling is how Google discovers your pages. Two things commonly go wrong. A robots.txt file may block sections that should be open, often left over from the development stage. Or pages may be hard to reach because nothing links to them.
Check that your robots.txt does not block pages you want found, and that your important pages are reachable through normal links. Remember that robots.txt controls crawling, not indexing, so it is not the right tool for hiding a page from results.
Are those pages actually indexed?
Being crawled is not the same as being stored in Google's index. The Pages report in Google Search Console tells you which URLs are indexed and, more importantly, why others are not. Reasons such as 'Crawled, currently not indexed' or 'Duplicate without user-selected canonical' deserve attention when they affect pages you care about.
Pay particular attention to pages marked noindex by mistake. This happens more than people expect after a redesign, when a setting used during development is carried into the live site. If your traffic has fallen after relaunching, it is one of the first things to rule out, as our piece on Google ranking drops explains.
Security, speed and mobile
Is the site secure and consistent?
Your site should load over HTTPS, and every version of your address should lead to one preferred version. Variations such as with and without www, or HTTP and HTTPS, should redirect to a single address. Mixed content, where a secure page loads insecure files, causes browser warnings that damage trust. Make sure your security certificate renews on time, since an expired one scares visitors off immediately.
Is the site fast and stable on mobile?
Google uses the mobile version of your site for indexing, and page experience is part of how it assesses pages. The Core Web Vitals measure loading speed, responsiveness and visual stability. Treat them as a way to find real problems, such as oversized images, heavy scripts, slow hosting, or layouts that jump as they load, rather than as a score to chase.
Test on a mid-range phone with ordinary mobile data. If it feels slow to you, it feels slow to your customers. We cover typical causes and fixes in our guide to website speed optimization.
Is the mobile experience equal to desktop?
Because indexing is mobile-first, content hidden or missing on the mobile version may not count. Check that mobile pages show the same main content, headings, links and structured data as desktop. Buttons should be easy to tap, text readable without zooming, and pop-ups should not cover the content.
Duplicates, redirects and sitemaps
Are there duplicate or near-duplicate pages?
The same content reachable at several addresses confuses search engines and splits signals. Typical sources include tracking parameters, filters and sorting on ecommerce stores, printer versions, tag and category archives, and copied location pages. Decide which version is the main one and use redirects, canonical tags or consolidation accordingly. Where different pages are competing for one intent, read our guide on keyword cannibalization.
Do redirects and errors behave properly?
- Moved or deleted pages that had traffic or links should redirect to the closest relevant page, not the homepage.
- Avoid chains where one redirect leads to another, and loops.
- Broken internal links should be fixed rather than redirected forever.
- Pages that genuinely no longer exist should return a proper error status, not a normal page that says 'not found'.
- Server errors should be rare and investigated.
Redirect mistakes are the most expensive technical errors during a redesign or move, because they can quietly throw away years of earned visibility.
Is the sitemap helpful and accurate?
An XML sitemap lists the pages you want indexed. It should include only live, indexable pages, with no redirected, blocked or error URLs. Submit it in Search Console and check it for errors. A sitemap helps discovery but does not force indexing.
Structure and markup
Is the site structure logical?
A clear hierarchy helps both visitors and crawlers. Important pages should be reachable within a few clicks of the homepage, URLs should be readable, and related pages should link to each other. Poor structure shows up as orphan pages and as service pages that are buried. Our internal linking strategy guide goes deeper, and the structure is easiest to get right when planning SEO friendly website design from the start.
Is structured data present and valid?
Structured data labels details such as your business name, address, products, reviews, articles and FAQs so search engines can read them clearly. It can make results richer but does not guarantee them. Mark up only what is visible on the page, keep it accurate, and validate it with Google's Rich Results Test. Wrong or misleading markup can lead to the enhancements being withheld.
Rendering and international versions
How is JavaScript handled?
Some modern sites build their content in the browser. Google can render JavaScript, but it adds delay and can fail when scripts are blocked or heavy. If important text, links or product details only appear after scripts run, test with Search Console's URL Inspection to see what Google actually sees. This matters most for sites built on custom frameworks and for single-page apps.
Are international and multi-language versions set up correctly?
If you serve audiences in India and abroad, such as the UAE, UK or Australia, make sure language and region versions are clearly separated and linked with the right hreflang annotations. Mistakes here cause the wrong version to appear in the wrong country.
How to prioritise
Not every issue deserves attention. A long audit report full of warnings can distract from the three or four issues that truly matter. Rank problems by the damage they do:
- Anything that stops important pages being crawled or indexed.
- Anything that sends visitors to errors or slow pages.
- Duplicates and redirect problems that dilute your pages.
- Cosmetic or minor warnings that tools flag but that do not affect results.
Re-check after any redesign, migration, plugin change or hosting move, and set up Search Console alerts. If your site is slow, outdated or hard to fix, it may be time to consider a website redesign instead of patching it endlessly.
One more habit worth building: ask your developer or agency to tell you before any change that touches URLs, templates, plugins or hosting. Most serious technical SEO damage is accidental, and it is far cheaper to prevent than to repair after traffic has already dropped.
How Insprio Media can help
Our technical SEO work focuses on the issues that actually hold pages back, explained in plain language with clear priorities. If you suspect something is wrong with your site's crawling, speed or indexing, get in touch and we will tell you honestly what needs fixing and what can wait.
