How to Perform a Complete Website Health Check: 10 Things to Look For

A website can look attractive and still have serious technical problems affecting its speed, security, search visibility, and user experience. A regular website health check helps identify these issues before they turn into lost traffic, poor rankings, or frustrated visitors.

Whether you run a business website, blog, portfolio, or online store, reviewing your website’s technical and SEO health should be part of your regular maintenance routine. Current technical SEO checklists emphasize crawlability, indexing, performance, mobile usability, security, links, and structured data as key areas to review.

Here are 10 important things to check.

1. Check Website Speed and Performance

Page speed has a direct impact on user experience. Visitors are less likely to stay on a website that takes too long to load, particularly on mobile devices.

Use tools such as Google PageSpeed Insights or Lighthouse to evaluate your site’s performance. Pay particular attention to Core Web Vitals, including:

• Largest Contentful Paint (LCP): Measures loading performance.
• Interaction to Next Paint (INP): Measures how quickly the page responds to user interactions.
• Cumulative Layout Shift (CLS): Measures visual stability.

Google’s commonly used “good” thresholds are LCP of 2.5 seconds or less, INP below 200 milliseconds, and CLS below 0.1.

Compress large images, remove unnecessary scripts, enable caching, and consider using modern image formats such as WebP or AVIF.

2. Verify Mobile Responsiveness

A website should work properly across smartphones, tablets, laptops, and desktop computers.

Open your website on several screen sizes and look for:

• Text that is difficult to read
• Buttons that are too small
• Horizontal scrolling
• Images extending beyond the screen
• Menus that do not work correctly
• Overlapping elements
• Slow mobile loading

Google primarily uses the mobile version of a site’s content for indexing, making mobile usability an important part of website health.

3. Review Crawlability and Indexing

Search engines need to discover and access your important pages before they can potentially appear in search results.

Start by checking your robots.txt file. Make sure important pages, CSS, JavaScript, and other resources are not accidentally blocked. Also review your XML sitemap and make sure it contains relevant, canonical URLs that return successful responses.

You should also check Google Search Console for indexing problems. Look for important pages marked as excluded, especially if they should be appearing in search results.

Pay special attention to accidental noindex directives, which can prevent pages from being indexed.

4. Find Broken Links and Redirect Problems

Broken links can create a poor experience for visitors and make it harder for search engines to navigate your site.

Run a crawl and look for:

• 404 errors
• Broken internal links
• Broken external links
• Redirect loops
• Long redirect chains
• Links pointing to outdated URLs

Whenever possible, update internal links so they point directly to the correct destination. If a page has permanently moved, use an appropriate 301 redirect rather than sending visitors through multiple redirects.

5. Check HTTPS and Website Security

Security is another essential part of a website health check.

Confirm that every important page loads through HTTPS and that your SSL certificate is valid. Also check for mixed-content warnings, where an HTTPS page attempts to load resources through an unsecured HTTP connection.

Test both versions of your domain and make sure HTTP traffic redirects properly to your preferred HTTPS version.

For additional protection, review your CMS, themes, plugins, extensions, and server software regularly and keep them updated.

6. Review Titles, Meta Descriptions, and Headings

On-page elements should clearly communicate what each page is about.

Review your:

• Title tags
• Meta descriptions
• H1 headings
• H2 and H3 subheadings
• Image alt text
• URL structures

Each important page should have a descriptive, relevant title and a logical heading structure. Avoid duplicate titles across large numbers of pages.

Meta descriptions do not guarantee higher rankings, but well-written descriptions can help users understand the page and encourage clicks from search results.

7. Examine Internal Linking and Site Structure

A healthy website should have a logical structure that makes it easy for both visitors and search engines to navigate.

Check whether important pages can be reached through relevant internal links. Look for orphan pages that have no internal links pointing toward them.

Your navigation should make sense, while important content should not be buried several levels deep. A well-planned internal linking structure can also help distribute authority throughout the website.

Use descriptive anchor text instead of generic phrases such as “click here.”

8. Check Images and Media

Large or poorly optimized images can significantly slow down a website.

During your audit, check whether:

• Images are appropriately compressed
• Modern formats such as WebP or AVIF are being used where appropriate
• Images have descriptive filenames
• Important images include useful alt text
• Images are properly sized for their display dimensions
• Non-critical images are lazy-loaded

Avoid uploading a huge image when a much smaller version would provide the same visual quality.

Image optimization can improve loading performance while also making content more accessible.

9. Review Structured Data and Canonical Tags

Structured data helps search engines better understand the information presented on a page. Depending on the website, you may use appropriate schema for products, articles, organizations, events, local businesses, recipes, or other content types.

Check that your structured data:

• Uses the correct format
• Contains accurate information
• Matches the visible page content
• Does not contain unnecessary or misleading markup
• Passes available validation tests

You should also review canonical tags. Canonical URLs help search engines understand which version of a page should be treated as the preferred URL, particularly when similar or duplicate URLs exist.

10. Monitor Website Uptime, Errors, and Overall Health

A website health check should not end after fixing SEO problems. You also need to monitor the website regularly.

Check for:

• Server downtime
• Sudden traffic drops
• Server errors
• Database problems
• Broken forms
• Failed checkout processes
• Contact form issues
• Unexpected changes after updates
• Security warnings

For websites built on content management systems, perform regular backups before making significant updates. Test important functions after updating plugins, themes, or other software.

If you use a hosting provider such as Bluehost, review the hosting environment and available performance, security, backup, and monitoring features as part of your overall maintenance process.

Create a Website Health Check Routine

A website audit is most useful when it becomes a routine rather than a one-time task. A basic technical review can be performed monthly, while a more comprehensive audit can be scheduled every few months or after major changes such as a redesign, migration, domain change, or platform update.

Create a simple checklist and record issues according to priority:

High priority: Security vulnerabilities, indexing blocks, major downtime, broken checkout or lead-generation forms.

Medium priority: Broken links, slow pages, redirect issues, duplicate metadata, and mobile usability problems.

Low priority: Minor image optimization, small accessibility improvements, or cosmetic issues.

Final Thoughts

A complete website health check looks beyond appearance. It examines how efficiently your website loads, how easily search engines can crawl it, whether important pages are indexed, how well it works on mobile devices, and whether visitors can navigate it without encountering problems.

By regularly checking these 10 areas, you can identify technical issues early, improve the user experience, strengthen your SEO foundation, and keep your website performing reliably over time.