Testing Tools

Website Health Check: 10-Minute Diagnosis for What Is Actually Broken

HelpMeTest

HelpMeTest

— 6 min read
Website Health Check: 10-Minute Diagnosis for What Is Actually Broken

Most website health check tools give you an SEO score, a speed grade, and a list of missing meta tags. That tells you how your site looks to search engines. It says nothing about whether your users can actually use it. A real health check verifies that forms submit, flows complete, login works, and checkout processes — the things that actually matter to your business.

Key Takeaways

A 95/100 Lighthouse score and a broken checkout can coexist. Performance scores and functionality are orthogonal. You need both — but most health check tools only give you one.

Functional health means every critical user flow completes successfully. Not "the page loads" but "the user can accomplish their goal."

The 10-minute health check is a habit, not a one-time audit. Run it after every significant deploy. Find regressions before users find them.

Automated health monitoring turns the 10-minute check into continuous coverage. Schedule it to run every 5 minutes and you never need to remember to check.

Start with the flows that cost you money when they break. Checkout, signup, login, contact form — these are the health indicators that matter for your business.

A website health check that gives you an SEO score is telling you how your site looks to Google. A website health check that gives you a speed grade is telling you how quickly your site loads. Both of these are useful inputs.

Neither tells you whether your site is healthy in the way that matters most: whether users can actually accomplish what they come to your site to do.

This guide covers a health check framework that evaluates actual site functionality — the layer of site health that SEO tools and speed tests systematically ignore.

What a Complete Website Health Check Covers

A thorough website health check has four dimensions. Most tools only cover two of them.

Dimension 1: Technical health (most tools cover this)

  • Page speed and Core Web Vitals
  • HTTP status codes across key pages
  • SSL certificate validity
  • Mobile responsiveness (viewport, font sizes, tap targets)
  • Structured data and schema markup
  • Crawlability and indexation

Tools: Screaming Frog, Sitebulb, Google Search Console, GTmetrix

Dimension 2: SEO health (most tools cover this)

  • Meta titles and descriptions
  • Heading hierarchy
  • Keyword targeting
  • Internal link structure
  • Duplicate content
  • Canonical tags

Tools: Ahrefs Site Audit, SEMrush Site Audit, Moz Pro

Dimension 3: Availability health (most teams cover this)

  • Server uptime
  • DNS resolution
  • Response time
  • SSL expiry

Tools: UptimeRobot, Better Uptime, Pingdom

Dimension 4: Functional health (most teams do not cover this)

  • Forms actually submit and process correctly
  • User flows complete end-to-end
  • Authentication works (login, session management)
  • Dynamic content loads and is interactive
  • Mobile flows work on actual mobile viewports
  • Third-party integrations (payment, email) are functional

Tools: HelpMeTest, Playwright, Cypress

Functional health is the gap. It is the dimension most directly connected to whether your site is earning revenue and serving users — and the dimension most commonly unmonitored.

The 10-Minute Manual Health Check

This is a structured walkthrough you can do in 10 minutes. Do it after every significant deploy.

Step 1: Open in incognito (1 minute)

Open your site in a private/incognito window with no saved sessions or cached data. This simulates a new visitor.

Check:

  • Homepage loads without errors
  • JavaScript console shows no red errors (F12 → Console)
  • Core content is visible without requiring any interaction

Step 2: Test your primary conversion flow (3-4 minutes)

Walk through the most important thing users do on your site. For an e-commerce store, that is the purchase flow. For a SaaS, that is signup and first login.

Go through every step:

  • Each button works
  • Each form accepts input
  • Each step advances to the next step
  • The final step completes and produces the expected outcome

If anything does not work, stop — you have found a critical issue.

Step 3: Test your secondary flows (2-3 minutes)

These are the other things users need to do on your site:

  • Contact form submits and confirms
  • Search returns relevant results
  • Login works with test credentials
  • Navigation links go to correct destinations

Step 4: Test on mobile (2 minutes)

Open DevTools (F12) → click the responsive design mode icon → select a mobile device preset (iPhone 12 or similar).

Repeat steps 2-3 on the mobile view. Common mobile-specific failures:

  • "Add to Cart" button hidden by CSS
  • Modal dialogs extend off-screen
  • Sticky headers cover content
  • Touch targets too small to tap
  • Mobile navigation does not open or close

Step 5: Check the error console (1 minute)

With the site open, look at the browser console (F12 → Console). Any red errors are problems. Common errors that indicate functional failures:

  • TypeError: Cannot read property '...' of undefined
  • Failed to fetch (API endpoint errors)
  • 404 Not Found (missing resources)
  • SyntaxError (JavaScript parse failures)

The Automated Health Check Setup

The manual 10-minute check works but relies on you remembering to do it. Automated health checks run continuously and alert you immediately when something breaks.

Setting up automated functional health checks

In HelpMeTest, describe your health check flows in plain English:

Homepage health:

Check homepage health for example.com:
- Page loads without errors
- Main navigation has links that work  
- Hero section is visible
- Call-to-action button is clickable

Checkout health:

Check checkout health for example.com:
- Visit a product page
- Add item to cart
- Cart updates with item count
- Checkout page loads with payment form

Contact form health:

Check contact form health for example.com/contact:
- Form loads with required fields (name, email, message)
- Form accepts valid input
- Submit button works
- Success confirmation appears after submission

Each check runs every 5 minutes. Any failure triggers an immediate alert.

Reading a Functional Health Report

A good functional health report tells you not just whether something is broken, but where in the flow it broke and what to do about it.

Green result (healthy):

Checkout flow: PASS
- Step 1: Navigate to product page ✓
- Step 2: Click Add to Cart ✓ 
- Step 3: Verify cart updated ✓
- Step 4: Click Checkout ✓
- Step 5: Verify checkout form loaded ✓
Duration: 8.3 seconds
Last run: 2 minutes ago

Red result (broken):

Checkout flow: FAIL
- Step 1: Navigate to product page ✓
- Step 2: Click Add to Cart ✓
- Step 3: Verify cart updated ✗
  Expected: cart count = 1
  Got: cart count = 0
  Error: "Cart update API returned 500"
Screenshot attached.

The failure report tells you exactly where the flow broke (step 3), what happened (cart API returned 500), and includes a screenshot of the browser at that moment. This is enough to diagnose and fix the issue without additional investigation.

Site Health Check Checklist

Use this checklist as a quick reference for what to verify.

Critical (check after every deploy)

  • Homepage loads without JavaScript errors
  • Primary conversion flow completes (purchase, signup, or contact)
  • Login works with valid credentials
  • Main navigation links work
  • Mobile version loads and primary flow is accessible

Important (check weekly)

  • Search returns relevant results
  • All secondary forms submit correctly
  • 404 page displays custom error (not blank page)
  • No broken images on key pages
  • Page load time is under 3 seconds on mobile

Periodic (check monthly)

  • SSL certificate expiry date (should be 60+ days out)
  • All external links still point to live pages
  • Structured data validates in Google's Rich Results Test
  • Core Web Vitals scores are in "Good" range
  • Sitemap is up to date

Health Scores vs. Health Reality

A word on the scores that health check tools generate.

Google Lighthouse gives you scores from 0-100 for Performance, Accessibility, Best Practices, and SEO. These scores are useful — but they measure specific technical criteria, not whether your site works.

A score of 95 on Performance means your site loads quickly. It does not mean checkout works.

A score of 100 on SEO means your meta tags are correctly structured. It does not mean your contact form submits.

The score is a proxy metric. The real metric is: can users do what they come to your site to do?

When to Run a Health Check

After every production deploy: A deploy is the highest-risk moment for introducing regressions. Run your critical flow checklist immediately after any deploy.

When traffic drops unexpectedly: A significant traffic drop can indicate a Google penalty, indexation issue, or functional problem that is causing users to leave immediately.

When conversion rate drops: If fewer users are completing purchases or signups, a functional failure may be the cause — not a marketing problem.

After third-party service updates: Payment processors, email services, and analytics tools update their APIs and SDKs. These updates can silently break your integrations.

On a weekly schedule: Even without deploys, external factors can break your site — CDN issues, third-party outages, database connection limits. A weekly manual check catches drift before it becomes a crisis.

Getting Continuous Health Monitoring

The 10-minute manual check is good. Automated monitoring is better. The combination is best.

HelpMeTest runs your functional health checks automatically:

  • Every 5 minutes for critical flows (checkout, login)
  • Every 15 minutes for secondary flows (contact form, search)
  • Alerts via Slack or email the moment any flow fails

Setup takes less than 30 minutes for a complete functional health monitoring stack.

Free plan: 10 tests, unlimited runs. More than enough to cover all critical flows for most sites.

Start at helpmetest.com.

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