Is this website health check really free?

Yes. No signup, no email gate, no credit card. You get the full results immediately. We offer it free because it demonstrates what Sitewatch monitors continuously on paid plans.

How is this different from Google Lighthouse or PageSpeed Insights?

Lighthouse focuses on performance scores and best practices. Sitewatch focuses on things that break silently after deploys: 404-ing assets, mixed content, expiring SSL, missing security headers, and invalid structured data. They complement each other — Lighthouse for performance, Sitewatch for integrity.

How long does the scan take?

Most scans complete in 10–25 seconds. We load your page, enumerate all subresources, check each one, validate schema and headers, and compile the findings into a prioritized report.

We only scan publicly accessible pages. We don't store your page content — just the findings. Results are available via a shareable link for 30 days, then automatically deleted.

How is this different from an uptime monitor?

Uptime monitors check if your server responds. Sitewatch checks if your site actually works — whether images load, scripts execute, schema is valid, and security headers are present. A site can be "up" but completely broken for visitors.

Free website health check · No signup

Free Website Health Check

Your uptime monitor says you're up — but is your site actually working? Run a free website health check to find broken assets and links, mixed content, missing security headers, expiring SSL, domain expiry, failing third-party dependencies, and an accidental robots.txt block — in 20 seconds.

How the scan works

1
Paste your URL
Enter any publicly accessible URL above. No signup or account needed.
2
We run the full check suite
Assets, links, SSL, domain expiry, security headers, third-party health, schema, SEO meta, robots.txt, mixed content, and silent-breakage checks — in about 20 seconds.
3
Get a prioritized report
Findings ranked by severity with plain-English explanations — what's broken, who sees it, and why it matters.

Proof, not a claim

This checkout returns 200 OK. It's also completely broken.

Your uptime monitor pings the server, gets a 200, and calls it healthy. Here's what it can't see.

What your uptime monitor sees

shop.example.comServer responded200·180ms

This is what your uptime monitor tells you. Everything below is what it misses.

What Sitewatch sees

1 critical issue

criticalbroken assets·mime-mismatch-script

Checkout script is served as HTML — the browser refuses to run it

For visitors Customers click “Pay now” and nothing happens. The button is dead because the script that powers it never executes.

Why it matters Every checkout silently fails while uptime stays green and no one gets paged. You lose the sale and never see an error.

What the health check covers

Broken assets

Images, scripts, and stylesheets that 404, 403, or fail to load.

Mixed content

HTTP resources loaded on HTTPS pages that browsers block and that break the lock icon.

SSL certificate

Validity, issuer, and days until expiry — catch a renewal before your site goes dark.

Security headers

CSP, HSTS, X-Frame-Options, Referrer-Policy — the headers enterprise audits look for.

Schema & SEO

Invalid JSON-LD, missing canonicals, Open Graph gaps that tank shares and rich results.

Discoverability

Robots.txt (including an accidental site-wide Disallow: /), sitemap.xml, and whether your site is actually indexable.

Domain expiry

How many days until the domain registration lapses — catch it before the site goes dark.

Broken links

Hyperlinks pointing at 404s and dead destinations that frustrate visitors and waste crawl budget.

Third-party dependencies

CDNs, font hosts, analytics, and widgets your page depends on — flagged when one is down.

Silent breakage

Redirect loops, MIME-type mismatches, and pages returning JSON or plain text when they should be HTML — silent breakage that makes a "working" site unusable.

How it compares

Sitewatch and Lighthouse solve different problems. Use both.

How Sitewatch, Lighthouse, and uptime tools compare on each check
Check	Sitewatch	Lighthouse	Uptime tools
Broken images & scripts	Yes	Partial	No
Mixed content	Yes	Yes	No
SSL certificate expiry	Yes	No	Some
Security headers (CSP, HSTS)	Yes	Partial	No
Schema / JSON-LD validation	Yes	No	No
Silent content failures	Yes	No	No
Performance scores (LCP, CLS)	Coming	Yes	No

Frequently asked questions

What does a free website health check include?: We check SSL, domain expiry, security headers, broken assets, broken links, mixed content, third-party dependency health, schema markup, SEO meta tags, robots.txt (including an accidental site-wide Disallow: /), and sitemap.xml. We also catch silent failures most tools miss: redirect loops, MIME-type mismatches, and pages returning JSON or plain text instead of HTML.
Is this website health check really free?: Yes. No signup, no email gate, no credit card. You get the full results immediately. We offer it free because it demonstrates what Sitewatch monitors continuously on paid plans.
How is this different from Google Lighthouse or PageSpeed Insights?: Lighthouse focuses on performance scores and best practices. Sitewatch focuses on things that break silently after deploys: 404-ing assets, mixed content, expiring SSL, missing security headers, and invalid structured data. They complement each other — Lighthouse for performance, Sitewatch for integrity.
How long does the scan take?: Most scans complete in 10–25 seconds. We load your page, enumerate all subresources, check each one, validate schema and headers, and compile the findings into a prioritized report.
Is my data safe?: We only scan publicly accessible pages. We don't store your page content — just the findings. Results are available via a shareable link for 30 days, then automatically deleted.
How is this different from an uptime monitor?: Uptime monitors check if your server responds. Sitewatch checks if your site actually works — whether images load, scripts execute, schema is valid, and security headers are present. A site can be "up" but completely broken for visitors.

Paste a URL. Find out in 60 seconds what your uptime tool has been missing.

Every asset fetched, every redirect followed, every header validated, every fingerprint checked. If something's broken, you'll see exactly what — and how to fix it.

Scan a site free See pricing

Free plan available. No credit card required.