What does Lemwatch monitor?

Lemwatch runs 20+ automated checks per site: uptime, response time, SSL/TLS expiry, domain expiry, DNS changes, sitemap health, broken links, content changes, SEO audits, mobile usability, security headers, and more.

Yes. The free tier monitors up to 5 sites. Pro is $19/month for 50 sites and Agency is $59/month for 100 sites, both with full feature access.

How is Lemwatch different from UptimeRobot or Pingdom?

Lemwatch bundles uptime, change detection, SEO audits, security scans, and a public API in one platform — features competitors charge separately for. It also includes team workspaces, white-labelled status pages, and a webhook system out of the box.

Does Lemwatch send alerts?

Yes. Lemwatch supports email, browser push, webhooks, and per-site notification routing so the right person hears about the right incident.

Is there a public API?

Yes. Pro and Agency plans get a public REST API with webhooks for sites, checks, incidents, and reports.

Canonical tag check

Crawls your top pages and flags missing, self-referential loops, cross-domain, or conflicting canonical tags — the top-3 SEO indexation bug.

Quick answer

On every SEO crawl we extract <link rel="canonical"> and Link: rel=canonical headers, then check for missing, mismatched, or cross-domain values.

What it checks

Every crawled page has a canonical
Canonical resolves to a 200 (not 3xx / 4xx)
No cross-domain canonicals unless intentional
HTTP header and HTML tag agree

Where to find it in Lemwatch

Site details → SEO → Canonicals.

How to fix

Add a self-referential canonical on every indexable page.
On paginated pages, point canonical to page 1 only if content is duplicated.
Kill conflicting canonicals in HTTP headers if you also set the HTML tag.
Re-crawl.

FAQ

Do canonicals block indexing?

No — they consolidate signals. Use noindex to block.

Do CMSes get this right?

WordPress + Yoast: yes. Shopify: often needs manual overrides on collection pages.

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