---
title: "What is Lemwatch Pulse? — Lemwatch Help"
description: "Pulse is a free public health scanner — anyone can drop in a URL and get a graded uptime, performance, security, and SEO snapshot in seconds."
canonical: "https://lemwatch.com/help/pulse-overview"
source: "https://lemwatch.com"
---

# What is Lemwatch Pulse?

> Pulse is a free public health scanner — anyone can drop in a URL and get a graded uptime, performance, security, and SEO snapshot in seconds.

## Quick answer

 Pulse is a no-signup site health check. Enter a URL, get an A–F grade across uptime, performance, security headers, and SEO fundamentals in about 20 seconds.

## What it checks

- Uptime probe + response time from one region

- Core Web Vitals proxy (TTFB, HTML size)

- Security headers (HSTS, CSP, X-Frame, cookies)

- SEO fundamentals (title, meta, canonical, robots)

- SSL grade and expiry

## Where to find it in Lemwatch

 **/pulse** — public, no login required.

## How to use it

- Go to /pulse and paste a URL.

- Wait ~20 seconds for the scan.

- Review the graded snapshot.

- Claim the site to keep monitoring it — see claim & share .

## FAQ

### Is Pulse really free?

 Yes. Rate-limited to prevent abuse.

### Can I scan sites I don't own?

 Yes — Pulse only fetches public URLs.

## Related

- Pulse scan anatomy

- Claim a Pulse scan

- Pulse review queue and privacy


## Related

- [Help centre](https://lemwatch.com/help)
- [How to read your Pulse scan report](https://lemwatch.com/help/pulse-scan-anatomy)
- [How to claim and share a Pulse scan](https://lemwatch.com/help/pulse-claim-and-share)
- [Pulse review queue, PII, and expected-behavior whitelist](https://lemwatch.com/help/pulse-review-queue-privacy)
- [Lemwatch pricing](https://lemwatch.com/pricing)