| Key features | - Lighthouse audits from desktop and mobile with side-by-side scoring
- Uptime monitoring with 99.999% SLA
- Core Web Vitals tracking including LCP, CLS, FCP, INP
- Deploy regression detection comparing before and after release metrics
- Multi-region monitoring from 12 regions across every major continent
- Per-region response time analysis with P90, P95, P99 percentiles
- Frontend error tracking grouped by release and browser
- SSL and domain expiry monitoring with 30-day advance warning
- Flexible alerting rules combining status code, response time, body content and SSL expiry
- Multi-channel alerts via email, Slack, Discord, Telegram and webhooks
| - Visual webpage diffs with side-by-side and inline HTML comparisons
- OpenAPI and Swagger specification monitoring with semantic diffs
- AI-powered change filters to reduce false positives
- Multi-region page checks from US, EU, Middle East, or Africa
- Slack, email, Telegram, and webhook alerts
- Configurable check schedules from minutes to daily
- CSS selector and region-based scoping for precise monitoring
- Email digest options combining multiple monitors into one message
- Anti-bot browser sessions for captcha-protected pages
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| What makes it different | - Automatically surfaces regressions within minutes of deployment rather than discovering them through support tickets
- Breaks down page weight by transfer size to show exactly which images are slowing load times
- Automatically surfaces noisy details like console errors and unhealthy JS libraries
- Checks from multiple regions so you catch outages before users do
- First alert in under 60 seconds from monitor creation
| - Monitors HTML and OpenAPI specs with readable diffs, not just screenshots
- Email digests roll all monitor changes into a single message
- AI filters scope alerts to specific sections and ignore noise
- Multi-region checks capture localized pricing and geo-locked content
- Semantic OpenAPI diffs report breaking changes and deprecations
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PulseCare
PingChange