Core Web Vitals your whole team can trust
One source of truth for web performance
One place for LCP, INP, CLS history, mobile vs desktop, performance budgets, and scheduled PDF reports when you need to show progress without live-demoing PageSpeed.
Role-based access with Admin / Manager / Viewer, so contractors stay read-only and internals stay in control.
> Get a free domain check - no account needed.
Built for cross-functional teams
Roles, alerts, and reports that match how small teams ship
Roles without seat math
Invite marketing, SEO, and engineering. Default plans keep team members unlimited so you are not punished for inviting the right people. Read more
Alerts that match your cadence
Set performance budgets; get Slack or email digests when metrics slip, with cooldowns so a small team does not drown in noise. Read morePerformance budgetsAlerts & digests
Reports leadership reads
PDF exports with white-label options on Professional (monthly reviews, launch retros) without manual screenshots. Read more
Lab + field data
Stop debating whose PageSpeed tab is “right.”
Every test brings Lighthouse lab metrics and CrUX field data when traffic supports it, so SEO can speak to rankings and devs can speak to deploys using the same numbers. Compare mobile vs desktop side by side; trend history over months when retention allows.
- > Prioritised fix suggestions: no full-time performance engineer required.
- > Performance budgets: agree thresholds once; catch regressions after releases.
- > Multi-site without agency sprawl: organisation → site → page stays tidy.
Read more Core Web Vitals Mobile & desktop monitoring Multi-tenant workspaces & sites
No DIY stack
Monitoring that does not become a maintenance project.
No PSI API keys to rotate per property: Watcher manages the PageSpeed Insights relationship. Auto-discovery from sitemaps (with crawl fallback) means new landing pages show up without a ticket to “add these 40 URLs.”
- > Tests and sites in the table below: quotas stay predictable.
- > Daily / weekly / monthly on Professional: match your ship cadence.
- > Sits beside analytics and ticketing instead of replacing them.
Read more Automated page discovery API access & quota visibility Scheduled testing & priorities
Starter vs Professional
Professional adds Slack, PDFs, more sites, and longer retention. Starter when email-only and fewer sites are enough.
| Starter | Professional | |
|---|---|---|
| Price | $29 / month | $79 / month |
| Sites | Up to 5 | Up to 25 |
| Tests / month | 500 | 2,500 |
| Data retention | 30 days | 180 days |
| Scheduled frequencies | Weekly, monthly | Daily, weekly, monthly |
| Alert channels | Email, Slack | |
| PDF / white-label | Not included | Included |
Under five sites and email-only is enough? Starter keeps costs low. Need Slack, PDFs, and more history? Professional.
More use cases