Delight your users

User's stay longer and purchase more from fast websites and stores. Boosting your PageSpeed makes users happy and increases your revenue.
Less developer time

Point your developer team right at the problem with our reports and reduce engineering time from hours to minutes.
Fix problems fast

Get notified of performance problems before Google notices or rankings are impacted.

Third-Parties

Identify slow third parties

Find the vendors, marketing pixels, and other cruft that's slowing down your website and irritating your users.

Automatic noise filter

Remove the noise from third-parties injected by crawlers and browser extension automatically, and focus on things you control.
Biggest and slowest

Highlight the biggest and slowest vendors on every page viewed and zoom to all the resources they're pushing into your site.
Vendor assets and caching

Find ways to boost the speed of your vendor assets with caching and protocol breakdowns.

Request Metrics helped me quickly identify and resolve a crippling performance issue.

David Walsh

Owner, David Walsh Blog

Custom Marks

Track custom marks and measures

Dive into detailed performance information with your own custom performance marks and measures, captured automatically from the performance API.

Mark distribution

See when your marks start and finish in the waterfall sequence.
Measure durations

Understand how your performance marks behave across thousands of visitors and pages.
Marks and measure waterfall

See your custom marks and measures inline with resources, events, and other important metrics in the load sequence.

Request Metrics showed us all the unused marketing pixels and vendor rubbish that was slowing down our users.

Anton Ball

Full Stack Team Lead, Doist

Dependencies

Visualize all of your website dependencies, resource, and third-party scripts as individual or aggregated loading waterfalls.

Aggregate page timings

Discover the slowest part of your website loading process.
Dive into each resource

Understand exactly what is making each asset slow.
Highlight blocking and big

Flag the biggest and blocking resources that impact performance the most.