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Faster site. Happier users.

See how people experience the speed of your website, then identify and fix performance issues. Businesses of all sizes trust us to monitor and improve their web performance.

30-day free trial • easy setup • No credit card required

SpeedCurve Users
SpeedCurve Vitals
SpeedCurve Responsive
SpeedCurve Budgets
SpeedCurve RUM Compare
Skater Skater
Comprehensive performance monitoring
Stand in your customer’s shoes. Understand their experience.
Access your Synthetic and Real User Monitoring data in the same set of dashboards. This lets you quickly spot and fix real-world issues.
Happy Users
24.7
Okay Users
21.1
Unhappy Users
54.2
World Map
Melbourne, Australia
43 seconds ago
User Happiness
Okay
AU
San Francisco, USA
5 seconds ago
User Happiness
Happy
US
Real User Monitoring
Learn how real users experience your site in the field. See the impact of web performance on your business metrics.
Explore RUM
Synthetic Monitoring
Test your pages in the lab to measure the impact of code changes. Get detailed waterfalls, diagnostics, and optimization recommendations.
Explore Synthetic
100+ metrics tracked
Focus on the performance metrics that matter most on your pages
Monitor more than just Start Render and Page Load. Track everything from Lighthouse scores and Core Web Vitals to specific third parties and custom metrics.
Largest Contentful Paint
First Input Delay
3.12s
50ms
Page Load
8.6s
268%
Third Party Size
768KB
180%
Bounce Rate
0.83%
125%
Total Blocking Time
73ms
54%
Visually Complete
7.2s
50%
Lighthouse Performance
67
40%
Time to Interactive
4.75s
28%
SpeedIndex
1.87s
21%
Inline CSS Size
142KB
30%
JS Total Blocking Time
960ms
29%
Third Party JS CPU
127ms
23%
First CPU Idle
5.98ms
21%
Backend (TTFB) Time
0.39s
21%
Average DOM Depth
15
7%
JS Requests
35
6%
Total Requests
59
3%
Core Web Vitals
Full tracking and debugging tools for Google Core Web Vitals. These metrics are a Google search ranking factor.
Explore Web Vitals
Competitor Benchmarking
Measure your competitors' web performance alongside your own, and make sure you’re at the top of your industry.
Explore Benchmarking
Integrate with your CI/CD process
Make web performance part of your workflow
The SpeedCurve API supports CI/CD so you can integrate performance monitoring into your development process. Performance budgets alert you via email or webhook when performance issues occur – and you can even break the build when thresholds are violated.
bash
⇒   s p e e d c u r v e   d e p l o y   - - c h e c k - b u d g e t s
Deploy 489149 triggered 6 test for Herald
Deploy 489150 triggered 14 tests for Radio NZ
Waiting for tests to compelte…. 22 / 22 (100%)
All test completed
Checking status of performance budgets…
Start Render in Home is still over budget
Start Render, Guardian, Home 2.1s => 2.4s (20% over budget)
Start Render, Radio NZ, Home 1.2s => 1.3s (35% over budget)
Start Render, Herald, Home 1.1s => 1.2s (40% over budget)
Email Icon
SpeedCurve Alerts
Radio NZ: Start Render in Home is over by 35%
Slack Icon
New message from SpeedCurve
NZ Herald: Start Render in Home is over by 40%
Budgets and Alerts
Setup absolute or rate of change thresholds for your most important metrics. You’ll be alerted when these thresolds are crossed.
Explore Performance Budgets
CI/CD and API
Integrate with CI tools like Jenkins, Github, or CircleCI using our Deploy API. Track the performance impact of code changes between deploys.
Explore CI/CD
New Features
Synthetic On-demand testing
On-demand testing
By popular demand, we've added on-demand testing in the SpeedCurve UI. You can now test any URL you like, it doesn’t have to be part of your site. Great for testing out competitor pages or your own scripts.
Interaction to Next Paint Attribution
INP sub-parts & attribution
We've just released more diagnostic detail for Interaction to Next Paint (INP). Identify which elements on your site are causing delays during interaction and use the sub parts to work out what is causing the delay in the interaction.
Meet our small, friendly & dedicated team
Talk to the most experienced people in web performance
We can help you with anything from auditing your pages to configuring your monitoring. Our team includes some of the most experienced performance professionals in the industry. Benefit from our 20+ years of making mistakes – and ultimately learning how to get it right.
Tammy Everts
Tammy Everts
Andy Davies
Andy Davies
Cliff Crocker
Cliff Crocker
Mark Zeman
Mark Zeman
Steve Souders
Steve Souders
Tim Kadlec
Tim Kadlec
KickStart
Get your monitoring up and running. We'll make sure your setup is configured to give you the best value from our tools.
Explore Consulting
HealthCheck
We do regular audits of your site and tell you exactly what you need to do to fix your pages. We don’t just send you reports – we meet with you to answer your questions, educate your team, and make sure you have everything you need to stay fast.
Explore Consulting
We are here to support you on your performance journey
We are obsessed with web performance. We want your organization to care about it, too. We make performance digestible for people who are just getting started. For those who are more experienced, we can go much deeper – for example, with custom metrics and dashboards. Wherever you are in your performance journey, we’re here to listen and help.
Skater Skater

Faster site. Happier users.
What's not to love?

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