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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 Rum
SpeedCurve Responsive
SpeedCurve Budgets
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
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.
Synthetic Monitoring
Test your pages in the lab to measure the impact of code changes. Get detailed waterfalls, diagnostics, and optimization recommendations.
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.
Competitor Benchmarking
Measure your competitors' web performance alongside your own, and make sure you’re at the top of your industry.
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.
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.
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.