# Web Performance Experiments

## Test your Website's Performance against different optimizations without implementing them.

### Over 10 Different Experiments

#### Block Certain Requests

Prevent Certain Requests from executing during the test.

#### Optimize Image Loading

Lazy Load Below-the-Fold Images and Preload Critical Images with a single click.

#### Preload, Delay & Defer Requests

Apply various optimizations on CSS, JavaScript, and Font Files.

### Visually Compare Results

#### Compare Results Frame by Frame

Compare the Video to understand how the experiment impacts key page load events.

#### Detect Visual Errors Due to Optimizations

Certain Optimizations can break the Page and give unexpected design breaks and Layout Shifts. These errors can be diagnosed easily with Video Comparison.

### Save Time & Effort on Guesswork

#### Pro Experiment Suggestions

SpeedVitals automatically recommends the requests to select for an experiment.

#### Easy to Use

Implement various optimizations without touching the code or breaking a production site.

### Ready to Experiment?