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Performance Analytics
Performance Analytics shows audit results for the last published version of your project. Nova collects performance scores and related metrics for both desktop and mobile views.
Use your performance reports to review:
- How your published website performs on desktop and mobile.
- Audit scores for performance, accessibility, best practices, and SEO.
- Technical issues that may slow down your website or reduce its overall quality.
To view your Performance Analytics, open your project in Nova and click the Dashboard icon (
). Then, click Performance (
) from the dashboard menu.
You must publish your website to run performance audits. If you have not published your website yet, see Website Publishing first.
Run an audit
Click Run Audit to generate your first report. If your project already has a report, click Update Audit.
The audit tests your published website by simulating a mobile device and a desktop browser. Use the device selector to switch between results for Mobile and Desktop experiences. The Last analyzed timestamp shows when Nova generated the current report.
The audit only evaluates the currently published version of your website. Nova will ignore unpublished changes in the editor. Publish your changes before updating an audit.
Understand your scores
A complete audit shows four scores ranging from 0 to 100, where higher is better:
| Score | What it measures |
|---|---|
| Performance | How fast your website loads and becomes usable. |
| Accessibility | How easily people using assistive features navigate your website. |
| Best Practices | How well your website follows modern web development standards. |
| SEO | How effectively search engines can find your website. |
As a general guide, a score of 90 or above is good, 89 to 50 needs improvement, and below 50 is poor.
Select a score to review issues by category.
Lab Data
The Lab Data section shows performance results that Nova simulates in a controlled environment. These measurements update every time you run an audit.
| Metric | What it measures |
|---|---|
| LCP (Largest Contentful Paint) | How long it takes for the largest visible element to appear. |
| CLS (Cumulative Layout Shift) | How much visible content unexpectedly moves while loading. |
| FCP (First Contentful Paint) | How long it takes for the first text or image to appear. |
| TBT (Total Blocking Time) | How long background processes block the page before it can respond smoothly. |
| Speed Index | How quickly visible content appears across the page. |
Review issues by category
This list shows relevant issues for the score category you select. Use it to review specific problems and identify which items may have the biggest impact on your website.
Click the Try to fix (
) button next to an issue to address it. Nova will generate a prompt and attempt to fix the issue automatically.
| Category | What it shows | Examples |
|---|---|---|
| Performance Issues | Identifies opportunities and diagnostics that can improve page load performance. |
|
| Accessibility Issues | Provides checks that help make your website usable for all users, including those with disabilities. |
|
| Best Practices Issues | Evaluates web development best practices, including security and modern API usage. |
|
| SEO Issues | Provides checks that help search engines understand and rank your content. |
|
Improve your scores
To improve your website’s performance over time:
- Run or update an audit.
- Review the lowest score or the most important issues in the selected category.
- Click Try to fix or make changes manually.
- Publish your updates.
- Return to the Performance tab and update the audit.
Repeat this process until your published website reaches the results you want.