Web Vitals — Free SEO Tool

Web Vitals is an Astrina tool for SEO and search visibility. LCP, CLS and TTFB measured in a real browser. It opens the page in a real browser on our render cluster, giving accurate results for JavaScript-heavy sites.

How to use Web Vitals

1. Enter the URL of the page.
2. Click "Run the check."
3. The page opens in a real browser on our servers — this takes 10–20 seconds.
4. Review the screenshot or metrics when the job completes.

What Web Vitals is used for

Professionals working in SEO and search visibility use this tool to save time and catch errors before they become problems. Common use cases:

• Auditing and quality checks in SEO and search visibility
• Validating or converting output before deploying
• Debugging issues quickly without switching between multiple tools
• Generating boilerplate output to speed up development

Key features

• Fast: server-side analysis in seconds
• Free for most use cases — no account required for the majority of checks
• Accurate: uses the same techniques as professional SEO and security scanners
• Privacy-friendly: we do not store the content we analyse beyond the session

About this tool

This is part of Astrina's suite of 24 SEO and search visibility tools. All tools are available at astrina.io/utilities.

Frequently asked questions

Try the Web Vitals now — no account required for most checks, and the result is ready in seconds.