Perform - Core Web Vitals Analyzer

Overview

Measures Core Web Vitals (LCP, FCP, CLS, INP, TTFB) for any webpage you visit. See performance scores instantly in the toolbar.

View Core Web Vitals at a glance (LCP, FCP, CLS, INP, TTFB) for any page, directly from your toolbar. Analyze resource loading, identify slow scripts, and audit the impact of third-party resources. Features are designed for SEO professionals, marketers, developers, and advanced webmasters. - Real-time LCP badge on every tab - Core Web Vitals dashboard - Resource breakdown by type (JS, CSS, images, fonts) - Slowest resources identification - Third-party domain analysis - SPA navigation support

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Details

Version
1.1.0
Updated
January 20, 2026
Flag concern
Size
22.18KiB
Languages
English
Developer
August SEO, LLC
12325 E Valleyway Ave Spokane Valley, WA 99216-0927 US
Website
Email
mail@augustseo.com
Phone
+1 509-731-3334
Trader
This developer has identified itself as a trader per the definition from the European Union and committed to only offer products or services that comply with EU laws.
D-U-N-S
056558739

Privacy

The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, visit the developer's support site

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