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Free Developer UtilityBeta100% Client-Side

Next.js & Webflow Performance Scanner

Audit Core Web Vitals, unoptimized assets, and client bundle size penalties instantly.

Inspect any public URL to detect uncompressed images, missing font display properties, heavy script tags, and layout shift risks.

Privacy Guarantee: Input data stays in browser memory. Zero code or credentials are sent to our servers.
Quick Test:
SSRF-Protected Request Proxy • 5,000ms TimeoutZero Client API Keys Required
[DISCLOSURE]Synthetic Network & Header Audit: This tool audits live server responsiveness, transport compression, critical security headers, and baseline DOM optimization markers. For lab emulation and field Core Web Vitals (LCP, INP, CLS) from real Chrome users, consult Google PageSpeed Insights.
Execution Architecture

How this tool operates

01

Enter Webpage URL

Provide the public URL you want to audit for performance bottlenecks.

02

Synthetic Browser Inspection

Simulates mobile and desktop viewport rendering to measure LCP, CLS, and asset transfer weights.

03

Actionable Optimization Report

Receive concrete code and asset optimization recommendations with direct file diffs.

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Our engineering squad specializes in performance tuning, Next.js hydration optimization, and sub-second page transitions.

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Technical Specifications

Frequently Asked Questions

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