Can it detect memory leaks?

Yes, it guides users through the process of taking heap snapshots, comparing allocations, and identifying detached DOM nodes that prevent garbage collection.

How do I fix layout thrashing using this skill?

The skill teaches you to identify 'purple' layout blocks in the flame chart and provides patterns to batch DOM reads and writes to avoid forced synchronous layouts.

What is the primary tool used for analysis?

The skill focuses primarily on the Chrome DevTools Performance panel, utilizing flame charts to visualize main-thread activity and script execution.

How does this skill help with Core Web Vitals?

It provides specific diagnostic steps and code-level solutions for improving Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS) targets.

Does it support React-specific performance issues?

Absolutely. It includes strategies for identifying unnecessary re-renders, using React concurrent features like useTransition, and optimizing component memoization.

Browser Runtime Performance Profiler

Name: Browser Runtime Performance Profiler
Author: Agentient

byAgentient

0•

Analytics & Monitoring

Optimizes web application performance through expert Chrome DevTools profiling and Core Web Vitals analysis.

This skill empowers developers to diagnose and resolve complex frontend performance bottlenecks by leveraging advanced Chrome DevTools techniques. It provides systematic guidance for analyzing flame charts to identify long tasks, resolving layout thrashing through batched DOM operations, and optimizing Core Web Vitals such as LCP and INP. By integrating memory profiling and Lighthouse audits, it helps eliminate main-thread blocking and memory leaks, ensuring smooth, high-performance user experiences across all devices.

Key Features

01Memory leak diagnostics using Heap Snapshots and Detached DOM node analysis

02Detection and resolution of layout thrashing and forced synchronous layouts

03Real-time performance monitoring and Lighthouse audit interpretation

040 GitHub stars

05Advanced Flame Chart analysis to identify and break up long tasks (>50ms)

06Core Web Vitals optimization for LCP, INP, and CLS metrics

Use Cases

01Improving Interaction to Next Paint (INP) by offloading heavy computation to Web Workers

02Debugging scroll jank and animation stutter in complex React or Vue applications

03Identifying and fixing memory leaks in long-lived Single Page Applications (SPAs)

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add agentient/vibekit browser-runtime-performance-profiling

For use in Claude.ai and ChatGPT

Download Skill