benchmark

Benchmark web pages against baselines to detect performance regressions.

1|Updated May 27, 2026

Search Tags:#performance #diff #benchmark #web-vitals #baselines #trend #page-load

Ready to run

npx skills add https://github.com/mi179/claude-skills --skill benchmark-mi179

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: benchmark
Source: https://github.com/mi179/claude-skills/tree/main/user/gstack/gstack/benchmark
Command: npx skills add https://github.com/mi179/claude-skills --skill benchmark-mi179

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Performance regression detection by benchmarking web pages and comparing against baselines. The skill helps you flag regressions early across PRs and over time.

Core Features & Use Cases

Establish baselines for TTFB, FCP, LCP, and DOM timings, plus resource sizes, and compare against new runs.
Track performance trends across multiple PRs to surface regressions early.
Run diff/trend analyses to focus on pages impacted by changes and guide optimization.

Quick Start

Run a benchmark against a target URL to measure performance and compare it to existing baselines.

Frequently Asked Questions about benchmark

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I detect web performance regressions in a PR workflow?▼

Track web performance trends by benchmarking pages across multiple PRs and comparing new runs against historical baselines. This surfaces regressions over time by maintaining per-URL metrics like resource sizes and page-load timings for continuous trend analysis.

What web vitals metrics can I use to establish baselines for page load?▼

Benchmarking web pages compares TTFB, FCP, LCP, and DOM timings, plus resource sizes, against per-URL baselines. This mechanism flags regressions early by diffing new runs against established performance thresholds.

Can I run multi-page benchmarks to compare performance diffs?▼

Yes, you can run multi-page tests to benchmark performance and compare diffs. This skill focuses on pages impacted by changes, maintaining per-URL baselines to surface regressions and guide optimization across affected pages.

What's the best way to analyze page-load trend data over time?▼

Analyze page-load trend data by benchmarking web pages and maintaining per-URL baselines. Running diff and trend analyses over multiple PRs surfaces performance regressions early and guides optimization for impacted pages.