benchmark

Measure page load performance and detect regressions against a baseline.

3|3|Updated Mar 26, 2026

Search Tags:#performance #regression #benchmark #web #baselines #page-load

Ready to run

npx skills add https://github.com/tsensei/ReelMistri --skill benchmark-tsensei

💬 Prompt for ChatGPT / Claude Chat▼

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

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This benchmark skill measures web performance and detects regressions against a baseline to help teams ship faster, smoother experiences.

Core Features & Use Cases

Phase-based data collection using the browse daemon to gather navigation timing, resource metrics, and bundle size data.
Baseline capture, comparison, trends, and reports stored under .gstack/benchmark-reports for historical tracking.
Use Case: Run /benchmark on a URL to generate a regression report, compare against a baseline, and get actionable optimization tips.

Quick Start

Run the /benchmark command with a target URL to start a full performance audit and baseline comparison.

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 against a baseline?▼

The benchmark skill measures page load performance metrics like TTFB, FCP, and LCP, along with bundle and transfer sizes, then compares them against a historical baseline to detect regressions in web performance.

What page load metrics are captured during a performance benchmark?▼

A performance benchmark captures navigation timing data including TTFB, FCP, LCP, and bundle or transfer metrics to provide a comprehensive view of page load behavior and resource loading efficiency.

How do I benchmark multiple URLs and branches for performance trends?▼

The tool applies benchmark checks across multiple URLs and branches, storing the resulting timing data and reports in a dedicated directory to support ongoing trend analysis and historical performance tracking.

Do I need a specific browser environment to measure page load performance?▼

Measuring page load performance requires a browse daemon to gather navigation timing and resource metrics, ensuring accurate phase-based data collection for your baseline capture and regression analysis.

Where are performance benchmark reports and baselines stored?▼

Performance benchmark reports and baselines are stored locally under the .gstack/benchmark-reports directory, enabling historical tracking, trend analysis, and quick comparisons between current results and past baselines.