performance-bookmarklet – Instantly Diagnose Page Load Bottlenecks
From the repo · “Performance-Bookmarklet helps to analyze the current page through the Resource Timing API, Navigation Timing API and User-Timing - requests by type, domain, load times, marks and more. Sort of a light live WebPageTest.”
Click a bookmarklet to instantly analyze this webpage's speed and performance.
"A startup founder wants to improve their website's loading speed. They click the Performance Bookmarklet on their homepage. The analysis reveals multiple resource loading issues. They use the insights to optimize images and caching, reducing load times by 30% within a week."
- •When you need to quickly identify performance bottlenecks on your website
- •When you want to compare the performance of different webpage elements, such as images or scripts
- •When you need a lightweight alternative to more comprehensive web performance testing tools
https://example.com #?performance-bookmarklet to run the Performance-Bookmarklet analysis on a specific webpage
Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.
Installs with a command or two; your AI agent can do it for you.
mkdir -p ~/.claude/skills/performance-bookmarklet && curl -fsSL https://workflowstacks.com/api/skills/performance-bookmarklet/claude-skill -o ~/.claude/skills/performance-bookmarklet/SKILL.mdOpens the app with this repo with the prompt ready to go — no copy-paste needed.
Performance-bookmarklet – Instantly Diagnose Page Load Bottlenecks is a small JavaScript project (~1.7k lines across 23 code files). Setup is light: install Node.js, run one command. Last commit 44 months ago, MIT license, no tests found.
- 1README.mdStart here — what it does and how to install it
- 2package.jsonDependencies and the commands it exposes
- 3src/data.jsInside src/ — the main logic begins here
Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.
Installs with a command or two; your AI agent can do it for you.
mkdir -p ~/.claude/skills/performance-bookmarklet && curl -fsSL https://workflowstacks.com/api/skills/performance-bookmarklet/claude-skill -o ~/.claude/skills/performance-bookmarklet/SKILL.mdOpens the app with this repo with the prompt ready to go — no copy-paste needed.
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