Loop/Prompt Library / Speed, performance & cost
🔁 Lighter first page load
Shrinks how much a website downloads before the first screen shows, without changing how anything looks.
Use it when: Your web app feels slow the first time someone opens it.
🛑 Stops when: The first screen downloads fewer bytes, tests pass, and screenshots look exactly the same.
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Make [web app] download less before its first screen appears. First record: passing tests, phone and desktop screenshots, and how many bytes the first screen actually downloads. Then delay, compress, or remove one item at a time. Rebuild and re-run everything. Keep the change only if tests pass, screenshots are identical, and bytes went down. Otherwise undo it. Try at most [15] items. Ask before removing a library you are unsure about. Report bytes before and after.
Review every change the agent makes before you keep it. Set a budget or round limit — the prompt includes one.
Idea from Forward Future's Loop Library · by Christian Katzmann. Prompt rewritten in plain English by FixKit AI.
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