Prompt Optimizer: Turn a Rough Draft into a Clear Prompt

Type what you actually want in plain words, click Optimize, and get back a sharper, more specific prompt — before you send it to ChatGPT. A vague prompt gives a vague answer; the Prompt Optimizer fixes the input so the output lands closer on the first try.

It's a button the free ChatGPT Pro Tools extension adds to the ChatGPT composer. On Chrome it runs on-device, so your draft never leaves the browser.

The ChatGPT Pro Tools Prompt Optimizer rewriting a rough draft into a clearer prompt — One click rewrites a rough draft into a clearer, more effective prompt

What You Get

One-click rewrite — a button in the composer turns a rough draft into a clear, effective prompt
Adjustable tone — steer the rewrite formal, casual, or somewhere in between
Adjustable length — keep it tight or let it spell out more detail
Optional shared context — add background once so the rewrite fits the task you're working on
On-device by default — the free engine uses Chrome's built-in AI (Gemini Nano); the draft stays in your browser
Cloud engine option — Pro Cloud AI is faster and enables the optimizer on Firefox

Pair it with the Prompt Manager — optimize a draft once, then save the polished version as a reusable template.

Why ChatGPT's Composer Isn't Enough

ChatGPT takes whatever you type and answers it — there's no built-in "make this prompt better" step. So a half-formed request gets a half-useful reply, and you burn turns re-explaining what you meant. The Prompt Optimizer adds the missing step: it rewrites the draft for clarity and specificity before the model ever sees it.

How to Use It

Step 1: Install ChatGPT Pro Tools

Get it from the Chrome Web Store or Firefox Add-ons. It activates automatically on chatgpt.com.

Step 2: Draft and click Optimize

Type a rough version of your request in the composer and click the Optimize button. Set the tone and length, and add shared context if the task needs it.

Step 3: Review and send

The rewritten prompt replaces your draft in the composer. Tweak anything you like, then send it to ChatGPT.

Free vs Pro

On Chrome and other Chromium browsers the optimizer is free and runs on-device — the draft is rewritten locally and never leaves the browser. The optional Pro tier ($4.99/mo) adds Cloud AI: a faster cloud engine that also enables the optimizer on Firefox, which has no built-in on-device model. With Cloud AI on, an Optimize click sends only the draft being optimized; nothing is stored server-side. If you tag your history too, the same Cloud AI powers AI Tags.

Frequently Asked Questions

Is the Prompt Optimizer free?

Yes. On Chrome and other Chromium browsers the optimizer runs on-device using the browser's built-in AI (Gemini Nano), so your draft never leaves the browser. The optional Pro tier ($4.99/mo) adds a cloud engine that's faster and enables the optimizer on Firefox.

Does my prompt get sent to a server?

Not on the free tier — the on-device model rewrites your draft locally and nothing leaves the browser. With Pro Cloud AI on, an Optimize click sends only the draft being optimized to the cloud engine; nothing is stored server-side.

Does the Prompt Optimizer work on Firefox?

Yes, but it requires Pro Cloud AI. Firefox has no built-in on-device model, so the optimizer uses the cloud engine there and fires only when you click Optimize. On Chrome the free on-device optimizer works without Pro.