🧠 How To Use ChatGPT to Run Full Site Audits—SEO, Speed, UX & More

No tools, no extensions—just smart prompting and ChatGPT o3.

May 01, 2025

đź‘‹ Hello hello,

Today, we're tackling something essential that frequently gets pushed to the bottom of your to-do list: Search Engine Optimization (SEO).

Not because it’s unimportant—quite the opposite. But it usually feels complicated. Audits. Plugins. Keyword research. Core Web Vitals. Who has the time?

Here’s why you should care:

If your website loads slowly, lacks proper image tags, or buries important content below the fold, you’re not just losing Google points.

You’re losing people. Attention. Conversions. Sales.

But what if you could run a simple, effective SEO audit without any technical tools, coding knowledge, or paid software? In this week’s guide, I’ll show you how to run a surprisingly effective SEO audit using just:

• Google’s free PageSpeed Insights
• ChatGPT’s o3 model 
• And this super prompt cheat sheet

No SEO tools. No Chrome extensions. No guesswork.

Let’s break it down 👇

🧩 The Tech Stack: What’s What

OpenAI’s model that analyzes visual information and provides context-aware recommendations

Google's free tool for measuring website performance metrics

âś… The Complete SEO Audit Workflow

📸 Step 1: Get Your Website Performance Snapshot

• Open PageSpeed Insights
• Enter your website URL and click “Analyze”
• Take a full screenshot of the results

Your screenshot should look like this

Why it matters: This report shows you what’s slowing your site down and where your SEO might be falling short, from missing alt text to inefficient code.

⸻

🧠 Step 2: Let ChatGPT Analyze Your Results

• Head to ChatGPT and make sure you’re using the o3 model (because this model supports advanced image reasoning)

• Upload your screenshots

ChatGPT will return a detailed set of suggestions—some quick fixes (like compressing images), others more advanced (like reducing render-blocking resources).

I ran this on digitalsamaritan.co and got clear, actionable feedback that took less than 2 minutes to generate.

Bonus Intel

🧠 Bonus: Auto-generate Alt Text for All Images

If the model flags missing or under-optimized image alt text, here’s what to do:

• Screenshot the images or sections of your website that contain them
• Upload the image to ChatGPT o3
• Prompt: Bulk SEO Optimized ALT text 

This saves time and improves both accessibility and search rankings.

đź‘€ ICYMI

How I Use ChatGPT to Analyze, Fix & Redesign a Webpage in Minutes - Use this workflow to let ChatGPT audit, troubleshoot, and rework your webpage from top to bottom—copy, layout, and UX included.
👉 Read the full breakdown →

[PRO] How I Used AI to Build Spot-On User Personas - This workflow demonstrates how to train AI to create high-converting personas using real data.
👉 Steal our strategy!

AI Roundup

📱 đź”— Google + Apple = Gemini in Siri?
Google’s Gemini AI might soon power Siri—yes, on iPhones. Apple is reportedly exploring licensing deals to enhance its voice assistant capabilities.
Learn more →

🖼️ Edit Images Directly in Gemini
Google just rolled out native image editing inside the Gemini app. You can now tweak backgrounds, remove objects, or add new ones—no design tools needed.
Read here →

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Until next time,
Team DigitalSamaritan

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