CRO Djinn

About

CRO Djinn helps you understand why your landing pages aren't converting as expected. Instead of guesswork or waiting weeks for an external audit, you can scan a page with this extension and get practical, structured insights & instructions in under a minute.

***Instructions to get a free Gemini API Key***
https://cro-djinn.vercel.app/#api-key-demo

Problems Solved:

• Advertisers need direction on what changes will improve conversion rates of their landing pages
• Manual audits are inefficient & requires specialized knowledge 
• Existing tools like ChatGPT require manual effort through thoughtful & detailed prompts, screenshot's, & force you to stitch outputs together - CRO Djinn automates it all in a ready to share PDF in a fraction of the time & effort.


CRO Djinn simplifies this by combining contextual & visual analysis with conversion optimization best practices & consumer psychology to give clear, prioritized recommendations in under 60s.


How it Works:


• Go to a page you want to analyze
• Click the CRO Djinn icon
• Scan the page (30–60 seconds)
• Review summary and recommendations
• Export a PDF if needed


When you scan a page, CRO Djinn:


• Receives a complete visual scan of your landing page
• Receives complete contextual content (All text, CTA positions & sizes)
• Adjusts analysis depending on page type & primary goal, i.e. home pages, pricing pages, blog pages, or campaign landing pages
• Utilizes Page & Industry specific knowledge that adapts to your business - because a SaaS landing page shouldn’t get the same advice as an E-Commerce product page.
• Provides prioritized Fixes, each with an impact/effort rating and actionable steps
• Provides a customer Journey Lens - showing how visitors may be experiencing your page
• Offers a PDF Export for clean reports you can share with stakeholders


Works with either OpenAI GPT 5.2, 5.1, 5-Mini, 4.1, 4.1-Mini, & Gemini 3-Pro, 3-Flash, & 2.5-Pro


Cost:

• FREE with Google Gemini (Gemini 3 Flash)
• OpenAI GPT-5.1/5.2 available at standard usage cost (~$0.03–$0.08 per page)

No subscriptions, no credit card, no account setup


Update v1.0.2: Added New Gemini 3 & ChatGPT 5.1/5.2 models. 

-Deprecated both 2.5 Flash for poor quality and GPT 5 for slow response time
-Google updated free tier rate limits, Gemini 3 Flash is free, 2.5 pro & 3 Pro require paid keys