3 Quick Hacks to Analyze Any Website’s Tech Stack & Performance

You know that feeling when you visit a beautiful website that's just lightning fast ? 

And you immediately think: "What stack are they using to make this work so well? Why I can't get the same thing for my own gig?"

Or maybe you've been handed some old website to take care of (with zero instructions, of course) and need to figure out how it's put together? Because you don't even know where to start...

Well I've got 3 free tricks that'll spill all a website's secrets in under 5 minutes. No tech degree required.

1. Right-Click + “Inspect” (Chrome DevTools)

Chrome DevTools can help you understand on which platform a website was built and which APIs this website uses. You can also access the pictures of the website and check their specs.

How to use:

• For the website platform: Right-click anywhere on the webpage → Select "Inspect" (or press Ctrl+Shift+I). Then you can do Ctrl+F and type "WordPress", "Wix" or "Squarespace" in the search window. If one of these 3 words shows up, you've found the platform used to build this website.

For instance, if you go on Unlock APAC's website and do Inspect, then Ctrl+F, type "Wix", you'll see this word popping out all over the page, which is normal since this website was built on Wix Studio.

• For APIs: Navigate to the "Sources" tab to check frameworks (e.g., WordPress, React). Some businesses use specific platforms; it frequently happens for sport or education businesses because they need a specific structure for their website.

For instance, the local yoga business Ikigai built its website on the platform Mindbody so people can easily book sessions.

Or the American School in Hong Kong is using Finalsite so parents can log in to their personal accounts.

What should you do with this information? If you want to build a website similar to the one you checked, you have the different ingredients needed: Content (You can download pictures) and platform. You can also check the price of the platform. (For instance building a website on Mindbody cost 79 USD per month)

Note that there is also a way to find the name of the template or the web development company if the website has been built from scratch.

2. Ask an AI LLM (ChatGPT/Claude/DeepSeek)

Now you can also use AI LLMs to reach the same results: DeepSeek, ChatGPT or Claude.

How to use:

1. Use this prompt:

   
   

   "What technologies power [website URL]? List CMS, frontend framework, hosting, and performance scores."

   
   

If it doesn't work, use Method #1 above or copy paste the code of the website in the LLM

1. Right-click on the homepage → Select "View page source"

2. Copy about 20 lines of code (maximum)

3. Run Google Lighthouse (Performance Audit)

This free tool gives you a quick performance overview for both desktop and mobile versions of your website.

How to run it:

1. Open Chrome DevTools (F12) → Go to the "Lighthouse" tab

2. Select "Performance" + "Best Practices" → Click "Generate Report"

3. Check these scores (out of 100):

   
   

   • Performance (LCP, TBT, CLS)

   • Accessibility

   • SEO

   • Best Practices

A score above 90/100 means well-optimized tech.

Those are the 5 Performance Metrics Lighthouse Analyses:

1. First Contentful Paint (FCP): When the first text/image appears

2. Largest Contentful Paint (LCP): Time to load the biggest element

3. Total Blocking Time (TBT): How long the page freezes during loading

4. Cumulative Layout Shift (CLS): Measures unexpected layout jumps

5. Speed Index (SI): How fast content becomes visible

If #1, #2, and #3 are in the red, you should read the report and understand how to fix these issues. Usually, it's due to heavy pictures on the homepage, which have not been compressed or are in PNG format. You can easily compress these pictures and replace them.

These three free tools will help you get an idea about the elements used to build any website. Use that information to improve your current website, find the right platform to make these upgrades, or build a similar website to one that is working well.

If you need help to start your Wix Studio website, you can get an automated quote directly on your mailbox, simply answer these 3 questions!