How to check JSON-LD and fix code access issues

How to check if your blog has JSON-LD without going crazy

If you've ever tried optimizing your website on a platform that doesn't let you touch the code... you've probably gotten desperate. 

You want to put your structured data (JSON-LD) , insert a script, check that Google sees your article as you want, but when you open the browser console you only see endless lines of letters and numbers that make no sense.

I understand. It happened to us exactly like that. And what seemed like a dead end ended up becoming a tremendous learning experience.

And today I'm going to tell you how I managed , step by step, to find real solutions when platforms limit you, how to check if your blog has JSON-LD as it should, and how  artificial intelligence can be your ally in this process.

The real issue lies in the limitations of the platforms

Countless platforms that sell themselves as "simple" offer you the possibility of creating a website without any programming knowledge. 

• But the truth is that you don't have access to the source code. 
• You are limited to using predefined templates. 
• Advanced scripts (SEO, JSON-LD, analytics) are hidden or have restrictions.

This means that when Google reviews your website, you are left wondering if it is interpreting your content correctly.  

The outcome: 

• A lot of wasted hours trying to confirm the presence of an Article or BlogPosting in the code.   
• Chrome tools packed with alerts.   
• And the constant impression that fully optimizing your website is unattainable. 

This is where many people end up giving up.

The path of proven failures

In our direct experience, we tested various fragments in the console, something like this:

const scripts = [...document.querySelectorAll('script[type="application/ld+json"]')];let jsons = scripts.map(s => { try { return JSON.parse(s.textContent) } catch(e){ return null }}).filter(Boolean);let article = jsons.find(j => j["@type"] === "Article" || j["@type"] === "BlogPosting");console.dir(article);

Result: (undefined) nothing at all. Same thing again. The screen is blank, with no trace of anything. 

You try again and again, but it only creates frustration. 

And what can we do? It is what it is. Because sometimes, even though it may seem unbelievable, the information is there on your page , but it's buried among a thousand other things , among organizational charts, FAQs, and other stories.

The masterstroke: a bookmarklet that is pure magic

To avoid unnecessary headaches, we came up with the perfect solution: a bookmarklet , a bookmark saved in your browser that, with a simple click, examines the current page and reveals all the information organized just as Google would interpret it.

It's quite simple:

1. In your browser, create a new bookmark.
2. Call it, for example, "View JSON-LD". 
3. In the space provided for the URL, simply enter this code.

javascript:(function(){  
let scripts=[...document.querySelectorAll('script[type="application/ld+json"]')];  let nodos=[];  
scripts.forEach(s=>{    
try{      
let j=JSON.parse(s.textContent);      
if(Array.isArray(j)) j.forEach(x=>nodos.push(x));      
else nodos.push(j);    
}catch(e){}  
});  
let tipos=[...new Set(nodos.map(n=>([].concat(n['@type']||[])).join('|')))].filter(Boolean);  
let msg=`LD+JSON scripts: ${scripts.length}\nNodos: ${nodos.length}\nTipos encontrados:\n- ${tipos.join('\n- ')}`;  
let post=nodos.find(n=>([].concat(n['@type']||[])).some(t=>['Article','BlogPosting'].includes(t)));  
if(post) msg+=`\n\nPost detectado: ${post.headline || '(sin título)'}`;  
alert(msg);
})();

With a simple tap, you'll see something like this in a pop-up window:

LD+JSON scripts: 4 
Nodes: 10 
Types found: 
- Organization 
- WebSite 
- FAQPage 
- BlogPosting 
- Article 
- WebPage 
Post detected: How to optimize LCP, INP and CLS to maximize performance and conversion in 2025. Includes technical checklist and free speed audit in 24 hours.

That's it! No weird console complications, no unnecessary headaches.

AI as a personal assistant

This is where AI, (ChatGPT style) comes in.

It becomes useful. If you find yourself stuck with lines of code, parts that don't work, or programs that seem to have errors, AI can: 

• Detailing exactly what is happening in your code.
• Suggest clearer and simpler versions. 
• Automate reviews (e.g., checking multiple posts at once). 
• Create scripts tailored to your particular situation. 

Bottom line: Even if you can't modify your platform's code, there's always a workaround if you know how to use external tools.

Explanatory chart

Imagine a scheme in three phases:

1. Problem  → Platform closed → Console full of errors.

2. Path → Attempts with snippets → Frustration → No clarity.

3. Solution → Bookmarklet + AI → Instant JSON-LD Detection → Real SEO Optimization.

Conclusions

• Despite the limitations of your platform, there are always ways to verify your true SEO.
• The bookmarklet is the most agile and accessible tool for confirming the presence of JSON-LD.
• AI broadens your horizons: it not only fixes bugs, but also helps you discover options.
• Maintaining control over your website is possible , even if platforms try to restrict you.

Next steps

1. To get started, install the bookmarklet and test it with your articles (you'll see how the bookmarklet works perfectly!).
2. Please compare results with the official Google Rich Results tool .
3. And finally, let AI help you optimize what your platform doesn't allow you to touch.

Final moral:  Don’t give up at the first “undefined.”

Sometimes frustration is just the prelude to a solution that will make you stronger as a digital creator.

Frequently Asked Questions (FAQ Schema)

1. What is JSON-LD and what is it used for?

JSON-LD is a structured data format that helps Google better understand the content of a page and display it in rich results.

2. How do I check if my website has JSON-LD without accessing the code?

You can use a bookmarklet in your browser that automatically detects JSON-LD blocks present on any page.

3. What happens if my blog is not marked as Article or BlogPosting?

Google may not identify it as blog content, which reduces the likelihood of appearing in rich results.

4. Do limited platforms allow adding JSON-LD?

Many don't allow you to modify the source code, but there are external methods such as scripts, AI tools, or online validators.

5. Do you need to be a programmer to implement JSON-LD?

No, there are automatic schema generators and easy techniques like the bookmarklet to verify it without touching code.

6. Can artificial intelligence help with JSON-LD?

Yes, AI allows you to create custom scripts, detect errors, and propose creative solutions when the platform is restrictive.

Stop Fighting with Code and Make Google Love You

If you've made it this far, you know what it feels like:

• Frustration, wasted time, mistakes you don't understand...
• And on top of that, your website doesn't appear as it should on Google.

But don't worry: you don't have to be a programmer to make your website work.

At  MM DESIGN WEB we take care of everything for you:

• We assemble the structured data that Google requests.
• We optimize your website so it loads quickly and appears at the top.
• We give you clear results, without technical hassles.

The next step? Request your free quote now and in less than 24 hours you'll have a customized plan for your website.

I want my SEO quote without complications

What did you think of this post?

Leave us your thoughts in the comments. Your feedback is invaluable to us!