Tools
AMDT Blocks: view your page as a crawler would
AMDT Blocks is a free Chrome extension that divides any web page into its actual sections and shows, for each one, what function it serves, how many words it contains and what content a crawler can read, in Markdown format. Before reading, it prepares the page as a crawler would if it took its time: it pauses animations, opens accordions and closed tabs, scans the page to force deferred loading, and enters web components with an open root. It requests three permissions (activeTab, scripting and sidePanel), does not declare any host permissions, does not store any data—not even on the user’s device—and does not make any outgoing network requests. It is developed by AMDT, a digital marketing consultancy based in Madrid.
You open your website and see sections: the header, the headline, the services, the FAQs, the footer.
A web crawler sees something else. It sees what remains after the JavaScript has run – and it doesn’t always run everything. It sees what’s displayed – and it doesn’t click on anything. It sees what’s loaded – and it doesn’t wait forever. The difference between these two ways of viewing a page is where many pages lose their search engine ranking, even though, on paper, they’re well-designed.
What it does
It breaks the page down into its actual sections and tells you three things about each one: what function it serves, how many words it contains, and what content can be read, in Markdown format.
It is not a flat list of the page’s text. It is the page understood for what it is: a set of blocks with different functions and different weights.
Block-by-block analysis
The method is simple to describe but labourious to implement. The extension does, in this order, what a crawler taking its time would do:
- It pauses animations and reveals what appears as the page is scrolled, so that nothing is left half-loaded.
- It opens accordions and closed tabs, because that’s where content resides that exists but which nobody sees without clicking.
- It scans the entire page to force the deferred loading of images and sections.
- It accesses web components with an open root, where many online shops store half their content.
- It retrieves fixed headers and navigation bars, which other tools discard along with cookie banners.
- Y solo entonces divide, mide y convierte.
That order is the method, and it’s what separates a useful read from a jumble of text. Anyone can convert a page to Markdown; the real work lies in preparing the page before reading it.
What it finds that isn’t visible
It’s clear that this sounds abstract until you see an example. A real one, from a shop built on Shopify: the product page displayed two headings — ‘Description’ and ‘Details’ — and nothing below them. The full product content, one hundred and forty-five words including its features and table, was on the page but hidden behind a click.
For the visitor, a drop-down menu. For the person writing the listing, text that’s already written. For the business, the uncertainty of whether that counts or not.
The extension opens it, reads it and even tells you: it lets you know how many words were hidden away.
When it’s unsure, it says so
This is the feature you won’t find in other similar tools, and it’s the one that mattered most to us.
Every analysis ends with a verdict: reliable, partial, or ‘I don’t trust it’. And if it isn’t reliable, it explains why with specific figures: how much text it has recovered compared to what’s visible, which elements it’s had to discard, how many images it couldn’t read, how many sections were still collapsed. If less than seventy per cent of the text is recovered, it openly states that it doesn’t trust it.
A tool that always says ‘yes’ is of no use whatsoever. If the result for a page isn’t trustworthy, it’s better to know that now than to find out three months later.
Privacy: three permissions and no server
AMDT Bloques requests three permissions, and no more:
- activeTab — access to the active tab only when you click the icon. This does not extend to other tabs.
- scripting — inject, during analysis only, the engine that renders and measures the page.
- sidePanel — displays the result in the side panel, alongside the page.
Basically: it does not request any host permissions, so it cannot read any websites until you invoke it. There are no servers, no analytics, no telemetry and no accounts. And it does not request storage permissions, so it does not save absolutely anything, not even your preferences.
This has a practical consequence: it works just the same in a test environment or on an intranet to which only you have access – something that no tool running from a server can do.
You can find further details in the extension’s privacy policy.
What it doesn’t do
We’d rather tell you this before you find out for yourself:
- It does not run any artificial intelligence models. All the analysis is based on rules that run in your browser.
- It doesn’t tell you what AI systems see. It tells you the upper limit of what a renderer can read. Google runs JavaScript before indexing, so what appears here is quite similar to what it indexes; AI crawlers render less and do so more quickly. If a block appears empty here, it’s a red flag for everyone; if it appears full, it’s a good sign, not a guarantee.
- It does not analyse entire sites or provide a mobile view. It checks one page at a time.
- It doesn’t work on chrome:// pages or in the Chrome Web Store, because the browser blocks this for all extensions equally.
Installation
The extension is free and available on the Chrome Web Store under the name ‘Markdown and SEO by Blocks — AMDT’.
It works in Chrome and Chromium-based browsers (Edge, Brave, Opera and similar), and its interface is available in Spanish and English.
AMDT Blocks
Frequently Asked Questions
How do I know what content on my page Google reads?
Google runs JavaScript before indexing, so what it indexes resembles what is seen in the browser once the page has been rendered, not the original HTML. To check this section by section, you need a tool that renders the page as a crawler would and displays the result in blocks. AMDT Blocks does this in a single click and alerts you when its own reading is unreliable.
What is folded content and why does it matter for SEO?
Collapsed content is content that exists in the page’s code but is hidden behind an accordion or a closed tab: product descriptions, FAQs or technical specifications. It’s on the page, but a visitor cannot see it without clicking, and many analytics tools do not count it either. In a product listing on a Shopify shop analysed whilst developing this extension, 145 words of product description were hidden behind a click.
Is AMDT Blocks free?
Yes, it is completely free and has no paid version, subscription or locked features. It requires no registration or user account: you simply install it and it works.
What permissions does it request, and are they safe?
Pide tres: activeTab, que da acceso a la pestaña solo en el momento en que el usuario pulsa el icono y no se extiende a otras pestañas; scripting, para inyectar durante el análisis el motor que prepara y mide la página; y sidePanel, para mostrar el resultado junto a la página. No declara permisos de host, por lo que no puede leer ninguna web hasta que se la invoca explícitamente. Tampoco declara el permiso de almacenamiento: no guarda preferencias ni historial, ni siquiera en el equipo del usuario.
Is the content I analyse sent to any server?
No. All analysis takes place in the browser’s memory and the result is only saved to disk if the user clicks ‘Download’. The extension does not make any outgoing network requests, does not include analytics or telemetry, and does not run any artificial intelligence models: its analysis is based on rules that run locally.
On which pages does it not work?
It does not work on chrome:// pages or on the Chrome Web Store itself. This is a browser restriction that affects all extensions equally; it is not a limitation specific to this one. Nor does it analyse entire sites: it works on one page at a time.
Support
If you find a bug or a page that hasn’t been parsed correctly, please contact us via the contact form. The extension itself makes this easy: when it detects that it has been unable to parse a page correctly, it offers to copy a diagnostic report containing the URL, version and analysis figures. This diagnostic report does not include the page’s content.
AMDT Bloques is a tool developed by AMDT, a digital marketing consultancy based in Madrid.
Review this tool’s privacy policy.
