SEO Render Inspector

Extension Developer Tools

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Overview

Compare raw HTML vs JS-rendered DOM: see which SEO elements are server-side, injected, or removed by JavaScript.

SEO Render Inspector compares a page's raw HTML (what the server returns, before JavaScript) with its JavaScript-rendered DOM, and tells you — element by element — what is server-side, injected by JavaScript, or removed/truncated by JavaScript. It checks: meta tags, textual content (with the exact text injected or removed by JS, shown in red), structured data (JSON-LD & microdata), canonical, hreflang, internal links, indexability (HTTP status, X-Robots-Tag, meta robots) and user-agent cloaking (your browser vs Googlebot). Why it matters: search engines render JavaScript, but most AI assistants (ChatGPT, Claude, Perplexity) and their crawlers fetch the raw HTML and do NOT run JavaScript — so anything only injected by JS is invisible to them. A clean, traffic-light report shows exactly where you stand. All analysis runs locally in your browser. No data is collected or transmitted.

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Details

Version
1.3.1
Updated
June 16, 2026
Flag concern
Size
39.05KiB
Languages
English
Developer
Email
dario@webinfermento.it
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization

The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

View Rendered Source

4.4

View source is dead. See how the browser renders a page, not just what the server sends.

Canonical URL Checker — SEO Tag Audit

0.0

Canonical URL checker: paste page HTML to audit rel=canonical, og:url and robots meta tags, and compare two URLs for duplicates.

CSR vs SSR Detector

4.5

Detect if a webpage is using Client-Side Rendering or Server-Side Rendering

Will it Index

5.0

Analyzing noindex and canonical tags in HTML, <head>, HTTP headers, and DOM. Provides instant SEO status.

Meta Checker

5.0

Your metadata mate for GEO and SEO. Compare the live DOM with the original HTML to spot new, changed, or removed metadata.

HTML/CSS Section Copier

5.0

Extracts selected section and provides raw HTML and CSS.

Unused CSS/JS Detector

3.5

Detects unused CSS and JS files on web pages

CSR vs SSR Render Detector

5.0

Visually identify Server-Side Rendered vs Client-Side Rendered content on any webpage.

DOMExtractor

5.0

Extract DOM elements with CSS styles from any website. For developers & designers. Export as HTML, CSS, React or Vue components.

Rendering Difference Engine

5.0

Identify SEO signals added, removed, or altered in page HTML during JavaScript rendering — without digging into the code.

DeepDOM - Technical SEO & Render Debugger

5.0

Audit the modern web stack. Compare SSR vs. CSR, trace redirect loops, and validate Schema all from the DOM.

Web Code Extractor – HTML, CSS & JavaScript Grabber

0.0

Extract HTML, CSS, and JavaScript from any webpage. Pick individual elements or grab the full page.