We use a real browser to scan your JavaScript website exactly like Google does. No more blind spots from traditional crawlers.
Paste your website URL and click scan. That's it — no setup, no installation, no code changes required.
Our Chrome-based engine loads your site, executes all JavaScript, and waits for your app to fully hydrate.
Receive a detailed report with prioritized issues, ELI5 explanations, and framework-specific code examples.
Purpose-built features for JavaScript SEO that others don't offer
Puppeteer (headless Chrome) executes JavaScript exactly like Googlebot does.
All TiersSide-by-side screenshots showing what Google sees on desktop and mobile vs users.
Pro+Catches uncaught exceptions, console errors, and failed network requests.
All TiersDiscover orphan pages and optimize site structure for better crawlability.
All TiersPlain-English explanations with step-by-step fixes and code examples.
All TiersHere's what happens when you scan a JavaScript website with JSVisible
We spin up a real headless Chrome instance using Puppeteer — the same engine Google uses.
Your React, Vue, Next.js, or Angular code runs completely — all components render, all data fetches.
We capture uncaught exceptions, console errors, and failed network requests as they occur.
We wait for your SPA to fully hydrate — dynamic content, lazy-loaded components, everything.
We track all internal links to identify orphan pages and analyze your site's link structure.
We inspect the fully-rendered DOM for SEO issues: meta tags, headings, Open Graph, structured data, and more.
Issues are prioritized by severity and grouped with ELI5 explanations and code examples for your specific framework.
// What JSVisible does under the hood
const browser = await puppeteer.launch();
const page = await browser.newPage();
// Monitor for JavaScript errors
page.on('pageerror', err => jsErrors.push(err));
page.on('console', msg => {
if (msg.type() === 'error')
consoleErrors.push(msg);
});
// Load your JavaScript site
await page.goto(url, {
waitUntil: 'networkidle0'
});
// Wait for full hydration
await page.waitForSelector('[data-hydrated]');
// Analyze the RENDERED DOM
const seoData = await page.evaluate(() => {
return {
title: document.title,
meta: document.querySelector('meta...'),
h1: document.querySelector('h1'),
ogTags: document.querySelectorAll('...'),
internalLinks: document.querySelectorAll('a'),
// ... 35+ SEO checks
};
});
// Generate report with ELI5 explanations
return analyzeIssues(seoData, jsErrors);Traditional SEO crawlers don't execute JavaScript — they see your site's empty shell, not what users and Google actually see.
What they see
HTML Source (No JS)
<html>
<head>
<title></title>
<meta name="description" content="">
</head>
<body>
<div id="root"></div>
<script src="app.js"></script>
</body>
</html>What we see
Rendered DOM (After JS)
<html lang="en">
<head>
<title>My App | Dashboard</title>
<meta name="description"
content="Manage your...">
<meta property="og:title"...>
</head>
<body>
<h1>Welcome Back, User</h1>
<nav>...</nav>
<main>...</main>
</body>
</html>JSVisible analyzes 35+ critical SEO factors on every page
Missing & length
Presence & length
Missing & multiples
Skip detection
Duplicate prevention
Title, desc, image
Social previews
Accessibility
JSON-LD detection
Mobile-friendliness
Indexability
Security check
Accessibility
Performance
Page weight
Word count
Brand presence
Cross-page check
Orphan detection
All TiersConsole & exceptions
All TiersAlways improving
Schedule automatic scans to monitor your SEO. Pro users get weekly/monthly scans, Enterprise users unlock daily frequency for real-time monitoring.
If it runs JavaScript, we can scan it
Scan your JavaScript website in 1-2 minutes. No signup required for your first scan.
✓ Free forever tier · ✓ No credit card required · ✓ Fast results