My App

+ scripts That page will not rank. It doesn't matter how good your content is in the browser. This isn't an SEO optimization problem. It's a rendering failure. ## The Real Problem React apps ship a JavaScript shell. The server sends a near-empty HTML document, and all meaningful content appears after hydration — after the browser downloads, parses, and executes your JavaScript bundle. For humans with modern browsers, this works fine. For bots, this is a disaster. Search engine crawlers and AI bots evaluate what's in the initial HTML response. If that response is empty, your page is empty — regardless of what eventually renders in the browser. ## What's Actually Happening Here's what a typical React app sends to every request — bots included: My App

No content. No headings. No text. Just a shell waiting for JavaScript to fill it in. ## What bots actually evaluate - Initial HTML only — or partially rendered DOM - Without waiting for full JS execution - Without hydrating client-side state So your page becomes: - Text length: ~0–200 characters - No H1, no structured content - Triggers thin content classification and indexing suppression If you want to understand this in detail, read: [Why Google Can't See Your SPA](https://datajelly.com/blog/why-google-cant-see-your-spa) ## What Most Guides Get Wrong Most React SEO advice focuses on: - •Meta tags and Open Graph - •Sitemaps and canonicals - •robots.txt configuration None of that matters if your HTML has no content. None of it matters if your DOM isn't rendered server-side. We've seen pages with: - Perfect metadata - Zero visible content They don't rank. Because **Google indexes content, not your config.** ## What We See in Production These are real failure patterns we see repeatedly. Not edge cases — common problems. 1 ## "Indexed but empty" URL is indexed. Snippet is blank or irrelevant. Page gets zero impressions. 3.1 KB HTML size 82 chars Visible text That page is effectively empty to Google. 2 ### Script shell only DOM = scripts + empty root. No meaningful nodes. No text. No headings. "Script shell only" pages are treated as broken by search engines. This is a known failure condition we see across React, Vue, and Angular apps. 3 ### Content disappears after deploy This breaks in production when hydration fails, API requests time out, or JS bundles error. 45 KB Before deploy 6 KB After deploy That's an 87% drop. That page gets de-ranked within days. Use the [HTTP Debug Tool](https://datajelly.com/seo-tools/http-debug) to compare what bots see before and after deploys. 4 ### Partial rendering Title loads. Content does not. Common causes: - • Suspense boundaries that never resolve - • Client-only data fetching - • Slow API responses Result: Google indexes incomplete pages. Users search and find half-loaded content. 5 ### AI crawlers get nothing AI bots do not behave like browsers. They: - Do not hydrate JavaScript - Prefer structured content from static HTML - Extract from initial response only If your page is JS-dependent, your content never appears in AI answers. Read more: [AI SEO Guide](https://datajelly.com/guides/ai-seo) ## Solutions: What Actually Works There are only a few real solutions. Here's the honest comparison. ## SSR (Server-Side Rendering) Full content in every response Requires framework migration Adds latency and server cost Not how most Lovable or Vite apps are built. ## Static Generation Works for simple, static sites Breaks with dynamic content Doesn't scale with large route sets ## Prerendering (Snapshots) No app rewrite needed Stable output Requires snapshot pipeline + bot routing Read more: [Script-Based Prerendering Limits](https://datajelly.com/blog/script-based-prerendering-limits) ## Edge Proxy (What Actually Scales) No app changes required Serves full HTML to search bots Serves structured Markdown to AI bots Humans get normal React app This is how DataJelly works. [Learn how Edge Rendering works →](https://datajelly.com/products/edge) ## Practical Checklist: Verify Your Site Right Now Don't trust assumptions. Run these checks on your production URL. 1 ## Check raw HTML curl https://yoursite.com HTML < 5KB or no readable text → broken 2 ### Disable JavaScript Reload your page with JS disabled. If content disappears, bots won't see it either. 3 ### Measure visible text < 200 characters → thin content. < 500 words → weak page. These are the thresholds where we see ranking drops. 4 ### Compare before/after deploy Watch for HTML size drop > 50% or missing / <h1>. These are production-breaking signals. 5 ### Inspect rendered output Use Google Search Console → URL Inspection. Compare raw HTML vs rendered HTML. Any mismatch = problem. Want to automate this? Use the [DataJelly Bot Test Tool](https://datajelly.com/seo-tools/bot-test) to compare bot vs browser responses instantly. ## The Fix If you're using Lovable or any SPA, you have two real choices: Rewrite to SSR High effort. High complexity. Most teams don't finish this. Add a visibility layer Edge-based. No app changes. Fixes rendering at the source. ## DataJelly does exactly this: - Edge proxy serves full HTML snapshots to search bots - Generates AI Markdown for AI crawlers - Leaves your React app completely unchanged - Fixes incomplete HTML at the source — not in your codebase ## Quick Test: What Do Bots Actually See? ~30 seconds Most people guess. Don't. Run this test and look at the actual response your site returns to bots. 1 ### Fetch your page as Googlebot Use your terminal: `curl -A "Googlebot" https://yourdomain.com` Look for: - Real visible text (not just `<div id="root">`) - Meaningful content in the HTML - Page size (should not be tiny) 2 ### Compare bot vs browser Now test what a real browser gets: `curl -A "Mozilla/5.0" https://yourdomain.com` If these responses are different, Google is indexing a different page than your users see. Stop guessing — measure it. ### Real example: 253 words vs 13,547 We see this constantly. Here's a real example from production: Googlebot saw 253 words and 2 KB of HTML. A browser saw 13,547 words and 77.5 KB. Same URL — completely different content. [![Bot vs browser comparison showing 253 words for Googlebot vs 13,547 words for a rendered browser on the same URL](https://datajelly.com/assets/bot-comparison-proof-BSBvKXDf.png) ](https://datajelly.com/assets/bot-comparison-proof-BSBvKXDf.png) If your HTML doesn't contain the content, Google doesn't either. [Compare Googlebot vs browser on your site → HTTP Debug Tool](https://datajelly.com/seo-tools/http-debug) 3 ### Check for common failure signals We see this all the time in production: - HTML under ~1KB → usually empty shell - Visible text under ~200 characters → thin or missing content - Missing <title> or <h1> → weak or broken page - Large difference between bot vs browser HTML → rendering issue ### Use the DataJelly Visibility Test (Recommended) You can run this without touching curl. It shows you: - Raw HTML returned to bots (Googlebot, Bing, GPTBot, etc.) - Fully rendered browser version - Side-by-side differences in word count, HTML size, links, and content [Run Visibility Test — Free](https://datajelly.com/#visibility-test) ### What this test tells you (no guessing) After running this, you'll know: - Whether your HTML is actually indexable - Whether bots are seeing partial content - Whether rendering is breaking in production This is the difference between *"I think SEO is set up"* and **"I know what Google is indexing."** If you don't understand why this happens, read: [Why Google Can't See Your SPA](https://datajelly.com/blog/why-google-cant-see-your-spa) ### If this test fails You have three real options: SSR Works if you can keep it stable in production Prerendering Breaks with dynamic content and scale Edge Rendering Reflects real production output without app changes If you do nothing, you will not rank consistently. [Learn how Edge Rendering works →](https://datajelly.com/products/edge) This issue doesn't show up in Lighthouse. It shows up in rankings. [Run the Test](https://datajelly.com/#visibility-test) [Ask a Question](https://datajelly.com/contact) ## Final Takeaway React SEO isn't "hard." It's broken by default. If your HTML response is under 5KB, has fewer than 200 characters, and contains no meaningful content — you do not have an SEO problem. You have a rendering failure. And until bots consistently receive real content, nothing else you do will matter. ## Frequently Asked Questions ## Why is my React site not getting indexed? ## Does Google render JavaScript? ## How do I check if my site is rendering correctly for bots? ## Is SSR required for SEO? ## What is prerendering? ## How do AI crawlers read my site? ## Can Lovable sites rank on Google? ## Related Reading ### [Why Google Can't See Your SPA](https://datajelly.com/blog/why-google-cant-see-your-spa) The rendering gap explained — with diagrams showing what bots actually receive. ### [SPA SEO Checklist](https://datajelly.com/blog/spa-seo-checklist) 10 things you must fix before you expect traffic from a single-page application. ### [SPA SEO: The Complete Guide](https://datajelly.com/blog/spa-seo-complete-guide) Everything that breaks in JavaScript apps — and the three real fixes. ### [JavaScript SEO Guide](https://datajelly.com/guides/javascript-seo) Deep dive into how search engines handle JavaScript rendering. ### [Bot Test Tool](https://datajelly.com/seo-tools/bot-test) Compare what bots see vs what browsers render on any URL. ### [DataJelly Edge](https://datajelly.com/products/edge) How edge rendering fixes React SEO without changing your app. ## Structured Data (JSON-LD) ```json {"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Why is my React site not getting indexed?","acceptedAnswer":{"@type":"Answer","text":"Because your HTML response likely contains little to no content. Bots cannot index content that isn\u0027t present in the initial HTML. If your page ships a JavaScript shell with an empty \u003Cdiv id=\u0022root\u0022\u003E\u003C/div\u003E, that\u0027s what Google sees."}},{"@type":"Question","name":"Does Google render JavaScript?","acceptedAnswer":{"@type":"Answer","text":"Sometimes. Not reliably. Google uses a two-phase indexing system where raw HTML is processed first and JavaScript rendering is queued for later \u2014 sometimes hours or days later. You cannot depend on it for indexing critical content."}},{"@type":"Question","name":"How do I check if my site is rendering correctly for bots?","acceptedAnswer":{"@type":"Answer","text":"Use curl to inspect raw HTML, disable JavaScript in your browser, and compare with rendered output in Google Search Console. If content is missing in raw HTML, you have a problem."}},{"@type":"Question","name":"Is SSR required for SEO?","acceptedAnswer":{"@type":"Answer","text":"No. SSR is one option, but prerendering and edge proxy solutions can deliver fully rendered HTML to bots without rewriting your app."}},{"@type":"Question","name":"What is prerendering?","acceptedAnswer":{"@type":"Answer","text":"Prerendering generates fully rendered HTML snapshots of your pages and serves them to bots instead of JavaScript-based versions. It works without changing your app code."}},{"@type":"Question","name":"How do AI crawlers read my site?","acceptedAnswer":{"@type":"Answer","text":"AI crawlers extract structured content from HTML and often do not execute JavaScript. If your content requires JS to render, they return little or no usable content. Your site becomes invisible to AI answers."}},{"@type":"Question","name":"Can Lovable sites rank on Google?","acceptedAnswer":{"@type":"Answer","text":"Yes \u2014 but only if bots receive fully rendered HTML instead of empty JavaScript shells. Without a rendering or visibility layer, Lovable sites ship the same empty React shell as any other SPA."}}]} ``` ## Discovery & Navigation > Semantic links for AI agent traversal. * [DataJelly Edge](https://datajelly.com/products/edge) * [DataJelly Guard](https://datajelly.com/products/guard) * [Features](https://datajelly.com/#features) * [Pricing](https://datajelly.com/pricing) * [Visibility Test](https://datajelly.com/visibility-test) * [Prerendering](https://datajelly.com/prerendering) * [Prerender Alternative](https://datajelly.com/prerender-alternative) * [Lovable SEO](https://datajelly.com/lovable-seo) * [Visibility Layer Guide](https://datajelly.com/guides/visibility-layer) * [How Snapshots Work](https://datajelly.com/guides/how-snapshots-work) * [AI SEO Platform](https://datajelly.com/ai-seo-platform) * [Bot Detection](https://datajelly.com/bot-detection) * [Dashboard](https://dashboard.datajelly.com/) * [SEO Tools](https://datajelly.com/seo-tools) * [Visibility Test](https://datajelly.com/seo-tools/visibility-test) * [Site Audit](https://datajelly.com/seo-tools/site-audit) * [Bot Test](https://datajelly.com/seo-tools/bot-test) * [Social Card Preview](https://datajelly.com/seo-tools/social-card-preview) * [Robots.txt Tester](https://datajelly.com/seo-tools/robots-txt-tester) * [Sitemap Validator](https://datajelly.com/seo-tools/sitemap-validator) * [Structured Data Validator](https://datajelly.com/seo-tools/structured-data-validator) * [HTTP Header Checker](https://datajelly.com/seo-tools/http-header-checker) * [Page Speed Analyzer](https://datajelly.com/seo-tools/page-speed-analyzer) * [SSL Certificate Checker](https://datajelly.com/seo-tools/ssl-checker) * [DNS Records Viewer](https://datajelly.com/seo-tools/dns-records-viewer) * [Guides](https://datajelly.com/guides) * [Getting Started](https://datajelly.com/guides/getting-started) * [SPA SEO Guide](https://datajelly.com/guides/spa-seo) * [JavaScript SEO Guide](https://datajelly.com/guides/javascript-seo) * [SSR Guide](https://datajelly.com/guides/ssr) * [Search Engine Crawling Guide](https://datajelly.com/guides/search-engine-crawling) * [Lovable SEO Guide](https://datajelly.com/guides/lovable-seo) * [AI SEO Testing Guide](https://datajelly.com/guides/ai-seo) * [SEO Testing Guide](https://datajelly.com/guides/seo-testing) * [SERP Tracking Guide](https://datajelly.com/guides/serp-tracking) * [Security Testing Guide](https://datajelly.com/security) * [About Us](https://datajelly.com/about) * [Contact](https://datajelly.com/contact) * [Blog](https://datajelly.com/blog) * [Terms of Service](https://datajelly.com/terms)