PrerenderingThe SEO CDN for JavaScript Sites
Serve lightning-fast static HTML from the same data centers where Google's crawlers live. Near-zero latency. Full indexation. Rich snippets.
No code changes · No SSR rewrite · Works with any stack · Setup in 30 min
$0/month · Pay only for what you use · Starting at $0.00096/render
Proven Growth After Enabling Prerendering
Real Google Search Console data from production websites
Real Estate Agency
14,000+ property pages · Next.js + Lovable
Fitness App
2,000+ exercise lessons · Mixed stack
AI Agent SaaS
1,200 pages · 4 languages · WebFlow
News Portal
450,000+ pages · 30 languages · WordPress
Google Can't See Your JavaScript Pages
Here's what happens every time a bot visits your site
Bot visits your page
A search engine bot opens your URL
Server sends an empty page
Instead of content, it sends instructions: "run this JavaScript code to build the page"
Code needs to run
Your browser would run the code — but the bot can’t or won’t wait
Bot sees nothing
It records a blank page and moves on
Bot visits your page
A search engine bot opens your URL
Server sends an empty page
Instead of content, it sends instructions: "run this JavaScript code to build the page"
Code needs to run
Your browser would run the code — but the bot can’t or won’t wait
Bot sees nothing
It records a blank page and moves on
Your page is invisible in search results
Crawl budget wasted
Bots spend your crawl budget waiting for JS to render instead of indexing content
Pages skipped entirely
Complex SPAs/PWAs often return empty HTML shells that bots can't parse
No rich snippets
Without rendered meta-tags & structured data, you get plain blue links at best
Broken link previews
Shared links on Slack, WhatsApp, Facebook show blank cards — zero engagement
JavaScript Support by Crawlers (2026)
Which bots can actually see your JavaScript-rendered pages
| System | Type | Runs JS? | Details |
|---|---|---|---|
| 🔍 Google (Googlebot) | 🌐 Search Engine | Yes | Full Chrome (Evergreen). Renders everything, but JS content is indexed with delay (second wave).Prerendering recommended |
| 🔎 Bing (Bingbot) | 🌐 Search Engine | Yes | Can render JS but less reliably than Google. Heavy scripts often take longer to process.Prerendering recommended |
| 🟣 Yandex (YandexBot) | 🌐 Search Engine | Partial | Renders only key pages. Deeply nested JS content often drops from index.Prerendering recommended |
| 🦆 DuckDuckGo | 🌐 Search Engine | No | Relies on Bing’s index. Does not render JS on its own.Prerendering recommended |
| 🍎 Apple (Applebot) | 🌐 Search Engine | Partial | Renders some JS for Siri and Spotlight. Limited compared to Googlebot.Prerendering recommended |
| 🤖 OpenAI (GPTBot) | 🤖 AI Bot | No | Collects raw HTML only. If your content isn’t in source code, GPT models won’t learn it.Prerendering recommended |
| 💬 ChatGPT (Browse) | 🤖 AI Bot | No | When ChatGPT "visits a site", it fetches raw HTML (like curl). Does not wait for React to render.Prerendering recommended |
| 🔎 Perplexity AI | 🤖 AI Bot | No | Fetches static page snapshots extremely fast. Dynamic content is often invisible.Prerendering recommended |
| ✨ Google Gemini | 🤖 AI Bot | Yes | Has direct access to Google’s pre-rendered page cache from Search. |
| 🟠 Claude (ClaudeBot) | 🤖 AI Bot | No | Crawls raw HTML for training data. JS-rendered content is invisible.Prerendering recommended |
| ⚡ Grok / xAI | 🤖 AI Bot | No | Collects raw HTML. No JS execution engine.Prerendering recommended |
Serve Fully Rendered HTML to Every Bot
Bots get a fully rendered HTML version of your page. Users get your normal app.
Full HTML Snapshot
Rendered in a real browser. No empty shells.
Users See Nothing Different
Only bots get the snapshot. Your app stays untouched.
No Code Changes
Works as a lightweight proxy. Connect once — done.
Setup time: ~10 minutes
Three Simple Steps
Your visitors notice nothing. Bots get the full picture.
Delivered Instantly
The ready-made page is served from a server close to the bot — in milliseconds
Complete Page Copy
The snapshot includes everything: text, images, titles, and descriptions
Always Fresh
Pages are automatically updated on a schedule you control
What Happens After You Enable Prerendering
50%+ traffic boost
Pages that were invisible to Google start ranking. More pages indexed = more organic traffic. Results typically visible within days.
3—5× crawl efficiency
Bots process lightweight static HTML instead of executing heavy JS. Your crawl budget goes dramatically further.
Rich snippets enabled
Structured data, Open Graph, Twitter Cards delivered perfectly every time. Higher CTR from beautiful search results.
Core Web Vitals ↑
TTFB, LCP, INP, CLS metrics improve for bot-facing requests — directly impacting your Lighthouse & PageSpeed scores.
Perfect link previews
Every shared link on Slack, WhatsApp, Facebook, iMessage, Telegram shows rich image + title + description.
AI search visibility
ChatGPT, Gemini, Perplexity, Grok, Claude bots crawl like Google. If they can read your page, you show up in AI answers.
Visible to Every Bot That Matters
Prerendering serves optimized pages to 20+ search engines and AI crawlers
Search Engines
AI Assistants & Agents
Social & Messaging
Chat & Preview Bots
Works With Your Stack. Period.
Technology-agnostic · Zero lock-in · 0 dependencies
Frameworks
React
Vue
Angular
Svelte
Meteor
Next.js
Ember
BackboneServers & Platforms
Nginx
Apache
CloudFlare
Node.jsLanguages
JavaScript
TypeScript
PHP
Python
Ruby
GoES6 / ES7 Ready
ECMAScript 2015 & 2017 support built-in
AMP Compatible
.amp. and /amp/ URLs auto-detected
CSP Compatible
Works with Content-Security-Policy headers
Estimate Your Monthly Cost
No subscriptions · No commitments · Pay only for what you use
Quick estimate for your site type
3,000 renders/mo · $0.0041 per render
Pay-as-you-go prices · Pro plan
| Qty | Price | Per render |
|---|---|---|
| 1,000 | $8 | $0.008 |
| 10,000 | $28 | $0.0028 |
| 50,000 | $120 | $0.0024 |
| 100,000 | $200 | $0.002 |
| 500,000 | $900 | $0.0018 |
| 1,000,000 | $1,600 | $0.0016 |
| 5,000,000 | $6,400 | $0.00128 |
| 10,000,000 | $9,600 | $0.00096 |
Pro plan includes
Infrastructure
7 regional servers
Performance
4X throughput
Max pages / scan
2,500 pages
Cache TTL range
2 hours – 31 days
Wildcards & subdomains
Yes
Image loading in JS
Yes
Support
Email · 48h response
Custom integrations
No
Personalized invoicing
No
Desktop & mobile render
Yes
Every account includes 1,200 free renders · Auto-recache included
Prerendering FAQ
Common questions about pre-rendering for JavaScript sites
“Will this affect what my users see?”
No. Prerendering is a transparent proxy. Human visitors get your normal site. Only bots receive the pre-rendered static HTML.
“Is this considered cloaking by Google?”
No. Google officially recommends pre-rendering for JavaScript sites. You're serving the same content — just faster and pre-rendered.
“What if it breaks my site?”
Zero risk. It's middleware that only activates for bot traffic. Your app code doesn't change. Remove it anytime with no side effects.
“We already have SSR set up.”
Prerendering still helps — cached static delivery from co-located servers is faster than SSR rendering on every request. It also improves link previews and AI bot access.
“How do I know it's working?”
Real-time analytics dashboard shows every crawl, cache hit, status code, and response time. Plus use Google's Structured Data Testing Tool to verify.
“What about data freshness?”
Configurable TTL from 2 hours to 31 days. Auto-recache refreshes pages automatically on expiration. Instant purge anytime for major updates.
Live in 3 Steps · Under 30 Minutes
Choose your integration
NPM middleware · CloudFlare Worker · Nginx config · Meteor package — pick what fits your stack
Add the snippet
Copy-paste the middleware or config block. Set your auth token. That's the entire “migration.”
Watch traffic grow
Bots start getting served from co-located CDN immediately. Monitor everything in real-time analytics. Results in days, not months.
NPM
Express · Connect · vanilla Node
52.7 kB · 0 deps
CloudFlare
Worker · Copy-paste
Any stack
Nginx
Config only · No packages
Most efficient
Meteor
Atmosphere package
Drop-in ready
Built by Engineers. Trusted Since 2015.
Ostrio Systems, Inc
Registered company, operating since 2015
Open Source Core
BSD-3-Clause · 253 commits · Full TypeScript
5.0 Rating
AppSumo verified · GDPR compliant
Stop Losing Traffic to
Invisible Pages
53% traffic surge in 48 hours. Verified case study.
Set up in 30 minutes · $0/month · Pay only for renders · Cancel anytime