Why JavaScript Apps Struggle with SEO
Modern web apps built with React, Vue, or AI builders render content dynamically in the browser. When a search engine bot visits your site, here’s what happens:Prerendering: The Google-Recommended Solution
Hado SEO implements prerendering at the edge. We serve different content based on who’s visiting:Bot Detection: Search Engines, AI Crawlers & Social Media
Our edge network analyzes incoming requests to identify different types of visitors:Search Engine Crawlers
Search Engine Crawlers
- Googlebot - Google’s main crawler
- Bingbot - Microsoft Bing
- DuckDuckBot - DuckDuckGo
- YandexBot - Yandex search
- Baiduspider - Baidu (China)
- Applebot - Apple search
- Amazonbot - Amazon/Alexa
- Slurp - Yahoo search
AI Search & LLM Crawlers
AI Search & LLM Crawlers
- GPTBot - OpenAI’s crawler for ChatGPT
- OAI-SearchBot - OpenAI Search
- ChatGPT-User - ChatGPT browsing
- ClaudeBot - Anthropic’s crawler
- PerplexityBot - Perplexity AI search
- Google-Extended - Google Gemini/Bard training
- Applebot-Extended - Apple AI features
- Bytespider - ByteDance/TikTok AI
- YouBot - You.com AI search
- CCBot - Common Crawl
- Cohere - Cohere AI
- Diffbot - Knowledge graph extraction
SEO Tools
SEO Tools
- AhrefsBot - Ahrefs crawler
- SemrushBot - Semrush crawler
- MJ12bot - Majestic SEO
- DotBot - Moz/SEOmoz
- Rogerbot - Moz crawler
- Screaming Frog - SEO spider
- DataForSEOBot - DataForSEO crawler
What Gets Pre-rendered for Search Engines
When a bot visits your site through Hado SEO, we render and serve:Smart Caching & Automatic Page Refresh
Pre-rendered pages are cached at our global edge network for fast delivery. Hado SEO automatically monitors your sitemap and intelligently decides what to render:Smart Sitemap Sync
Hado SEO periodically re-reads your sitemap and runs a smart diff to catch structural changes:Stale-While-Revalidate Freshness
Every cached page carries a freshness window. Bots are always served instantly from cache — when a page is past its window, we serve the cached copy anyway and queue a background re-render, so the next visit gets fresh HTML. Bots never wait on a render. How often pages refresh is configurable:- Plan default — Starter refreshes every 3 days; Pro, Growth, and Agency refresh daily.
- Domain setting — slow the site-wide default down (e.g. Weekly) from Domain Settings → Cache Freshness.
- Cache rules (Pro and above) — per-path patterns like
/blog/*that set different refresh frequencies for different sections of your site.
Full Manual Refresh
You can trigger a full manual recrawl once per month from Domain Settings in your dashboard. This is designed for:- Full site redesigns
- Major content or layout updates
- Significant structural changes
Bulk Refresh
Need to refresh specific pages without a full recrawl? Use Bulk Refresh from your dashboard to re-render up to 100 pages at a time. This is ideal for:- Updating a batch of product pages after a price change
- Refreshing blog posts after edits
- Re-rendering key landing pages after A/B test changes
How Traffic Flows Through Hado SEO
How it works:- All traffic flows through Hado’s edge network via DNS
- Bot detection analyzes the User-Agent header
- Search bots get pre-rendered, cached HTML
- Human visitors pass through with zero added latency
Why Choose Prerendering over SSR
No Latency for Users
Human visitors bypass prerendering entirely. Your app loads exactly as
before with zero added latency.
Global Edge Network
Our infrastructure spans multiple global points of presence for sub-250ms
response times worldwide.
Always Fresh Content
Pages re-render automatically in the background as bots visit, at a
frequency you control. Bulk refresh and monthly manual recrawl available
when you need them.
Complete Control
Serves static HTML to search engines and AI crawlers to boost technical
on-page SEO
Hado SEO vs Prerender.io vs SSR Migration
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