# रीडायरेक्ट्स और 404 हैंडलिंग — डेवलपर्स के लिए SEO: Technical SEO और Core Web Vitals

Source: https://www.skillbyai.com/hi/seo-developers/seo-redirects

> 301 redirects aur sahi 404 responses se moved aur deleted pages handle karein, aur crawl budget barbaad karne wali redirect chains se bachein.

## रीडायरेक्ट स्थिति कोड

**301** (Permanent) search engines ko batata hai ki page hamesha ke liye move ho gaya; link juice naye URL par transfer hota hai. **302** (Temporary) ka matlab hai ki purana page wapas aa sakta hai; juice poori tarah transfer nahi hota. Permanent moves ke liye hamesha **301** use karein.

## रीडायरेक्ट उदाहरण

Behtar performance ke liye redirects server level par implement karein. Redirect chains (A→B→C) slow hoti hain; inse bachein.

```nginx
# Nginx example: Permanent 301 redirect
server {
    listen 80;
    server_name old-domain.com;
    
    # Redirect entire domain
    return 301 https://new-domain.com$request_uri;
}

# Redirect single page
server {
    listen 80;
    server_name example.com;
    
    # Old page moved
    location = /old-article.html {
        return 301 https://example.com/blog/new-article/;
    }
    
    # Remove trailing slash
    location ~ ^(.*)/$
    {
        return 301 $scheme://$server_name$1;
    }
}
```

## 404 पेजों को हैंडल करना

Jo pages exist nahi karte unke liye sacha 404 status code return karein. Homepage par redirect na karein aur 200 OK na bhejein; crawlers sochenge ki page maujood hai. Navigation aur suggestions ke saath ek helpful 404 page banayein.

## Canonicalization बनाम रीडायरेक्ट्स

Canonical tags duplicate content handle karte hain; redirects moved pages handle karte hain. Same content ke variants (www vs non-www) ke liye canonical, permanent page moves ke liye redirects use karein.

## रीडायरेक्ट चेन की निगरानी करें

A→B→C chains crawlers ko slow karti hain. Quarterly apne redirects check karein aur chains fix karein. curl ya DevTools se test karein ki responses HTTP 301/302 hain, meta refresh nahi.