Baiduspider
Baidu •
Since 2000
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Official Docs
What is Baiduspider?
Baiduspider is the web crawler for Baidu, China's dominant search engine with over 70% market share in the country. The crawler is optimized for Chinese language content and follows Chinese internet regulations while indexing web pages. Baiduspider supports both simplified and traditional Chinese content, making it essential for reaching Chinese-speaking audiences globally. The bot respects robots.txt and has evolved to handle JavaScript-heavy sites and mobile content. For businesses targeting the Chinese market, ensuring Baiduspider can properly crawl and index their content is crucial for online visibility.
User Agent String
Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)
How to Control Baiduspider
Block Completely
To prevent Baiduspider from accessing your entire website, add this to your robots.txt file:
# Block Baiduspider
User-agent: Baiduspider
Disallow: /
Block Specific Directories
To restrict access to certain parts of your site while allowing others:
User-agent: Baiduspider
Disallow: /admin/
Disallow: /private/
Disallow: /wp-admin/
Allow: /public/
Set Crawl Delay
To slow down the crawl rate (note: not all bots respect this directive):
User-agent: Baiduspider
Crawl-delay: 10
How to Verify Baiduspider
Verification Method:
Check IP ranges from Baidu's published list
Check IP ranges from Baidu's published list
Learn more in the official documentation.
Detection Patterns
Multiple ways to detect Baiduspider in your application:
Basic Pattern
/Baiduspider/iStrict Pattern
/^Mozilla/5\.0 \(compatible; Baiduspider/2\.0; \+http\://www\.baidu\.com/search/spider\.html\)$/Flexible Pattern
/Baiduspider[\s\/]?[\d\.]*?/iVendor Match
/.*Baidu.*Baiduspider/iImplementation Examples
// PHP Detection for Baiduspider
function detect_baiduspider() {
$user_agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
$pattern = '/Baiduspider/i';
if (preg_match($pattern, $user_agent)) {
// Log the detection
error_log('Baiduspider detected from IP: ' . $_SERVER['REMOTE_ADDR']);
// Set cache headers
header('Cache-Control: public, max-age=3600');
header('X-Robots-Tag: noarchive');
// Optional: Serve cached version
if (file_exists('cache/' . md5($_SERVER['REQUEST_URI']) . '.html')) {
readfile('cache/' . md5($_SERVER['REQUEST_URI']) . '.html');
exit;
}
return true;
}
return false;
}
# Python/Flask Detection for Baiduspider
import re
from flask import request, make_responsedef detect_baiduspider():
user_agent = request.headers.get('User-Agent', '')
pattern = r'Baiduspider'
if re.search(pattern, user_agent, re.IGNORECASE):
# Create response with caching
response = make_response()
response.headers['Cache-Control'] = 'public, max-age=3600'
response.headers['X-Robots-Tag'] = 'noarchive'
return True
return False# Django Middleware
class BaiduspiderMiddleware:
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
if self.detect_bot(request):
# Handle bot traffic
pass
return self.get_response(request)
// JavaScript/Node.js Detection for Baiduspider
const express = require('express');
const app = express();// Middleware to detect Baiduspider
function detectBaiduspider(req, res, next) {
const userAgent = req.headers['user-agent'] || '';
const pattern = /Baiduspider/i;
if (pattern.test(userAgent)) {
// Log bot detection
console.log('Baiduspider detected from IP:', req.ip);
// Set cache headers
res.set({
'Cache-Control': 'public, max-age=3600',
'X-Robots-Tag': 'noarchive'
});
// Mark request as bot
req.isBot = true;
req.botName = 'Baiduspider';
}
next();
}app.use(detectBaiduspider);
# Apache .htaccess rules for Baiduspider# Block completely
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Baiduspider [NC]
RewriteRule .* - [F,L]# Or redirect to a static version
RewriteCond %{HTTP_USER_AGENT} Baiduspider [NC]
RewriteCond %{REQUEST_URI} !^/static/
RewriteRule ^(.*)$ /static/$1 [L]# Or set environment variable for PHP
SetEnvIfNoCase User-Agent "Baiduspider" is_bot=1# Add cache headers for this bot
<If "%{HTTP_USER_AGENT} =~ /Baiduspider/i">
Header set Cache-Control "public, max-age=3600"
Header set X-Robots-Tag "noarchive"
</If>
# Nginx configuration for Baiduspider# Map user agent to variable
map $http_user_agent $is_baiduspider {
default 0;
~*Baiduspider 1;
}server {
# Block the bot completely
if ($is_baiduspider) {
return 403;
}
# Or serve cached content
location / {
if ($is_baiduspider) {
root /var/www/cached;
try_files $uri $uri.html $uri/index.html @backend;
}
try_files $uri @backend;
}
# Add headers for bot requests
location @backend {
if ($is_baiduspider) {
add_header Cache-Control "public, max-age=3600";
add_header X-Robots-Tag "noarchive";
}
proxy_pass http://backend;
}
}
Should You Block This Bot?
Recommendations based on your website type:
| Site Type | Recommendation | Reasoning |
|---|---|---|
| E-commerce | Allow | Essential for product visibility in search results |
| Blog/News | Allow | Increases content reach and discoverability |
| SaaS Application | Block | No benefit for application interfaces; preserve resources |
| Documentation | Allow | Improves documentation discoverability for developers |
| Corporate Site | Allow | Allow for public pages, block sensitive areas like intranets |
Advanced robots.txt Configurations
E-commerce Site Configuration
User-agent: Baiduspider
Crawl-delay: 5
Disallow: /cart/
Disallow: /checkout/
Disallow: /my-account/
Disallow: /api/
Disallow: /*?sort=
Disallow: /*?filter=
Disallow: /*&page=
Allow: /products/
Allow: /categories/
Sitemap: https://example.com/sitemap.xml
Publishing/Blog Configuration
User-agent: Baiduspider
Crawl-delay: 10
Disallow: /wp-admin/
Disallow: /drafts/
Disallow: /preview/
Disallow: /*?replytocom=
Allow: /
SaaS/Application Configuration
User-agent: Baiduspider
Disallow: /app/
Disallow: /api/
Disallow: /dashboard/
Disallow: /settings/
Allow: /
Allow: /pricing/
Allow: /features/
Allow: /docs/
Quick Reference
User Agent Match
BaiduspiderRobots.txt Name
BaiduspiderCategory
searchRespects robots.txt
Yes
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