What is SiteImprove?
Siteimprove is a comprehensive digital optimization platform that helps organizations improve their digital presence through quality assurance, accessibility compliance, SEO, and analytics. Their crawler performs deep analysis of websites to identify issues with accessibility (WCAG compliance), SEO problems, broken links, misspellings, and policy compliance. Particularly strong in the accessibility space, Siteimprove helps organizations meet legal requirements and improve user experience for people with disabilities. The platform is popular among government agencies, educational institutions, and enterprises prioritizing digital accessibility.
User Agent String
Mozilla/5.0 (compatible; SITEIMPROVE)
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How to Control SiteImprove
Block Completely
To prevent SiteImprove from accessing your entire website, add this to your robots.txt file:
User-agent: SITEIMPROVE
Disallow: /
Block Specific Directories
To restrict access to certain parts of your site while allowing others:
User-agent: SITEIMPROVE
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: SITEIMPROVE
Crawl-delay: 10
How to Verify SiteImprove
Verification Method:
Siteimprove user agent identification
Learn more in the official documentation .
Detection Patterns
Multiple ways to detect SiteImprove in your application:
Basic Pattern
/SiteImprove/i
Strict Pattern
/^Mozilla/5\.0 \(compatible; SITEIMPROVE\)$/
Flexible Pattern
/SiteImprove[\s\/]?[\d\.]*?/i
Vendor Match
/.*Siteimprove.*SiteImprove/i
Implementation Examples
PHP
Python
JavaScript
.htaccess
Nginx
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function detect_siteimprove() {
$user_agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
$pattern = '/SiteImprove/i';
if (preg_match($pattern, $user_agent)) {
// Log the detection
error_log('SiteImprove 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($_SERVER['REQUEST_URI']) . '.html');
exit;
}
return true;
}
return false;
}
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import re
from flask import request, make_response
def detect_siteimprove():
user_agent = request.headers.get('User-Agent', '')
pattern = r'SiteImprove'
if re.search(pattern, user_agent, re.IGNORECASE):
# Create response with caching
response = make_response()
response.headers['Cache-Control'] = 'public, max-age=3600'
response.headers['X-Robots-Tag'] = 'noarchive'
return True
return False
class SiteImproveMiddleware:
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
if self.detect_bot(request):
# Handle bot traffic
pass
return self.get_response(request)
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const express = require('express');
const app = express();
// Middleware to detect SiteImprove
function detectSiteImprove(req, res, next) {
const userAgent = req.headers['user-agent'] || '';
const pattern = /SiteImprove/i;
if (pattern.test(userAgent)) {
// Log bot detection
console.log('SiteImprove detected from IP:', req.ip);
// Set cache headers
res.set({
'Cache-Control': 'public, max-age=3600',
'X-Robots-Tag': 'noarchive'
});
// Mark request as bot
req.isBot = true;
req.botName = 'SiteImprove';
}
next();
}
app.use(detectSiteImprove);
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RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} SiteImprove [NC]
RewriteRule .* - [F,L]
RewriteCond %{HTTP_USER_AGENT} SiteImprove [NC]
RewriteCond %{REQUEST_URI} !^/static/
RewriteRule ^(.*)$ /static/$1 [L]
SetEnvIfNoCase User-Agent "SiteImprove" is_bot=1
<If "%{HTTP_USER_AGENT} =~ /SiteImprove/i">
Header set Cache-Control "public, max-age=3600"
Header set X-Robots-Tag "noarchive"
</If>
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map $http_user_agent $is_siteimprove {
default 0;
~*SiteImprove 1;
}
server {
if ($is_siteimprove) {
return 403;
}
location / {
if ($is_siteimprove) {
root /var/www/cached;
try_files $uri $uri.html $uri/index.html @backend;
}
try_files $uri @backend;
}
location @backend {
if ($is_siteimprove) {
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
Optional
Evaluate based on bandwidth usage vs. benefits
Blog/News
Allow
Increases content reach and discoverability
SaaS Application
Block
No benefit for application interfaces; preserve resources
Documentation
Selective
Allow for public docs, block for internal docs
Corporate Site
Limit
Allow for public pages, block sensitive areas like intranets
Advanced robots.txt Configurations
E-commerce Site Configuration
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User-agent: SITEIMPROVE
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
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User-agent: SITEIMPROVE
Crawl-delay: 10
Disallow: /wp-admin/
Disallow: /drafts/
Disallow: /preview/
Disallow: /*?replytocom=
Allow: /
SaaS/Application Configuration
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User-agent: SITEIMPROVE
Disallow: /app/
Disallow: /api/
Disallow: /dashboard/
Disallow: /settings/
Allow: /
Allow: /pricing/
Allow: /features/
Allow: /docs/
Quick Reference
User Agent Match
SiteImprove
Robots.txt Name
SITEIMPROVE
Category
seo, monitoring
Respects robots.txt
Yes