DeepCrawl
Lumar •
Since 2013
Quick Actions
Official Docs
What is DeepCrawl?
DeepCrawl, now rebranded as Lumar, is an enterprise technical SEO platform that performs comprehensive website crawls to identify technical issues affecting search performance. The platform specializes in large-scale website analysis, capable of crawling millions of pages while providing actionable insights. Lumar helps SEO teams understand site architecture, identify crawl budget waste, find duplicate content, and monitor technical health. With features like JavaScript rendering and log file analysis integration, it provides a complete view of how search engines see websites.
User Agent String
Mozilla/5.0 (compatible; Deepcrawl/3.5; +https://www.lumar.io/)
How to Control DeepCrawl
Block Completely
To prevent DeepCrawl from accessing your entire website, add this to your robots.txt file:
# Block DeepCrawl
User-agent: Deepcrawl
Disallow: /
Block Specific Directories
To restrict access to certain parts of your site while allowing others:
User-agent: Deepcrawl
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: Deepcrawl
Crawl-delay: 10
How to Verify DeepCrawl
Verification Method:
Lumar/DeepCrawl crawler verification
Lumar/DeepCrawl crawler verification
Learn more in the official documentation.
Detection Patterns
Multiple ways to detect DeepCrawl in your application:
Basic Pattern
/DeepCrawl/i
Strict Pattern
/^Mozilla/5\.0 \(compatible; Deepcrawl/3\.5; \+https\://www\.lumar\.io/\)$/
Flexible Pattern
/DeepCrawl[\s\/]?[\d\.]*?/i
Vendor Match
/.*Lumar.*DeepCrawl/i
Implementation Examples
// PHP Detection for DeepCrawl
function detect_deepcrawl() {
$user_agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
$pattern = '/DeepCrawl/i';
if (preg_match($pattern, $user_agent)) {
// Log the detection
error_log('DeepCrawl 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($_SERVER['REQUEST_URI']) . '.html');
exit;
}
return true;
}
return false;
}
# Python/Flask Detection for DeepCrawl
import re
from flask import request, make_response
def detect_deepcrawl():
user_agent = request.headers.get('User-Agent', '')
pattern = r'DeepCrawl'
if re.search(pattern, user_agent, re.IGNORECASE):
# Create response with caching
response = make_response()
response.headers['Cache-Control'] = 'public, max-age=3600'
response.headers['X-Robots-Tag'] = 'noarchive'
return True
return False
# Django Middleware
class DeepCrawlMiddleware:
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
if self.detect_bot(request):
# Handle bot traffic
pass
return self.get_response(request)
// JavaScript/Node.js Detection for DeepCrawl
const express = require('express');
const app = express();
// Middleware to detect DeepCrawl
function detectDeepCrawl(req, res, next) {
const userAgent = req.headers['user-agent'] || '';
const pattern = /DeepCrawl/i;
if (pattern.test(userAgent)) {
// Log bot detection
console.log('DeepCrawl detected from IP:', req.ip);
// Set cache headers
res.set({
'Cache-Control': 'public, max-age=3600',
'X-Robots-Tag': 'noarchive'
});
// Mark request as bot
req.isBot = true;
req.botName = 'DeepCrawl';
}
next();
}
app.use(detectDeepCrawl);
# Apache .htaccess rules for DeepCrawl
# Block completely
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} DeepCrawl [NC]
RewriteRule .* - [F,L]
# Or redirect to a static version
RewriteCond %{HTTP_USER_AGENT} DeepCrawl [NC]
RewriteCond %{REQUEST_URI} !^/static/
RewriteRule ^(.*)$ /static/$1 [L]
# Or set environment variable for PHP
SetEnvIfNoCase User-Agent "DeepCrawl" is_bot=1
# Add cache headers for this bot
<If "%{HTTP_USER_AGENT} =~ /DeepCrawl/i">
Header set Cache-Control "public, max-age=3600"
Header set X-Robots-Tag "noarchive"
</If>
# Nginx configuration for DeepCrawl
# Map user agent to variable
map $http_user_agent $is_deepcrawl {
default 0;
~*DeepCrawl 1;
}
server {
# Block the bot completely
if ($is_deepcrawl) {
return 403;
}
# Or serve cached content
location / {
if ($is_deepcrawl) {
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_deepcrawl) {
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
User-agent: Deepcrawl
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: Deepcrawl
Crawl-delay: 10
Disallow: /wp-admin/
Disallow: /drafts/
Disallow: /preview/
Disallow: /*?replytocom=
Allow: /
SaaS/Application Configuration
User-agent: Deepcrawl
Disallow: /app/
Disallow: /api/
Disallow: /dashboard/
Disallow: /settings/
Allow: /
Allow: /pricing/
Allow: /features/
Allow: /docs/
Quick Reference
User Agent Match
DeepCrawl
Robots.txt Name
Deepcrawl
Category
seo
Respects robots.txt
Yes
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