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SeznamHomepageCrawler

Operated by Seznam

Quick Facts

User-Agent:SeznamHomepageCrawler
Category:Search Engines
Operator:Seznam
Safety:Safe
Blocking Impact:Critical — Blocking removes you from search results
SEO Impact Score:10/10

What is SeznamHomepageCrawler?

A specialized bot used to fetch snippets, media, articles specifically for Seznam.cz, the most popular search engine in Czechia.

A specialized bot used to fetch snippets, media, articles specifically for Seznam.cz, the most popular search engine in Czechia. SeznamHomepageCrawler is a production-grade search engine crawler operated by Seznam. It uses a distributed crawl infrastructure that respects crawl-delay directives, follows RFC 9309 (robots.txt) spec, and processes Sitemaps to prioritise fresh content. The user-agent string SeznamHomepageCrawler must be whitelisted if your site uses rate-limiting or WAF rules. Blocking impact is Critical — Blocking removes you from search results.

What happens if you block SeznamHomepageCrawler?

⛔ **Critical Impact** — Blocking SeznamHomepageCrawler will stop Seznam from crawling and indexing your pages. Within days or weeks you may see pages drop out of Seznam's search index entirely, resulting in a significant loss of organic search traffic. This is the most severe possible SEO consequence. Only do this intentionally, for example if you are migrating to a different search engine or decommissioning a domain. If you accidentally blocked SeznamHomepageCrawler, remove the rule immediately and request re-indexing via Seznam's webmaster tools.
Never block — it will remove your site from major search results.

How to block SeznamHomepageCrawler with robots.txt

<code>User-agent: SeznamHomepageCrawler</code> — Matching is case-insensitive. Robots.txt is fetched from the root of each subdomain separately.

Block completely (robots.txt)
User-agent: SeznamHomepageCrawler Disallow: /
Allow all (robots.txt)
User-agent: SeznamHomepageCrawler Allow: /
Block private only (robots.txt)
User-agent: SeznamHomepageCrawler Disallow: /private/ Disallow: /api/ Disallow: /admin/ Allow: /
Nginx server block
# Nginx: Hard-block SeznamHomepageCrawler if ($http_user_agent ~* "SeznamHomepageCrawler") { return 403 "Bot blocked"; }
Apache .htaccess
# Apache: Hard-block SeznamHomepageCrawler SetEnvIfNoCase User-Agent "SeznamHomepageCrawler" bad_bot Order Allow,Deny Allow from all Deny from env=bad_bot
Meta robots tag
<meta name="robots" content="noindex, nofollow">
X-Robots-Tag header
X-Robots-Tag: noindex, nofollow

Is SeznamHomepageCrawler safe to allow?

Yes, SeznamHomepageCrawler is a **safe and legitimate** crawler. It is operated by Seznam, which publicly documents its crawler at an official URL and follows the Robots Exclusion Protocol (RFC 9309). The user-agent string SeznamHomepageCrawler is verifiable via reverse-DNS lookup on the crawling IP addresses. You can safely allow it unless you have a specific reason to block (e.g., AI training opt-out or SEO tool visibility).
Verify by reverse-DNS lookup: legitimate SeznamHomepageCrawler requests resolve to seznam's domain.

What does SeznamHomepageCrawler do?

Understanding SeznamHomepageCrawler's purpose helps you decide whether to allow or block it.

Frequently Asked Questions

What is the official user-agent string for SeznamHomepageCrawler?
The official user-agent string for SeznamHomepageCrawler is: SeznamHomepageCrawler. This is the exact string you must use in robots.txt, Nginx, Apache, or Cloudflare firewall rules to target this bot. User-agent matching in robots.txt is case-insensitive, but the string must be spelled correctly. You can verify that a request genuinely comes from SeznamHomepageCrawler by performing a reverse-DNS lookup on the source IP — legitimate bots resolve back to their operator's domain.
Is SeznamHomepageCrawler safe?
Yes, SeznamHomepageCrawler is a **safe and legitimate** crawler. It is operated by Seznam, which publicly documents its crawler at an official URL and follows the Robots Exclusion Protocol (RFC 9309). The user-agent string SeznamHomepageCrawler is verifiable via reverse-DNS lookup on the crawling IP addresses. You can safely allow it unless you have a specific reason to block (e.g., AI training opt-out or SEO tool visibility).
Will blocking SeznamHomepageCrawler hurt my SEO?
⛔ **Critical Impact** — Blocking SeznamHomepageCrawler will stop Seznam from crawling and indexing your pages. Within days or weeks you may see pages drop out of Seznam's search index entirely, resulting in a significant loss of organic search traffic. This is the most severe possible SEO consequence. Only do this intentionally, for example if you are migrating to a different search engine or decommissioning a domain. If you accidentally blocked SeznamHomepageCrawler, remove the rule immediately and request re-indexing via Seznam's webmaster tools.
How do I block SeznamHomepageCrawler in robots.txt?
Add the following lines to your /robots.txt file:
User-agent: SeznamHomepageCrawler
Disallow: /
This instructs SeznamHomepageCrawler not to crawl any path on your site. The Disallow: / directive covers the entire domain including subfolders. To only block specific sections, replace / with the path (e.g., Disallow: /blog/). Note: robots.txt is publicly readable — any bot or human can inspect it at yourdomain.com/robots.txt.
Does SeznamHomepageCrawler respect robots.txt?
Yes — SeznamHomepageCrawler is a well-behaved bot operated by Seznam. It fetches and parses /robots.txt before crawling any page, following RFC 9309.
How do I verify if SeznamHomepageCrawler is crawling my site?
Search your web server access logs for the string SeznamHomepageCrawler (case-insensitive grep: grep -i "SeznamHomepageCrawler" /var/log/nginx/access.log). You can also check Google Search Console → Coverage → Crawl Stats for Googlebot variants. For SeznamHomepageCrawler specifically, filter by user-agent in your log analysis tool (GoAccess, AWStats, etc.).
What is the crawl frequency of SeznamHomepageCrawler?
Critical-impact search crawlers like SeznamHomepageCrawler typically crawl popular pages daily and less popular pages weekly. You can manage crawl rate via the crawl-delay directive or via the search console.
Can I block SeznamHomepageCrawler from specific pages only?
Yes. Instead of a global Disallow: / you can restrict SeznamHomepageCrawler to specific paths:
User-agent: SeznamHomepageCrawler
Disallow: /private/
Disallow: /staging/
Allow: /
This allows SeznamHomepageCrawler everywhere except the listed paths. Path matching in robots.txt uses prefix matching — Disallow: /private/ blocks /private/page.html but NOT /public/private/.
How do I check if SeznamHomepageCrawler is blocked by my robots.txt?
Use Google's robots.txt Tester in Search Console, or a third-party checker to simulate a SeznamHomepageCrawler request. You can also manually check by opening https://aicrawlercheck.com/robots.txt and scanning for SeznamHomepageCrawler entries. If a block exists, immediately test it against your most important URLs using the Google Search Console URL Inspection tool.
My site is blocked by SeznamHomepageCrawler in Search Console — what do I do?
1. Open yourdomain.com/robots.txt and look for any User-agent: SeznamHomepageCrawler or User-agent: * Disallow rules covering your key pages. 2. Remove or restrict the blocking rules. 3. Validate via Google Search Console → robots.txt Tester. 4. Request re-indexing using the URL Inspection tool. 5. Wait 1-2 weeks for re-crawl. Monitor Coverage report for recovery.

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