Chrome-Lighthouse

Neutral Block: Depends Verified robots.txt: No

Chrome-Lighthouse is an automated, open-source tool for auditing web page quality and does not operate as a traditional web crawler. It runs a series of audits against a given page to generate a report on performance and accessibility.

Key facts

Operator: Google
Family: Google
Purpose: Site Owner Fetch
User-Agent: Chrome-Lighthouse
Should you block it?: Depends
Verified: Yes
Respects robots.txt: No
Identity type: Unknown
Confidence: Medium
Last verified: 2026-04-01
Last checked: 2026-04-01

Bot details

Identity

User-Agent: Chrome-Lighthouse
robots.txt token: Chrome-Lighthouse
HTTP user-agent: Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5 Build/MRA58N) AppleWebKit/537.36(KHTML, like Gecko) Chrome/69.0.3464.0 Mobile Safari/537.36 Chrome-Lighthouse

Ownership

Operator: Google
Family: Google
Type: Scraper
Purpose: Site Owner Fetch

Verification and trust

Source type: Unknown
Confidence: Medium
Last verified: 2026-04-01
Last checked: 2026-04-01
Verification: Validate the identifying user-agent or signature against the operator documentation before creating hard allow rules.
Operator URL: https://developers.google.com/web/tools/lighthouse
Source URL: https://developers.google.com/web/tools/lighthouse
Spoofing risk: User-agent strings can be spoofed. For allow-listing or low-friction rules, pair the published identifier with operator documentation or cryptographic verification when available.

Blocking and detection

Robots

User-agent: Chrome-Lighthouse
Disallow: /

Cloudflare

(http.user_agent contains "Chrome-Lighthouse")

Advanced server rules

Apache

RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Chrome\-Lighthouse [NC]
RewriteRule ^ - [F,L]

Nginx

if ($http_user_agent ~* "Chrome-Lighthouse") { return 403; }

Notes

It runs a series of audits against a given page to generate a report on performance and accessibility.

Known user-agent patterns: Chrome-Lighthouse Known user-agent strings: Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5 Build/MRA58N) AppleWebKit/537.36(KHTML, like Gecko) Chrome/69.0.3464.0 Mobile Safari/537.36 Chrome-Lighthouse Robots.txt handling in the directory: no.

Operator documentation: https://developers.google.com/web/tools/lighthouse

Evidence and source

Validate the identifying user-agent or signature against the operator documentation before creating hard allow rules.
Chrome-Lighthouse is an automated, open-source tool for auditing web page quality and does not operate as a traditional web crawler. It runs a series of audits against a given page to generate a report on performance and accessibility.
User-agent strings can be spoofed. For allow-listing or low-friction rules, pair the published identifier with operator documentation or cryptographic verification when available.

https://developers.google.com/web/tools/lighthouse