Google Images
Google Images is a search-engine crawler operated by Google. Its job is to find, fetch, and index web pages so they can be returned in organic search results.
Traffic is regular and bounded by your robots.txt. Allowing it is generally how your site stays discoverable through the corresponding search engine, blocking it almost always reduces visibility there.
For most sites, search-engine crawlers are still the largest source of bot traffic and the largest source of human visitors that follow.
See Google Images on your own site
Match the User-Agent header on incoming requests against the pattern below.
regex
Verify by IP
For higher confidence, also verify the source IP against the operator's published ranges. UA strings can be spoofed; IP ownership is harder to fake.
Renders JavaScript
No
IP verification
Published IP ranges
Crawl frequency
Continuous
Honors robots.txt
Yes
Honors Crawl-delay
Yes
Google runs 103 bots in total. Each one is a separate user-agent so you can allow or block them independently.
Link Unfurler
25- Google Feed Fetcher
- Google Image Proxy
- Google Publisher Center
- Google Web Preview
- Google-AdWords-Express
- Google-PageRenderer
- Google-Read-Aloud
- GoogleDocs
- GoogleImageProxy
- GoogleProducer
- Gmail Image Proxy
- Google Calendar Importer
- Google Page Renderer
- Google Web Snippet
- Google API
- Google Cloud Scheduler
- Google-Document-Conversion
- Google Sheets
- Google Slides
- Google Docs
- Google Area 120 Privacy Policy Fetcher
- Chrome Privacy Preserving Prefetch Proxy
- Google Cloud Function
- GoogleApps-DocumentScanner
- GoogleStackdriverMonitoring
Search Engine
14DevOps & Monitoring
13- Chrome-Lighthouse
- Google Inspection Tool
- Google Schema Markup Testing Tool
- Google Trust Services (DCV Check)
- Google-Structured-Data-Testing-Tool
- GoogleAssociationService
- ProjectShield Url Check
- Google Read Aloud
- Google Search Console
- Google Page Speed Insights
- Google Partner Monitoring
- Google Structured Data Testing Tool
- Google Stackdriver Monitoring
Ads Network Bot
11Training Crawler
9Agentic Browser
8Security Scanner
7SEO Crawler
4Brand Intelligence
3Shopping Bot
3Live-Fetch AI
2Ad Verification
2AI Coding Tool
1Agentic Commerce
1Should I let Google Images through?
In most cases, yes. Blocking traditional search crawlers reduces organic-search visibility. Allowing is the default for almost all sites. If volume gets noisy, rate-limit it before you block it outright.
Does blocking Google Images affect my Google rankings?
Only on Google Google Images feeds. Each search engine runs its own crawler, so blocking Google Images only removes you from that one index. Your visibility on Google, Bing, or anything else is untouched.
How do I confirm a request is really from Google Images?
Two checks. The User-Agent header should match a known Google Images string, and the request's source IP should fall inside Google's published ranges. The User-Agent alone is trivially spoofable, so the IP check is what gives you confidence. Google publishes the ranges so you can validate at the CDN or edge.
What happens to my traffic if I block Google Images?
Your pages drop out of Google's index, which means losing the organic share you get from that engine. Not catastrophic if Google is a minor player, much more painful if it's a meaningful source of your traffic. Check your analytics for Google's actual referral share before deciding.
How is Google Images different from Google's other bots?
Google splits work across multiple user-agents so site owners can decide on each one independently. Training crawlers, live-fetch agents, search indexers, and agentic browsers each get their own name. Worth scanning the rest of the Google family above to see which ones actually matter for your site.
What's the cleanest way to control Google Images?
Two layers. Robots.txt for the polite crawlers that read it, and rules at your CDN or edge for the ones that don't. Rankly's Agent Experience handles both from a single config, so you can allow, block, rate-limit, or serve a stripped-down version per bot. Agent Analytics handles the observation half so you know which bots are actually worth a rule.
Verify everything above against the operator's own documentation.