01 · Operator
Who operates Google-Structured-Data-Testing-Tool
- Company
- Type
- SEO tool crawler
- Official docs
- developers.google.com
02 · Behavior
What Google-Structured-Data-Testing-Tool does
The tool fetched a URL that a user entered and checked its structured data markup. Requests were triggered by users, not by scheduled crawling. Its old URL now redirects to Google's structured data documentation.
03 · Impact
Why Google-Structured-Data-Testing-Tool matters for your site
If you allow it
- Requests were made when someone tested your markup
- Load was one page per test
If you block it
- The tool's old URL now redirects, so current requests with this UA may be spoofed
04 · Allow
How to allow Google-Structured-Data-Testing-Tool
robots.txt
# Google-Structured-Data-Testing-Tool has no documented robots.txt token and does not read robots.txt.
# Use a Cloudflare, nginx or Apache rule instead.Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "Google-Structured-Data-Testing-Tool")
Action: Skip › All Super Bot Fight Mode rules
# Also check Security › Bots: "Block AI bots" can block it regardless of robots.txt.WordPress
# Google-Structured-Data-Testing-Tool has no documented robots.txt token and does not read robots.txt.
# Use a Cloudflare, nginx or Apache rule instead.nginx
# nginx serves every user agent by default.
# Make sure no rule like this blocks it:
# if ($http_user_agent ~* "Google\-Structured\-Data\-Testing\-Tool") { return 403; }Apache
# Apache serves every user agent by default.
# Make sure .htaccess has no rule like this:
# RewriteCond %{HTTP_USER_AGENT} Google\-Structured\-Data\-Testing\-Tool [NC]
# RewriteRule .* - [F,L]05 · Block
How to block Google-Structured-Data-Testing-Tool
Start with robots.txt. If Google-Structured-Data-Testing-Tool keeps showing up in your logs, block it at your CDN or web server.
robots.txt
# Google-Structured-Data-Testing-Tool has no documented robots.txt token and does not read robots.txt.
# Use a Cloudflare, nginx or Apache rule instead.Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "Google-Structured-Data-Testing-Tool")
Action: BlockWordPress
# Google-Structured-Data-Testing-Tool has no documented robots.txt token and does not read robots.txt.
# Use a Cloudflare, nginx or Apache rule instead.nginx
# In your server { } block:
if ($http_user_agent ~* "Google\-Structured\-Data\-Testing\-Tool") {
return 403;
}Apache
# .htaccess
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Google\-Structured\-Data\-Testing\-Tool [NC]
RewriteRule .* - [F,L]
</IfModule>06 · User agents
User agents we see for Google-Structured-Data-Testing-Tool
The user agent published by the operator:
Mozilla/5.0 (compatible; Google-Structured-Data-Testing-Tool +https://search.google.com/structured-data/testing-tool)07 · Verification
Is it really Google-Structured-Data-Testing-Tool?
Google-Structured-Data-Testing-Tool’s operator publishes no IP ranges or hostnames, so requests cannot be verified. Treat the user agent as a claim, and watch your logs for unusual request rates.
FAQ
Questions about Google-Structured-Data-Testing-Tool
What was the Google Structured Data Testing Tool?
It was a Google tool that fetched a page and checked its structured data markup. A user triggered each request.
Does the Structured Data Testing Tool still exist?
Its old URL now redirects to Google's structured data documentation. Google posted an update on the tool in December 2020.
Last updated Oct 14, 2026