What is Diffbot?

Diffbot is a web crawler that extracts and structures website content using AI-powered visual understanding, providing knowledge graph data for applications like market intelligence, e-commerce, and AI model training. You can set up Agent Analytics to see when Diffbot visits your website.

Overview

Operated By Diffbot
Source Official Website
Expected To Follow Robots.txt Yes
Insights Last Updated September 14, 2026

Do you operate this agent? Contact us to suggest an update.

Category

AI Data Provider
Crawls websites to supply structured content to AI systems as a third-party service

Expected Behavior

Diffbot supports several kinds of automated activity, so its traffic pattern depends on the task. It may perform broad crawls to collect content or build an index, make targeted requests for specific pages, or shift between these behaviors as demand changes.

Diffbot's User Agent

User Agent Mozilla/5.0 (compatible; Diffbot/1.0; +https://www.diffbot.com)

How To Block Diffbot With Robots.txt

Add this rule to your robots.txt file to block Diffbot from accessing your website, or use Automatic Robots.txt to block all AI data providers at once. You can customize which pages are blocked by swapping out / for a different path.

User-agent: Diffbot # https://knownagents.com/agents/diffbot
Disallow: /

Insights for Diffbot

As of September 14, 2026, this data reflects agent visits measured across thousands of websites using Agent Analytics, combined with daily scans of the top 1000 websites and their robots.txt files.

Robots.txt Blocked Percentage

19%
19% of top websites are blocking Diffbot
Learn How →

Country of Origin

United States
Diffbot normally visits From the United States

Robots.txt Blocking Trend

19% of top websites block Diffbot in their robots.txts.

Overall AI Data Provider Traffic

0.2% of all web traffic came from AI data providers.

Top Visited Website Categories

Travel and Transportation
Science
Real Estate
Home and Garden
Reference

The types of websites most frequently visited by Diffbot.

Frequently Asked Questions

Should I Block Diffbot?

It depends on which uses you want to support. Diffbot may supply your content to enterprises, including AI companies, or use it in consumer-facing products. Those uses can include AI training, search, and retrieval. Allowing it may expand your visibility across those products and services, while blocking it limits that reach without affecting traditional search rankings. For context, 19% of the top websites we track currently have robots.txt rules for Diffbot.


Does Diffbot Follow Robots.txt Rules?

Yes. Diffbot is expected to follow robots.txt rules, so a disallow rule is the appropriate first step. Automatic Robots.txt can add and maintain that rule, while Agent Analytics lets you verify whether Diffbot respects it.


Does Diffbot Access Private Content?

No special access. Diffbot can reach public pages, and some providers use proxy networks that can bypass rate limits or geographic restrictions. Protect sensitive content with authentication rather than relying on those softer barriers.


How Can I Tell if Diffbot Is Visiting My Website?

Agent Analytics tracks Diffbot visits in real time. You can also check your server logs for requests whose user-agent string contains "Diffbot". Traffic may range from long crawl sequences across your site to isolated requests for specific pages, depending on whether it is collecting, indexing, or fetching content on demand. Because Diffbot does not publish a verification method, any client can claim its identity and a log match is only a clue.


Why Is Diffbot Visiting My Website?

One of Diffbot's customers may have requested data from your site, or your pages may be part of Diffbot's standing index. A single fetch can support multiple downstream applications.