Diffbot
Turns any web page into structured JSON and powers a knowledge graph of billions of entities.
Diffbot is an AI web-data extraction platform that automatically turns any page into clean, structured JSON — no need to write scrapers for each site. It offers extraction APIs for articles, products, discussions and more, plus Crawlbot for large-scale crawling.
Uniquely, it maintains its own Knowledge Graph of billions of entities (companies, people, products and more) for company intelligence, data enrichment and research. It is valuable for developers and data teams that need to turn unstructured web information into usable data.
Key Features
- Turns any web page into structured JSON
- Extraction APIs for articles, products, discussions
- Crawlbot for large-scale crawling
- Knowledge graph of billions of entities
- Company intelligence and data enrichment
Pros
- No per-site scraper rules needed
- Query entities directly from the graph
- Built for large-scale data engineering
Cons
- Developer-oriented; needs integration
- Advanced usage is paid
Use Cases
- Batch-converting pages to structured data
- Company and people data enrichment
- Market research and competitive intelligence
Editor's Note
做 RAG 的人遲早會撞到同一堵牆：模型很聰明，但它不知道上週發生什麼。Diffbot 賣的其實就是這堵牆的門票。我覺得它最有價值的是知識圖譜而不是爬蟲——爬蟲誰都能寫，累積多年的實體關係資料不是。可惜中文覆蓋真的還差一截。
FAQ
What can Diffbot do?
It turns any web page into structured JSON and offers a knowledge graph of billions of entities.
Do I write scrapers?
No — AI detects page structure, so no per-site rules are needed.
Is there a free plan?
It offers a free trial and tiered paid plans.
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