AlchemyAPI is capable of extracting topic keywords from your HTML, text, or web-based content. We employ sophisticated statistical algorithms and natural language processing technology to analyze your data, extracting keywords that can be used to index content, generate tag clouds, and more.
API endpoints are provided for performing keyword extraction on Internet-accessible URLs and posted HTML files or text content.
Extracted meta-data may be returned in XML, JSON, RDF, and Microformats rel-tag formats. More information on Keyword Extraction API response formats is available.
Keyword extraction is supported in over a half-dozen different languages, enabling even foreign-language content to be categorized and tagged.