TF-IDF (Term Frequency–Inverse Document Frequency) measures word importance by combining frequency and global rarity.

Does it detect multi-word phrases?

Yes, the extractor detects frequently occurring bigrams and trigrams.

AI Keyword Extractor

Free online AI keyword extractor — uses TF-IDF analysis to automatically extract the most important keywords and key phrases from any text. Supports English and Chinese with automatic stopword filtering. Perfect for SEO and content summarization. All analysis runs locally in your browser.

Extract Keywords

Keywords to show15

Extracted keywords will appear here.

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