Extract keywords from text with AI
Keyword Extractor is a free online tool that uses OpenAI's GPT-4o mini model to identify the most important keywords and key phrases in a piece of text, along with a brief explanation of why each one matters. Paste in an article or piece of content and get a numbered list of keywords back — useful for SEO research and content planning.
Is Keyword Extractor really free to use?
Yes, Keyword Extractor is free to use with no signup or subscription required.
How does the keyword extraction work?
It sends your text to an AI language model, which analyzes the content and returns a numbered list of what it judges to be the most important keywords and phrases, with a short explanation for each.
Can I extract keywords from PDFs or only text?
Keyword Extractor only accepts pasted plain text — there's no file upload. You can copy text from a PDF or Word document and paste it into the tool.
How many keywords will be extracted from my content?
The number varies based on content length and what the AI judges to be relevant; there's no fixed count.