AI Text Summarizer
Summarize long text into key points instantly. Extracts the most important sentences — runs entirely in your browser.
Processed on your device — never uploaded
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Summary Length
Paste or type your text above to generate an instant summary.
Frequently Asked Questions
How does this text summarizer work?
This tool uses extractive summarization powered by TF-IDF (Term Frequency-Inverse Document Frequency). It splits your text into sentences, scores each sentence by how important its words are relative to the whole document, and selects the top-scoring sentences while maintaining their original order.
Is my text sent to a server or AI model?
No. Everything runs entirely in your browser using pure JavaScript. Your text never leaves your device — there is no server, no API call, and no AI model download required.
What kind of text works best?
This summarizer works best on articles, essays, reports, blog posts, and other long-form written content with clear sentences. It is less effective on bulleted lists, code, or very short text with fewer than a handful of sentences.
Can I control the summary length?
Yes. You can choose from Short (3 sentences), Medium (5 sentences), Long (8 sentences), or use the Custom slider to pick any number between 1 and 20 sentences.