How does an extractive paragraph summarizer work?

An extractive summarizer parses your paragraph into individual sentences and counts the frequency of key terms (after filtering out common stop words). It then scores and ranks each sentence based on word weights, presenting the highest-ranking sentences in order.

What is a good text compression ratio?

For general reading, a 40% to 50% compression ratio is ideal. This retains the core data points while cutting reading time in half. Highly technical documents may benefit from a lower compression (e.g. 60-70% size) to retain complex context.

Paragraph Summarizer | Free Text Summarizing Tool

Text to summarize

Paste an article, essay or report0 words · 0 sentences

Summary length: 5 sentences

Summary

The most informative sentences from your text will appear here, in their original order.

Works in your browser. Your text is not uploaded.

How this summarizer works

This is an extractive summarizer. It does not rewrite your text or invent new sentences. It picks the sentences that carry the most information and shows them in their original order, so every line of the summary is something the author actually wrote.

The text is split into sentences and paragraphs.
Common words (“the”, “and”, “is”) are ignored, and each remaining word is weighted by how often it appears in the whole text and how many sentences it appears in. Words that define the topic score high.
Each sentence gets the sum of its word weights, adjusted for length. The first sentence and the opening sentence of each paragraph get a small bonus, because writers usually put the main point there.
The top sentences are chosen, skipping any that repeat a sentence already picked, and put back in their original order.

Tips for a better summary

Keep paragraph breaks when you paste. They help the tool find topic sentences.
For a 1,000-word article, 4–6 sentences usually give a good overview. Move the slider to make it shorter or longer.
Use Bullet points for notes and Paragraph for an abstract or a quick email.
Extractive summaries work best on news, reports, essays and documentation. Fiction, poems and dialogue do not summarize well this way.

Limits

Because nothing is rewritten, the summary can contain words like “this” or “he” that refer back to a sentence that was left out. Read it once and adjust before you share it. The scoring is designed for English; other languages work only roughly. For a word and sentence count of your text, use the Word Counter.