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Writing & ProductivityExtractive Summarizer
Shorten a passage by picking its most informative sentences, in original order.
Runs in your browser. Nothing is uploaded — your input is processed on this device and discarded when you close the tab.
Extractive Summarizer Extractive
Paste text below. The tool scores each sentence and returns the highest-scoring sentences, word for word, in their original order. An extractive summary can miss nuance and must be checked against the original.
100% in your browser. Pasted text stays on your device and is never sent to a server. No account or sign-up is needed.
0 / 15,000 characters
Character limit: 15,000 characters. If your text is longer, shorten it and try again; the tool will show a plain message instead of silently cutting it off.
Selected sentences highlighted in the original text
After you press Summarize, the sentences chosen for the summary are highlighted here, in place, so you can see exactly what was kept and what was left out.
How the scoring works
- Split. The text is split into sentences. Common abbreviations such as Dr. and e.g. are protected so they do not split a sentence by mistake.
- Count. Every content word — that is, every word that is not a common stopword such as "the" or "and" — is counted across the whole passage.
- Score. Each sentence scores the sum of its content words' frequencies. Sentences under 5 words score at half strength, sentences over 35 words are scaled down, the first sentence gets a +2 bonus and the second gets +1, and ties go to the earlier sentence.
- Pick and restore order. The highest-scoring sentences are picked, then put back in the order they appeared in the original. Exact duplicate sentences are kept only once, at their first occurrence.
How to use
- Paste your text into the large box. Watch the live character count: the limit is 15,000 characters.
- Choose a summary length. Pick a sentence count (for example, 3 sentences) or a percentage of the original sentences (for example, 25%).
- Press Summarize. Read the extractive summary, then check the highlighted original to see what was kept and what was left out.
- Copy or download the summary as a .txt file. Always check the summary against the original before you rely on it or share it.
Worked example
Press Load sample to fill the box with a short fictional passage about the Harborview community garden: eight sentences about its opening day, its forty raised beds, its watering rota, its first harvest, school visits, and plans for a compost area. With the default setting of 3 sentences, the tool keeps the highest-scoring sentences — the ones whose words repeat most across the passage — and shows them in their original order, not in score order. The highlighted view marks exactly those sentences in the full passage, so you can see that nothing was rewritten: each summary sentence is a sentence from the passage, copied word for word.
Limitations
This tool does not rewrite, paraphrase, understand, or judge whether a sentence is true. It only counts words and positions, so it can keep a sentence that repeats common words while leaving out a short sentence that carries the main point. An extractive summary can miss nuance, qualifications, and contradictions, and it must be checked against the original before it is used for anything important. Abbreviations outside the protected list, initials such as "J. R. R. Tolkien", and "etc." at a sentence boundary may split imperfectly, and a passage with very short sentences or heavy repetition will produce a weaker summary. The tool works on plain pasted text only: it does not read files, web pages, or images.
Frequently asked questions
What does "extractive" mean here?
Extractive means the summary is built only from sentences already in your text. The tool picks sentences and copies them word for word, in their original order. It never writes new sentences, so the summary cannot introduce wording that was not in the original — but it can still mislead by leaving important sentences out.
Does this tool use a language model?
No. This is not an AI summarizer: it does not use a language model, it does not understand the text, and it does not rewrite or paraphrase anything. It follows a fixed, published rule — word-frequency scoring with a length factor and a small position bonus — that anyone can check by reading the method on this page.
How is the summary length decided?
Choose a sentence count for an exact number, or a percentage for a share of the original. A percentage is rounded to the nearest whole sentence, with a minimum of one sentence: for example, 25% of 7 sentences is 2 sentences. If the requested length covers the whole passage, the summary keeps every sentence.
Why is the summary in original order, not score order?
Because a summary that jumps between the end, the middle, and the start of a passage is hard to follow. Keeping the original order preserves the passage's own sequence, even though the sentences were chosen by score.
Does my pasted text leave my device?
No. Everything runs in your browser. There are no uploads, no accounts, and no sign-up, and nothing you paste is sent to a server or stored.
Can I trust the summary without reading the original?
No. An extractive summary can miss nuance and must be checked against the original. Use it as a shortcut for getting the shape of a passage, not as a replacement for reading it, especially for decisions, quotations, or factual claims.
Related tools
- Content Analyzer — check readability, sentence length, and repeated words in a draft.
- Word Counter — count words, characters, sentences, and keyword density.
- Text and Document Comparison — compare two texts side by side or inline.
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