Use the free Extractive Text Summarizer below: your data never leaves your browser — all work happens on your device, and nothing is uploaded to any server.
A summary made only of your own sentences
Long texts are expensive to read twice. A meeting transcript, a research paper, a policy document or a chapter of a book can take an hour to absorb, and most of that hour goes to sentences that carry little new information. A summary that keeps only the sentences doing the real work can cut the reading time to minutes, and that is exactly what this tool produces.
There is one important honesty note, stated up front: no artificial intelligence is involved. This tool does not write anything new, does not paraphrase and does not understand your text. It is an extractive summarizer, which means the summary consists entirely of sentences copied from your original, chosen by a simple counting rule and shown in their original order. If a sentence is not in your text, it will not be in the summary.
How the sentences are chosen
The tool splits your text into sentences, then counts how often each meaningful word appears across the whole text, ignoring a built-in list of common filler words such as the, of and, and to. Each sentence is scored by adding up the frequencies of its words, so sentences packed with the text’s recurring terms score highest. The top sentences are kept, up to the length you choose, and put back in their original order so the summary still reads like a coherent passage rather than a shuffled pile of lines.
You choose the length: three sentences, five sentences, or thirty percent of the sentences in the original. Three sentences give a quick gist for a short article. Five suit a longer report. Thirty percent scales with the document, which is the right choice for very long texts where a fixed count would either say too little or too much.
When extractive summaries shine, and when they do not
Extractive summaries work best on factual, well-structured writing: reports, articles, documentation and transcripts where the key points are stated plainly in a few sentences. They work worst on stories, arguments and jokes, where meaning lives in the flow between sentences rather than in any single one, and where a sentence lifted out of context can mislead. They also cannot fix a badly written original: if the source buries its point, the summary will bury it too.
Watch for two specific limits. First, a sentence can score highly just by repeating a frequent word without saying anything new, so summaries sometimes include a near-duplicate of another kept sentence. Second, sentences that refer back to earlier ones with words like “this” or “it” can read oddly on their own. Both are the price of a method that never rewrites: what you gain in faithfulness, you lose in smoothness.
Practical uses
Students condense chapters into revision notes they can trust, because every line is verifiably from the source. Professionals skim long threads and reports before a meeting. Researchers triage papers: read the five-sentence summary, then decide whether the full paper deserves an hour. Writers check whether their own draft’s most important sentences are actually the ones the method picks; if not, the draft may need restructuring.
Choosing between three sentences, five, and thirty percent
The right length depends on the document and the reader. Three sentences suit a news article or a short memo where the reader wants the gist in under a minute. Five sentences suit a report chapter or a long email thread where a little more context survives. Thirty percent suits very long documents such as books or full transcripts, where a fixed count would leave out too much. When in doubt, start with five sentences, read the result, and adjust: a summary that feels thin needs a longer setting, and one that feels padded needs a shorter one.
Privacy note
Because there is no AI service behind this tool, there is no server receiving your text at all. Everything runs on your device, which makes it suitable for unpublished drafts, confidential reports and private notes. Paste, summarise, copy the result and move on: your text never leaves the browser tab.