Text Summarizer
Free online text summarizer. Condense long articles, essays, and documents into concise summaries using extractive sentence ranking.
Loading tool...
What is Text Summarizer?
The Text Summarizer is a free online tool that condenses long passages into concise summaries. It analyzes word frequencies to identify the most important sentences, then assembles them into a shorter version that preserves the key points. Everything runs in your browser, so it is private and works offline.
Key Benefits
- Grasp the gist of long articles in seconds without reading every word
- Adjustable length from 1 to 10 sentences for the right level of detail
- Live metrics show word counts, sentence ratio, and reduction percentage
- Top keywords highlight the most frequent meaningful terms
- Copy to clipboard or download as a text file in one click
- 100% client-side and offline, no API keys or sign-up required
Common Use Cases
- •Study and revision: condense lecture notes or textbook chapters
- •Content curation: generate TL;DR overviews for newsletters or social posts
- •Research: quickly triage which papers or reports are worth reading in full
- •Email and reports: draft executive summaries for long documents
- •Accessibility: shorter summaries help readers with limited time
How to Use the Text Summarizer
- Paste your text: Paste an article, essay, or document into the text area. Use the Load Example button to try it instantly.
- Choose the summary length: Drag the slider to set how many sentences (1-10) the summary should contain. More sentences keep more detail.
- Read the generated summary: The tool ranks sentences by word frequency and shows the top-ranked ones in original reading order, along with word counts and reduction percentage.
- Copy or download: Click Copy to send the summary to your clipboard, or Download to save it as a .txt file for later use.
Key Features
- Adjustable summary length from 1 to 10 sentences
- Frequency-based extractive ranking with position bias
- Live metrics: word counts, sentence ratio, and reduction percentage
- Top keyword chips extracted from meaningful terms
- One-click copy to clipboard and download as .txt
- 100% client-side and offline - no API keys, no data sent
Frequently Asked Questions
How does the Text Summarizer work?
The tool uses extractive summarization. It splits the text into sentences, counts the frequency of meaningful (non-stopword) terms, normalizes those frequencies, and scores each sentence by the sum of its word scores divided by the square root of its length. The highest-scoring sentences are then selected and returned in their original reading order.
Does it use AI or an external API?
No. This is a fully offline, frequency-based algorithm that runs entirely in your browser. It does not call any external API, does not require a key, and never uploads your text. This makes it fast, private, and free to use without limits.
Can I control how long the summary is?
Yes. The summary length slider lets you choose how many sentences (from 1 to 10) the summary should contain. The tool automatically clamps the value to the number of sentences available in your text, so it never returns more sentences than exist.
What is the difference between extractive and abstractive summarization?
Extractive summarization picks the most important existing sentences from the source text, so every sentence in the summary is copied verbatim. Abstractive summarization generates new sentences that paraphrase the content (the way a human would). This tool is extractive, which is reliable, fast, and always faithful to the original wording.