Text & Writing

AI Text Summarizer

Summarize long articles, essays, and documents into concise key sentences. Extractive summarization powered by TF scoring -- runs in your browser.

100% free
No sign-up
No limits
Instant results

Input text

0 words / 0 sentences

Summary length

What this tool does

Extractive summarization (picks the most important sentences)
Configurable length: 3, 5, 7 sentences or 25%/50%
TF-based scoring with position and length bonuses
Preserves original sentence order
Shows word count reduction percentage
100% client-side -- no data sent anywhere

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What is AI Text Summarizer?

A text summarizer condenses long content into shorter versions while preserving the key information. This tool uses extractive summarization -- it analyzes each sentence using term frequency (TF) scoring, position weighting, and length analysis, then selects the most important sentences while maintaining their original order. Unlike AI-generated summaries, extractive summaries use your exact words, ensuring accuracy.

How to use AI Text Summarizer

1
Paste your text
Copy and paste your article, essay, blog post, or document into the input field. The tool works best with at least 3-5 paragraphs of content.
2
Choose summary length
Select how long you want the summary: Short (3 sentences), Medium (5), Long (7), or percentage-based (25% or 50% of the original).
3
Click Summarize
Press the Summarize button or use Ctrl+Enter. The tool scores every sentence and extracts the top-ranked ones in their original order.
4
Review the result
Read the summary and check the stats -- original word count, summary word count, and reduction percentage. Copy the summary with one click.

Features

Extractive summarization -- uses your exact sentences, no rephrasing
TF (term frequency) scoring identifies the most informative sentences
Position weighting gives bonus to opening and closing sentences
Five summary length options: 3, 5, 7 sentences, 25%, or 50%
Preserves original sentence order for natural reading flow
Word count comparison and reduction percentage stats
One-click copy for the generated summary
100% browser-based -- your text is never uploaded to any server

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Frequently asked questions

What is extractive summarization?

Extractive summarization selects the most important sentences from the original text and presents them as the summary. Unlike abstractive summarization (used by ChatGPT-style tools), it does not rephrase or generate new text -- it pulls exact sentences from your document.

How does the scoring algorithm work?

Each sentence is scored based on three factors: (1) Term Frequency -- sentences containing frequently used meaningful words score higher. (2) Position -- the first and last sentences get a bonus because they typically contain key points. (3) Length -- medium-length sentences (8-30 words) get a small bonus as they tend to be more informative than very short or very long ones.

What is the minimum text length?

You need at least 3 sentences for the summarizer to work. For best results, provide at least 5-10 paragraphs of text so the algorithm has enough content to identify the most important sentences.

Is my text sent to any server?

No. All processing happens in your browser using JavaScript. Your text is never uploaded, stored, or shared with any third party.

Can I summarize text in other languages?

The scoring algorithm works with any Latin-script language, though the stop-word list (common words filtered out) is optimized for English. Non-English text may produce slightly less accurate results.

Why use this instead of ChatGPT?

This tool is instant (no waiting for AI generation), free (no API limits), private (no data sent anywhere), and deterministic (same input always gives the same output). It also preserves your exact wording, which is important for academic and legal content where rephrasing could change meaning.

What does the reduction percentage mean?

It shows how much shorter the summary is compared to the original. A 70% reduction means the summary contains 30% of the original word count. Higher reduction means a more concise summary.

Can I use this for academic papers?

Yes. Since it uses extractive summarization (your exact sentences), it is suitable for creating abstracts or executive summaries. Always review the output to ensure the key points of your paper are included.

What is AI Text Summarizer?

How to use AI Text Summarizer

Paste your text

Copy and paste your article, essay, blog post, or document into the input field. The tool works best with at least 3-5 paragraphs of content.

Choose summary length

Select how long you want the summary: Short (3 sentences), Medium (5), Long (7), or percentage-based (25% or 50% of the original).

Click Summarize

Press the Summarize button or use Ctrl+Enter. The tool scores every sentence and extracts the top-ranked ones in their original order.

Review the result

Read the summary and check the stats -- original word count, summary word count, and reduction percentage. Copy the summary with one click.

Features

Extractive summarization -- uses your exact sentences, no rephrasing

TF (term frequency) scoring identifies the most informative sentences

Position weighting gives bonus to opening and closing sentences

Five summary length options: 3, 5, 7 sentences, 25%, or 50%

Preserves original sentence order for natural reading flow

Word count comparison and reduction percentage stats

One-click copy for the generated summary

100% browser-based -- your text is never uploaded to any server

Frequently asked questions

What is extractive summarization?

How does the scoring algorithm work?

What is the minimum text length?

You need at least 3 sentences for the summarizer to work. For best results, provide at least 5-10 paragraphs of text so the algorithm has enough content to identify the most important sentences.

Is my text sent to any server?

No. All processing happens in your browser using JavaScript. Your text is never uploaded, stored, or shared with any third party.

Can I summarize text in other languages?

Why use this instead of ChatGPT?

What does the reduction percentage mean?

It shows how much shorter the summary is compared to the original. A 70% reduction means the summary contains 30% of the original word count. Higher reduction means a more concise summary.

Can I use this for academic papers?