Text & Article Summarizer

How to use 4 steps

Paste the text under Paste Full Text to Summarize.
Press Generate Summary.
Press Copy Summary.
Optional: add a free AI key for stronger results.

Read the full guide

Paste Full Text to Summarize:

Executive Summary & Key Highlights

Loading the tool… 0 of 4 parts

Getting the tool ready. On a slow connection this can take a few seconds.

This tool runs entirely in your browser and produces an estimate from the text or file you supply. It does not query an external database or index, and nothing you enter is uploaded.

How this tool works

Without a key this does real work in your browser rather than trimming the article. Every sentence is scored on term frequency — how often its words appear across the whole text, ignoring stopwords — then normalised by the square root of its length so that short fragments and very long sentences compete fairly. Sentences near the opening and the close get a modest lift, because that is where written prose puts its weight. The highest-scoring quarter is kept and re-emitted in the original document order.

That is extraction: the sentences you get back are verbatim from your text. Add a free AI key and a language model writes a summary instead, in its own words, which reads better but introduces the risk that it phrases something the source did not quite say.

Getting a better summary

Give it enough to work with: scoring needs at least a few full sentences. Under about four, there is nothing to rank and it will tell you so.
Paste clean prose: navigation text, cookie banners and repeated headers inflate term frequencies and pull unrelated sentences into the result.
Expect roughly a quarter: the extractive summary keeps about 25% of your sentences, with a floor of three and a ceiling of eight.
Check the numbers: with a key, verify any figure in the summary against the source. Extraction cannot misquote a statistic; a language model can.

Full guide

5 min read

What a good summary keeps, and what it is safe to drop

Extraction and abstraction fail in opposite directions. How sentence ranking works, which documents defeat it, and the check that catches a summary saying more than its source.

Read the guide

Frequently Asked Questions

Specific to the Text & Article Summarizer. Broader questions about this category are answered on the category page.

Does it summarise or just take the first few sentences?

It ranks. Term frequency, sentence length and position all feed the score, and the selected sentences are frequently from the middle of a document rather than the top. This is worth stating because an earlier version of this tool did simply return the opening sentences, which is not a summary of anything.

Why are the sentences word-for-word from my text?

Because that is what extractive summarisation is — it selects rather than writes. The advantage is that it cannot misrepresent your source, since every word is your source's. Add a free AI key if you want a summary written in new prose.

Does it work on languages other than English?

Partly. Scoring, sentence splitting and length normalisation are language-independent, but the stopword list is English, so in other languages common words are not filtered out and the ranking is less sharp. Results are still usable, just blunter. With a key, the model replies in whatever language you paste.

Why is the sentence count different from what I expected?

Sentence splitting protects common abbreviations and decimals — Dr., e.g., 3.5 — but no splitter is perfect. Text dense with unusual abbreviations, initials or citation markers will be over-segmented, and very short fragments under fifteen characters are discarded before scoring.

Can I control how long the summary is?

Not directly in the offline mode; it targets a quarter of your sentences, clamped between three and eight. With a key you can be explicit — paste your text, then add a line such as "in exactly three bullets" or "under 100 words" at the end of it.