Free AI Content Summarizer
Summarize long articles into concise key points using AI. Free, fast, and works entirely in your browser with no sign-up required.
Updated
Content Summarizer
Extract key points and create concise summaries with readability analysis
How It Works
Our extractive summarizer scores each sentence using multiple factors:
- Word Frequency (TF): Sentences with frequently occurring meaningful words score higher
- Position: First/last sentences often contain key information
- Statistics: Sentences with numbers, percentages, and data
- Signal words: Important, key, conclusion, therefore, etc.
- Named entities: People, places, organizations
- Readability: Flesch-Kincaid score comparison for original vs summary
Tip: Use Short for quick overviews, Medium for balanced summaries, and Long to retain more detail.
Frequently Asked Questions
What is the Content Summarizer?
The Content Summarizer is a free AI-powered tool that condenses long articles and documents into concise summaries with key points.
Is the Content Summarizer free?
Yes, it is free to use with no registration required.
How long can the input text be?
The Content Summarizer handles articles of various lengths, condensing them into brief summaries while retaining the most important information.
Is my data safe with this tool?
Absolutely. The AI Content Summarizer processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.
Does the AI Content Summarizer work on mobile devices?
Yes, the AI Content Summarizer is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.
Do I need to create an account to use this tool?
No account or registration is needed. Simply open the AI Content Summarizer in your browser and start using it immediately. There are no sign-up walls or usage restrictions.
How do I use the AI Content Summarizer?
Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.
Which browsers are supported?
The AI Content Summarizer works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.
What is the difference between extractive and abstractive summarization?
Extractive summarization selects the most important sentences already in your text and stitches them back together in their original order, so every word comes straight from the source. Abstractive summarization rewrites the content in new phrasing, the way a person paraphrasing would. This tool is extractive: it scores each sentence on signals like word frequency, position, numbers, signal words, and named entities, then keeps the highest-scoring ones. The big advantage is faithfulness — because nothing is rephrased, the summary cannot invent facts or hallucinate, which matters when you are condensing research, legal text, or an unpublished draft. The trade-off is that the result reads as a tightened version of the original rather than a fresh narrative. Paste your text above and run it to see exactly which sentences carry the meaning.
How much should I compress an article when summarizing it?
It depends on why you are reading. To decide quickly whether a long page is worth your time, pick Short, which keeps roughly 15% of the original and gives you the core thesis in a few sentences. For studying or briefing where you still need supporting detail, Medium (about 35%) keeps the argument plus its main evidence. Long (around 60%) is closest to a careful skim that drops only filler. If none of those fit, switch to Custom and drag the slider anywhere from 5% to 80% to hit an exact tightness. A useful approach is to start at Medium, then nudge the percentage down until the summary feels lean without losing a point you care about. The tool shows the compression percentage and word counts so you can tune precisely — set your length above and summarize.
Does the summarizer change the wording or only keep original sentences?
It keeps your original sentences exactly as written. Because this is an extractive summarizer, it never paraphrases, swaps synonyms, or generates new wording — it scores the sentences you pasted and reassembles the strongest ones in their original sequence. That means the summary's facts, figures, quotes, and terminology are always identical to the source, with no risk of an AI rewrite introducing an error or a subtle shift in meaning. One thing to know: since whole sentences are lifted out, a kept sentence may reference something from a sentence that was dropped, so a quick read-through helps the flow connect. The keyword panel and the Highlight Key Sentences view let you see what was selected against the full text. Paste your content above to get a summary that stays true to your words.
What does the Flesch-Kincaid reading-ease score tell me about my summary?
The Flesch-Kincaid reading-ease scale runs from 0 (hardest) to 100 (easiest) and maps roughly to a US school grade level — higher numbers mean shorter sentences and simpler words, so the text is easier to read. The tool scores both your original and the summary, so you can see at a glance whether trimming actually made the text more approachable or just shorter. It also shows the average sentence length and average word length behind the score, which are the two main things driving it. A summary built from long, dense sentences can still read hard even after cutting word count, and seeing both scores side by side flags that. Run a summary above, compare the two readability figures, and adjust your length if you need a simpler result.
Can I summarize a PDF or a web page URL with this tool?
This tool works on text you paste directly into the box, not on uploaded PDFs or pasted links — there is no file upload or URL-fetch step, which is part of how it stays fully private and runs entirely in your browser. The workaround is simple: open the PDF or web page, select the body text you want, copy it, and paste it into the input. For a PDF, use your reader's select-all or text-export so you grab the words rather than an image; for an article, copy the main content and skip menus or ads so the summary focuses on what matters. Once the text is in, you get the summary, key points, takeaways, keywords, and readability comparison just the same. Paste your copied article or document above and summarize it in one click.
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About the Content Summarizer
The Content Summarizer condenses a long article into a short version that keeps the most important sentences. Paste your text, choose how aggressively to trim it, and the tool returns a summary, a numbered list of key points, and a set of takeaways — alongside word counts, compression ratio, and a readability comparison. It is built for readers and writers who need the gist of a dense page fast: students working through assigned reading, professionals triaging a long report, marketers pulling a TL;DR from a draft, and anyone who wants to decide whether a 2,000-word piece is worth a full read.
Everything runs locally in your browser. Your text is processed on your own device and never uploaded to a server, so it stays private even when you paste an unpublished draft, internal notes, or confidential research. There is no sign-up, no word cap, and nothing to install.
How the summarizer chooses what to keep
This is an extractive summarizer, which means it selects and reorders the strongest sentences from your text rather than rewriting them in new words. Each sentence is scored on several signals, then the highest-scoring sentences are stitched back together in their original order so the summary still reads in sequence. The scoring factors include:
- Word frequency — sentences built from the words that recur most across the whole text (ignoring common stop words) score higher.
- Position — opening and closing sentences often carry the thesis and conclusion, so they get a boost.
- Numbers and data — statistics, percentages, and dollar figures are treated as high-value facts worth keeping.
- Signal words — terms like important, key, therefore, however, research, and concludes flag a sentence as load-bearing.
- Named entities — capitalised people, places, and organisations add weight.
- Length and structure — very short fragments are penalised, mid-length sentences and quotations are favoured.
Because it extracts rather than rephrases, the wording in your summary is always faithful to the source — nothing is invented or hallucinated.
Controls and outputs
You decide how much to keep. Pick Short (~15%), Medium (~35%), or Long (~60%) of the original, or switch to Custom and drag the slider anywhere from 5% to 80%. A second slider sets how many key points you want, from 3 to 10, and you can render the result as a flowing paragraph or as bullets.
Run the summary and you get three views: the Summary itself, a numbered Key Points list, and short Takeaways. The tool also reports the original and summary word counts, the compression percentage, estimated reading time for each (at about 200 words per minute), and how many sentences were kept out of the total. A keyword panel surfaces the most prominent terms so you can see the document's main topics at a glance. You can copy any view to the clipboard or download the whole thing as a .txt or .md file.
Readability comparison
Alongside the summary, the tool scores both the original and the summary on the Flesch-Kincaid reading-ease scale, which runs from 0 (hardest) to 100 (easiest) and maps roughly to a school grade level. Seeing the two side by side tells you whether trimming actually made the text simpler, and the average sentence length and average word length give you concrete numbers behind the score. Two extra views help you check the result: Highlight Key Sentences shades the selected sentences inside the full original text, and Side by Side places the original and summary in adjacent columns so you can confirm nothing essential was dropped.
Paste your content above, set your length, and summarise — then refine the percentage until the summary is as tight or as thorough as you need.