Paste your text, or optionally load a PDF to extract selectable text. Choose a target summary length and generate an extractive summary instantly. Your data stays on your device.
About this text & PDF summarizer
Summarizing long content is useful when you need to capture the main ideas quickly: articles, meeting notes, reports, emails, or study material. This tool provides a simple extractive summarizer, meaning it selects the most relevant sentences from your original text rather than inventing new wording. That makes it predictable and easy to verify: every sentence in the summary comes from your input.
You can paste text directly, or load a text-based PDF (a PDF where you can select and copy text). When a PDF is scanned as an image, it contains no selectable text. In that case, this tool will not extract anything because OCR is not included.
The “Summary length” slider controls how many sentences are kept. A smaller percentage produces a shorter summary, while a higher percentage keeps more context. This is ideal for producing a quick overview first, then refining the ratio if you need more detail.
Privacy is a key principle of Universe Tools: everything runs 100% locally in your browser. Your text and your PDF are not uploaded, stored, or shared.
Tip: if your input contains headings or bullet lists, keeping a slightly higher ratio often preserves the structure better. Tables may not be preserved perfectly.
What is this tool for?
This tool creates a short summary from a longer text. You can paste text directly, or load a text-based PDF to extract its selectable text and summarize it. Everything runs locally in your browser (no upload).
Concrete examples
- Meeting notes: paste 2–3 pages and get a quick recap of the key decisions.
- School / study: summarize a chapter to keep the main concepts before revising.
- Reports / emails: reduce long content into a short overview you can scan fast.
- PDF article: load a PDF where you can select text, then summarize it with the slider.
Common mistakes
- Uploading a scanned PDF (image-only): text extraction will return nothing because there is no OCR.
- Using a very low ratio (e.g. 10%) and expecting detailed context: increase the ratio if you need more coverage.
- Assuming the tool “rewrites” content: this summarizer is extractive (it selects sentences from your text).
- Pasting messy text (lots of broken lines): the result improves if the input is clean and well structured.
Limitations
PDF extraction works only if the PDF contains selectable text. Scanned PDFs require OCR, which is not included here. The summary keeps original sentences (extractive), so it may not produce perfectly smooth prose, and tables may not be preserved in a clean way.
Educational summary
The “Summary length” slider controls how much of the original content is kept. A higher percentage keeps more sentences (more context), a lower percentage creates a shorter recap. All processing happens locally, so your text and PDF content are not uploaded or stored.