Phrase, tag, or short sentence
Choose how short: a 3-word tag, a phrase, a tighter sentence, or a one-line summary. AskSia compresses without losing the main claim or adding filler.
Choose your length
EN
AI Sentence Summarizer
Compress any sentence, with cited source words.
Paste a sentence into AskSia and read a tighter version in seconds: a phrase, a tag, or a one-line summary, with [N] citations linking to the exact words in the source. Useful for note cards, study tags, and flashcard fronts. 40+ languages, free to start.
SupportsPDFWordPowerPointMarkdownScanned PDF · OCREPUBTXTCSVGoogle Docs
4.8 / 5 · 2M+ documents summarized by students at 2000+ universities
asksia.ai/summarize
9 files indexed
Study materials
Upload
Library
Selected files
Biology_Chapter_12.pdf
500p
Lecture_Slides_W6.pptx
Prof_Chen_Notes.docx
Handwritten_Review.pdf
OCR
Study_Guide.md
Problem_Set_5.pdf
Research_NeurIPS.pdf
Midterm_Review.docx
Tutorial_Slides.pptx
Midterm study plan — from all 9 of your files
Focus on cellular respiration and the Calvin cycle first — they dominate your textbook1 and lecture slides2. Prof. Chen's notes flag three common exam traps3.
Biology_Chapter_12.pdf
1
5
Lecture_Slides_W6.pptx
2
Prof_Chen_Notes.docx
3
Handwritten_Review.pdf
4
Study_Guide.md
6
≡ Summary
Study guide
Quiz
Flash Card
PDF
Biology_Chapter_12.pdf
p. 217
Quick Answer
What is AskSia AI Sentence Summarizer?
AskSia AI Sentence Summarizer takes any sentence and returns a tighter version, with [N] citations linking to the exact words in the source. The compressed output can be a phrase (a 3 to 5-word tag), a tighter sentence, or a one-line summary, depending on what you ask for. Useful for building note cards, study guide tags, flashcard fronts, and exam-cram compression. Supports 40+ languages with translation.
100
files per session
500p
textbook in one pass
OCR
native, zero setup
100%
answers cited to page
Why AskSia
The sentence summarizer that says it shorter.
Most chatbots add words when asked to compress. AskSia returns a tighter sentence or a single phrase, with citations to the exact source words.
Cited to the exact words
Every compressed output carries a [N] marker. Hover to see the exact source words highlighted in the original sentence. Useful for direct quoting and citation-ready notes.
Word-level citations
Multi-sentence batches
Paste a batch of sentences (a paragraph, a chapter excerpt, a list of quotations) and AskSia returns a compressed version of each, ready to paste into your study guide or note cards.
Batch compression
Side-by-side notes layout
The original sentence and the compressed version appear side by side, useful for note-taking, vocabulary lists, and definition cards.
Side-by-side
40+ languages with translation
Paste a sentence in Spanish, Mandarin, French, or any of 40+ supported languages, and read the compressed version in English alongside, with citations to the source words.
Cross-lingual
From sentence to flashcard
One click turns each compressed sentence into a flashcard front, a quiz prompt, or a node in a concept map. Useful for building study materials without manual rewriting.
Flashcards from sentences
How It Works
From long sentence to tight phrase in seconds.
Just paste. Multi-sentence batches supported.
Step 01
Paste the sentence
Open AskSia and paste the sentence (or batch of sentences) you want to compress.
Drop documents here
PDF, Word, PPT, Markdown, scans, and photos
PDF
Biology_Chapter_12.pdf
500p
P
Lecture_Slides_W6.pptx
38
W
Prof_Chen_Notes.docx
12
MD
Study_Guide.md
4
9 files ready · 100 max
Step 02
AskSia parses the words
AskSia parses each sentence at the word level, identifying the main claim, the qualifiers, and the supporting evidence.
Indexing in parallel
PDF
Textbook pages
DONE
P
Lecture slides
DONE
W
Professor notes
DONE
PDF
Handwritten review
OCR
MD
Markdown study guide
READING
100%
Sources indexed with page-level citation anchors.
Step 03
Read the compressed output
Read the tighter version with [N] citations linking to the exact source words. Ask Sia for a different length or a different angle. Export as TXT, DOCX, or Google Docs.
What should I study first for the midterm?
Start with cellular respiration1 and the Calvin cycle2. Your handwritten review adds a comparison table4.
Biology_Chapter_12.pdf
p.217
Referenced passage highlighted on the original page.
Use Cases
How students compress sentences with AskSia.
Note card fronts
Compress a long definition or explanation sentence into a 3 to 5-word tag, ready to paste on the front of a flashcard, with citations to the original words for the back of the card.
Flashcard fronts
Study guide tags
Turn a complex sentence into a phrase-length tag for your study guide table of contents or section headings, with citations to the source.
Study tags
Highlights in dense academic prose
Compress dense academic sentences into one-line summaries, useful for fast reading and citation-ready notes from theoretical texts and scholarly essays.
Academic compression
Quotation collections
Build a list of quotation tags from a chapter or essay by compressing each key sentence to a phrase, with the original cited for direct quoting in your essay.
Quotation tags
Foreign-language sentences
Compress sentences in 40+ languages and read the tighter version in English, useful for vocabulary cards, language-learning study guides, and reading comprehension prep.
Language learning
Exam-cram one-liners
Compress key sentences from your study guide into one-line cram cards for last-minute exam review, with citations to the source for verification.
Exam cram cards
Compare
AskSia vs. NotebookLM,
ChatPDF, and ChatGPT.
Most AI document tools are built for one file. AskSia is built for students studying a whole library at once.
| Feature | AskSia | NotebookLM | ChatPDF | ChatGPT File Upload |
|---|---|---|---|---|
| Max files per session | ✓ 100 | ~ 50 | 1 | ~ 10–20 |
| Native OCR for scanned PDFs | ✓ Auto, no setup | ~ limited | ✗ | ✗ |
| Handwritten notes recognition | ✓ 40+ languages | ✗ | ✗ | ✗ |
| Mixed-format session (PDF+PPT+DOCX+MD) | ✓ All at once | ~ partial | PDF only | ✓ |
| Hover-to-source page highlighting | ✓ Visual preview | ~ citations only | ~ page ref | ✗ |
| 500-page textbook in one pass | ✓ No chunking | ~ size limits | ~ size limits | ✗ truncation |
| Cross-document Q&A | ✓ Unified answer | ✓ | ✗ single doc | ~ degrades |
| Auto flashcards & quizzes | ✓ One click | ✗ | ✗ | ✗ |
| Free to start, no credit card | ✓ 100 files free | ✓ | ~ 1 file free | ✗ Plus needed |
FAQ
Common questions about sentence summarizing.
How do I compress a sentence with AskSia?
Open AskSia, paste the sentence into the input area, and the AI returns a tighter version (a phrase, a tag, or a one-line summary, depending on your ask) with [N] citations linking to the exact source words. Hover any [N] to see the source phrase highlighted.
Can I choose how short the compression is?
Yes. The default is a tighter sentence. Ask Sia for a phrase (5 to 8 words), a tag (3 words), or a one-line summary, and the model adjusts. The output stays grounded in the same source citations regardless of length.
Can I compress multiple sentences at once?
Yes. Paste a batch of sentences (a paragraph, a chapter excerpt, a list of quotations) and AskSia returns a compressed version of each, in order. Useful for building study guides, vocabulary lists, and quotation collections.
Can I trust the compressed sentence?
Every compressed output is grounded in a [N] citation that links to the exact source words. You can hover any citation to see the original phrase highlighted. The compression will not include any meaning that is not in the source sentence.
Can AskSia compress sentences in other languages?
Yes. AskSia compresses sentences in 40+ languages and detects the source language automatically. You can also translate the compressed output at the same time, useful for vocabulary cards and language-learning study guides.
Can I turn compressed sentences into flashcards?
Yes. Each compressed sentence turns into a flashcard front, a quiz prompt, or a node in a concept map with one click. The original sentence appears on the back of the card, with citations preserved.
Can I export the compressed sentences?
Yes. Export the compressed sentences as TXT, DOCX, or send to Google Docs or Notion. Citations linking to source words are preserved in the export, useful for note cards and study guides.
Start Today
Paste a sentence. Get a tighter version.
Whether for note cards, study tags, flashcard fronts, or exam-cram compression, AskSia tightens any sentence with citations to the source words.