Up to 100 Files at Once
Upload your entire semester in one go: a textbook PDF, lecture slides, professor notes, problem sets, and practice tests. AskSia chats with all of them together, not one at a time.
100 files · one session
KO
AI Document Summarizer
Drop your whole bookshelf.
Every answer, cited.
Upload up to 100 documents at once and chat with all of them together. Every answer links back to the exact page of the exact file, with the referenced passage highlighted.
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 Summarizer?
AskSia AI Summarizer is a multi-document AI study tool that lets students upload up to 100 files at once and chat with the whole bundle in one conversation. Every answer carries citation markers that point back to the exact source page.
100
files per session
500p
textbook in one pass
OCR
native, zero setup
100%
answers cited to page
Why AskSia
The only summarizer built for a real study session.
Generic summarizers read one file at a time and paraphrase without traceability. AskSia reads your whole library at once and grounds every claim in the exact page.
Scanned PDFs, Read Perfectly
Drop a scan of your handwritten midterm review, a photocopied textbook chapter, or an image-only PDF. Native OCR runs automatically with no setup or conversion.
OCR · handwriting · zero setup
PDF · Word · PPT · Markdown · Together
Mixed-format sessions by default. A PDF textbook, PPTX lecture slides, a DOCX essay draft, and an MD study guide can all live in the same conversation.
Mixed formats · one chat
Cited to the Exact Page
Every claim carries a citation marker. Hover to see the exact source document page with the referenced passage highlighted, then jump back to the original file.
Page-level citations
Turns Notes into Study Tools
Convert your summarized library into study guides, flashcards, quizzes, and concept maps without re-uploading or copying anything out of the workflow.
Study guide · quiz · flashcards
Built for Long Textbooks
AskSia handles long academic files and full course bundles, so you can ask cross-document questions that match the way real courses are organized.
500-page textbook ready
How It Works
Upload, ask, verify.
Summarize a whole study bundle in three fast steps.
Step 01
Upload your whole study library
Drop PDFs, Word docs, PowerPoint decks, Markdown notes, scans, and handwritten review sheets into one session.
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 indexes every page
Files are read in parallel, OCR runs on scans automatically, and every page becomes searchable with source context preserved.
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
Chat with cited summaries
Ask for summaries, comparisons, quizzes, or study guides and verify every answer against the exact page citation.
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
Made for the way students actually study.
Textbook Compression
Turn a 500-page textbook chapter into a one-page study guide with the original page references preserved.
500-page textbooks
Handwritten Review Notes
Upload phone photos or scanned review packets. AskSia reads handwriting and turns it into clean, cited summaries.
OCR · handwriting
Multi-Paper Lit Review
Load research PDFs and ask which papers agree, disagree, or use similar methodology across the set.
Research synthesis
Full Course Materials
Drop the syllabus, lectures, handouts, and problem sets. Sia builds a cross-document study map from the whole course.
PDF · PPT · DOCX together
Standardized Test Prep
Upload practice tests and official guides, then find the topics, formats, and traps that repeat most often.
SAT · GRE · MCAT · LSAT
Cross-Lingual Study Bundles
Study across textbooks, slides, and papers in different languages while preserving citations to the original sources.
40+ language pairs
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
Frequently asked questions.
How many documents can I upload at once?
Up to 100 files in a single study session. You can mix formats freely, including textbook PDFs, PPTX slides, Word notes, and scanned review sheets.
Does AskSia read scanned PDFs and handwritten notes?
Yes. AskSia runs native OCR on scanned PDFs and handwritten notes automatically, with no pre-processing or third-party OCR setup.
What file formats are supported?
AskSia supports PDF, DOCX, DOC, PPTX, PPT, Markdown, EPUB, TXT, CSV, RTF, Google Docs links, Google Slides links, and public web articles.
How does the page citation and highlight feature work?
Every claim in Sia's response carries a citation marker. Hover it to see the source file, exact page number, and a visual page preview with the referenced passage highlighted.
Can it handle a 500-page textbook?
Yes. AskSia processes long textbook PDFs in one pass, preserving chapter structure, tables, and page references for cited answers.
Can I ask questions that span multiple documents?
Yes. AskSia searches every uploaded document simultaneously and returns one synthesized answer with citations to each relevant source.
Can I turn my library into flashcards or quizzes?
Yes. Your uploaded library can become study guides, flashcards, quizzes, and concept maps with traceable source references.
Does it work across languages?
Yes. AskSia supports 40+ languages for input and output, while preserving citation fidelity across translated summaries.
Is my document data private?
Uploaded files are encrypted in transit and at rest, processed for your session, and not used to train AI models.
How is AskSia different from NotebookLM, ChatPDF, or ChatGPT file upload?
AskSia is built for student study sessions: more files at once, native OCR, mixed formats, visual page highlighting, and built-in study tools.
Is there a free plan?
Yes. AskSia is free to start with no credit card required.
Can I export my study materials?
Yes. Export summaries, flashcards, quizzes, and study guides as TXT, DOCX, PDF, or push them into connected study workflows.
Start Today
Your whole bookshelf.
One conversation.
Join students using AskSia to summarize textbooks, lecture slides, and scanned notes together — free to start, no credit card required.