Can I upload my own PDFs?
Yes. LitSynth supports document upload and extraction workflows so you can work from papers you already have rather than searching from scratch.
Document to synthesis
Turn your PDF collection into a literature review with traceable citations
You have papers. Now make them work together. LitSynth helps you screen, extract, compare, and synthesize PDFs into a structured review where every claim links back to its source.
Editable workflow
From research question to a review you can inspect
Each stage stays visible, so you can revise the scope or evidence choices before generating again.
- 1
Upload or search for papers relevant to your research question.
- 2
Screen each paper for relevance and mark key findings.
- 3
Select the papers that should support your synthesis.
- 4
Generate a cited draft and inspect the audit trail.
Best for
- Researchers with a folder of PDFs they need to synthesize
- Teams preparing a review from pre-selected papers
- Anyone who wants citations anchored to specific documents
Not a replacement for
- OCR-heavy scans in poor quality — clean text PDFs work best
- Replacing close reading of critical source papers
Facts on this page
- Input
- Your PDFs
- Extraction
- Per paper
- Output
- Cited draft
start from papers you already have, not an empty page
findings, methods, and evidence notes stay linked to source
every claim traces back to a specific paper you selected
Limits stated on this page
- PDF extraction quality depends on document formatting and text clarity.
- Handwritten annotations and complex tables may need manual review.
- Drafts remain starting points — always verify claims against original PDFs.
Keep evidence decisions visible
LitSynth treats AI as support for a review process. You keep control of which papers enter the evidence set and which claims need another check.
Upload or select PDFs and screen for relevance to your question.
Extract key findings, methods, and evidence notes per paper.
Compare evidence across papers in a visible table.
Generate a cited synthesis where every paragraph points to its source.
Questions researchers ask
Does it handle scanned PDFs?
Clean, text-based PDFs produce the best results. Heavily scanned documents with poor OCR may produce incomplete extraction and need manual review.
How many PDFs can I include?
The number of papers you can process depends on your plan tier. The Free plan supports a single demo review; paid plans scale up with your credit allowance.
Is this different from a PDF summarizer?
Yes. A summarizer processes one paper at a time. LitSynth connects your PDFs into a synthesized review where evidence is compared and claims are cross-referenced across papers.
Continue your research workflow
Build the review, then revise any step
Search papers, screen the evidence, generate a cited draft, and return to earlier decisions whenever the scope needs to change.
Start your review