# cyanfish/naps2

Scan documents to PDF and more, as simply as possible.

Repository: https://github.com/cyanfish/naps2
Canonical: https://ross.abutalabs.com/products/naps2
Homepage: https://www.naps2.com
Language: C#
License: NOASSERTION
License Family: other
Topics: csharp, dotnet, scanner, pdf, wia, twain, sane, escl, linux, windows, macos, ocr
Last push: 2026-08-23T19:10:30+00:00

## Health v2 (maintenance only)
Score: 97/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 94, longevity 100
- inputs: {"age_days": 4063, "days_push": 10, "days_rel": 42, "gap_med": 8, "n_releases_24m": 12}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4464, forks 451 (observed 2026-08-28T04:08:50.795315+00:00)

## What it is
NAPS2 is a free, open-source document scanning application for Windows, Mac, and Linux that supports WIA, TWAIN, SANE, and ESCL scanners and saves scans as searchable PDF, TIFF, JPEG, or PNG files with Tesseract-based OCR. It also ships NAPS2.Sdk, a .NET scanning library, plus a CLI for automation.

## Use cases
- scan documents to searchable pdf
- scan with twain or wia scanner on linux
- add ocr to scanned pdfs
- share a scanner over the network
- batch scan documents from command line
- scan duplex documents with adf
- embed scanning into a .net app

## When to choose
- you need a simple, free scanner app across Windows, Mac, and Linux
- your scanner uses WIA, TWAIN, SANE, or eSCL drivers
- you want searchable PDFs with OCR in 100+ languages
- you need a .NET scanning library or CLI automation for businesses

## When to avoid
- you need photo editing or advanced image management beyond scanning
- you want a mobile-first scanning solution
- you need a license other than GPL/LGPL for the desktop app

## Facets
- artifact type: application
- maturity: active
- function: ocr, pdf, image-processing, cli, gui, sdk
- domain: pdf, developer-tools, files, cross-platform
- platform: windows, dotnet, cli
- tags: document-scanning, twain, wia, sane, escl, tesseract, scanner-drivers, network-scanning, pdf-ocr, macos, linux, desktop

## Member repositories
- cyanfish/naps2 (main) score 97

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:50.795315+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:20:39.793501+00:00, confidence not recorded.
  - readme: https://github.com/cyanfish/naps2 (fetched 2026-08-28T04:08:50.795315+00:00, sha 4361c16c3ecf)
  - homepage: https://www.naps2.com (fetched 2026-08-29T09:07:17.695883+00:00, sha 4aff69415bac)
  - site_page: https://www.naps2.com/download (fetched 2026-08-29T09:07:17.704803+00:00, sha 8bc132946aac)
- Data as of 2026-08-30T08:39:29.467469+00:00.