An Android app to scan your documents —
simple and respectful.

FairScan is an Android app to scan documents quickly, easily and privately.

It's designed to be simple: users get a clean, shareable PDF in seconds, with no manual adjustments.
And respectful: open source, minimal permissions, no tracking, no ads.

• Website: https://fairscan.org
• Blog: https://fairscan.org/blog/

Scan	Preview	Save & Share

• Clear, distraction-free interface
• Easy scanning process: scan → preview → share
• Automatic document detection using a custom segmentation model
• Automatic perspective correction
• Automatic image enhancement
• Fast PDF generation with no manual adjustments
• Fully offline – the app has no internet permission
• Minimal permissions
• Open source, GPLv3

FairScan works on any device that:

• runs Android 8.0+
• has a camera

FairScan uses:

• Jetpack Compose for the UI
• CameraX for image capture
• LiteRT to run the custom segmentation model for automatic document detection
• OpenCV for perspective correction and image enhancement
• PDFBox-Android for PDF generation

FairScan uses a custom-trained image segmentation model to detect documents:
https://github.com/pynicolas/fairscan-segmentation-model

It's based on a fully public dataset that is available here:
https://github.com/pynicolas/fairscan-dataset

The build system automatically downloads the model using
download-tflite.gradle.kts.

Related blog posts:

• Making document detection more reliable
• Building a public dataset for FairScan

To build an APK:

./gradlew clean check assembleRelease

To build an Android App Bundle:

./gradlew clean check :app:bundleRelease

This project is licensed under the GNU GPLv3. See LICENSE for details.