The best free alternative to CamScanner is OSS Document Scanner, which is also Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to CamScanner and loads of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to CamScanner are Open Note Scanner, Tesseract, Google Lens and GImageReader.
The OSS Document Scanner is an Open Source app to scan all your documents. You either scan using your camera or by importing an image. The app will automatically detect you document within the photo and will crop the image.
This little application provides a way on scanning handwritten notes and printed documents.
One of the few - perhaps even the only - open source scanning apps for Android. Gives comparable results to Camscanner. Needs OpenCV Manager to be installed, but that's a formality (the latter requires no permissions.)
I could never scan a document with this app.
Tesseract.js is a javascript library that gets words in almost any language out of images.
Google Lens lets you search what you see, get things done faster, and understand the world around you—using just your camera or a photo.
OpenScan is an open source app that enables users to scan hardcopies of documents or notes and convert it to PDF or JPEG files. Its motto is "No ads. No data collection. We respect your privacy.".
Unfortunately no filters like "real" scan apps; so this is basically the original photo
Very fast and extremely easy to use. No ads or privacy scandals. Free and open source. Scans, crops, and touches up documents as well as CamScanner.
Crow Translate is a simple and lightweight translator programmed in C++ / Qt that allows to translate and speak text using Google, Yandex and Bing translate API.
The Adobe Scan scanner app turns your device into a powerful portable scanner that recognizes text automatically (OCR) and allows you to save to multiple file formats including PDF and JPEG.
Native macOS app for viewing, annotating, and editing images and PDFs, featuring tools for cropping, rotating, resizing images, rearranging pages, full-screen viewing, markup, document merging, batch conversion, and export in multiple formats.
Open Scanner is a fast and simple-to-use paper-scanning app with AI features to speed up your scanning workflow:
Simple Scan is the quick, easy way to scan paper documents to optimized, searchable PDF documents (or images) and send them almost anywhere.
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OSS Document Scanner is more lightweight, and has better filters. It condenses the files similarly as CamScanner, but the text is more clear.
The only problem is that for my phone (GrapheneOS), I have to take photos with camera and import them in the app, because for whatever reason it makes the images blurry when I take the photo in the app itself. This may be because of my Android operating system.
But it's smaller, open-source, and outputs better images (textbook pages).