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EasyUpload Server Accepts Images from Android to be Uploaded to a PC
...Just select the images from the Android device, establish a connection to the server using its IPv4 address and port number, and then upload the images in a fast way.
Download the server project from here: http://easyupload.sourceforge.net
The simplicity of using EasyUpload helps to avoid using Bluetooth for image transfer.
The project just works for images and later it can work with any type of files.
The source code of both the client and server apps are available in this GitHub page: https://github.com/ahmedfgad/AndroidFlask
The project is documented in a Heartbeat tutorial titled "Uploading images from Android to a Python-based Flask server" available here: https://heartbeat.fritz.ai/uploading-images-from-android-to-a-python-based-flask-server-691e4092a95e
Logo image from flaticon.com by phatplus (https://www.flaticon.com/authors/phatplus)
File2QR is an Android app that let you encode any small file on the filesystem to a QR code. Conversely, you can decode the encoded file from the generated QR, with mobile's camera. File2QR is built on ZXing library.