Transferring files to and from a Chromebook is very easy. There are several different techniques that can be used to move files between Chromebooks and between Chromebooks/Other Computers. Fortunately, Google has pushed out a new stable release of Chrome OS, adding native support for the widely used Media Transfer Protocol (MTP).
It is very easy to transfer files on a Chromebook. Open the Files app by clicking on the icon. 2.When connected to your Chromebook, the device appears as a folder in the left navigation panel of the Files app. 3.Click to place check marks next to any files and folders you want to copy. 4.Drag and drop the selected items to copy them between the drive and Chromebook. If your flash drive is not a USB-C type, you will need USB C Adapter
Using USB to Transfer Files on Chromebook
You can transfer files to and from your Chromebook with a USB flash drive. As far as USB cables go, there are two basic methods for transferring files between two devices. One is called USB Mass Storage, and the other is called MTP (media transfer protocol). Chrome OS supports both, so using things like external hard drives and USB thumb drives should work like you would expect, as well as smartphones/tablets.
Note that you cannot transfer files between computers with Bluetooth on Chromebooks.
Transferring Files with No Cables on Chromebook
There are many different software applications that will allow you to transfer files between a Chromebook, Android phone, iPhone, or another computer. Below are some of the most popular ways to transfer files with software.
AirDroid
AirDroid is a popular app that allows you to transfer files via the web to/from your Chromebook/Mobile device. AirDroid for Android replaces your USB cable with your web browser. AirDroid is available for your Chromebook via the Chrome Web Store. Download Here
AirDroid is recommended by PCWorld, BGR, LifeHacker, CNET, Gizmodo, XDA, Phandroid and many more technology media/websites.
Google Drive
Google Drive provides cloud storage, and web based apps for creating documents, spreadsheets and presentations. Files stored in Drive can be accessed from any device at anytime (assuming internet connection is available). Google Drive is probably the most common software that Chromebook users use to store and transfer files. Google Drive is included on your Chromebook. You can easily install Google Drive on other computers as well and this will make transferring the files very easy.
Dropbox
DropBox is a popular app that provides cloud storage. Files stored in Dropbox can be accessed from any device at anytime (assuming internet connection is available) Dropbox is available for your Chromebook via the Chrome Web Store. Download Here
You can also install DropBox on other computers to easily move files to a Chromebook.