You can use mBlock 5 on the web on Chromebook.
To connect a device to mBlock 5 on the web, you need to install mLink first.
Install the mLink Extension on Your Chromebook
1. Download the file mLink.zip
2. Open the Extensions page
There are two ways to do so:
1. Open Google Chrome and choose Customize and control Google Chrome > More tools > Extensions.
2. Open Google Chrome, enter chrome://extensions in the address box, and press Enter.
3. Enable Developer mode
4. Drag the mlink.crx file you've downloaded and drop it to the page
5. Click Add app
You can see the mLink app on the Extensions page.
Note: Ensure that mLink is toggled On.
Connect a device
Refresh the mBlock 5 webpage and start to connect your device.