You have to install Java Development Kit (JDK). The installer can be downloaded for free from Oracle website. Please accept their license agreement and download the correct version of the JDK for your OS. Once you have downloaded the JDK, please run the installer and follow the instructions to install JDK.

No, the assets library in pubcoder is unique for each project, since it is embedded to the project file.

Just use a video object to embed vimeo or youtube: click "Insert" button in the toolbar, then choose video and finally embed from youtube or vimeo, you will just need to enter the viedo URL.

To embed from other sources, use a Smart Object which is an HTML code container where you can paste the embed code.

Hello, the opacity value goes 0 to 1, so you have to use 0.2 for 20%

Hello
what do you mean with "slider feature" ?
For interactivity, take a look here https://docs.pubcoder.com/pubcoder_events_and_actions.html
As for cursor effects, yes you can do it with CSS https://docs.pubcoder.com/pubcoder_code.html#custom-css-code

just select an image, and add an action to the Tap event in the Interactivity panel at the right of your project window.
You can use a Go To Page action to link to another page or Open URL action to launch a website.

Try to just restart your computer

You have to create a CSS class and add it to the masked image object.
https://stackoverflow.com/questions/18551277/using-external-images-for-css-custom-cursors

Hello Zahir,
you can get the counter value and display it in a text object using a "run javascript" action like this in the counter "value change" event:

var cnt = PubCoder.getCounterValue("#obj120");
PubCoder.switchText("#obj138", "Counter Value: " + cnt);

please change the #objXX to your object IDs.

you can download an example here: https://www.dropbox.com/s/4k2tvyfjjzutxiu/counter.pubcoder?dl=0

User can control the volume of Read Aloud and Soundtrack using the controls in the toolbar of the reader