Why the other extensions do not load without internet except pdf?

[husnainninesol]

I have implemented this github code. But unfortunately it do not load the files if the internet is not available.
Is it the problem at my side or its the requirement?

[hanlyjiang]

I have implemented this github code. But unfortunately it do not load the files if the internet is not available.
Is it the problem at my side or its the requirement?

In this library, except for pdf reading(mupdf is used), Other file reading capabilities depend on a service called TBS, but the part of TBS that actually implements reading needs to be downloaded online (although it is done automatically), so if you read non-PDF files, The network is required.