Inside Document Library, some files will open inside the browser (.xlsx & .vsdx), while other (.docx & .txt) will open with the client application

Question

I am working on a team site inside SharePoint on-premises 2013. and I have a document library where i set to open the documents in the browser, as follow:-

Now i uploaded multiple files with different formats such as; .xlsx & .vsdx & .docx & .txt & .pnp.

But i have noted the only the Excel(.xlsx) and Visio (.vsdx) will open in the browser, while the other file formats (.docx & .txt & .pnp) will show a dialog as follow when i click on them:-

so i am not sure what control this? and is there a way to force all the file types to open in the browser? and edit them directly inside the browser?

Second question. Now even when i open the Excel and the Visio inside the browser, i can not directly edit them and save.. where i have to click on "open in excel" or "open in visio">> then edit them inside the related client application..

so i am a bot confused on what is controlling these behaviors ?

Answer 1

Please install OWA services if you want to Edit or view office files in browsers, If you have excel services you can able to view Excel files but cant edit