For modern browsers you can use
accept on an
input element, you will have to add all the files you can
accept and leave out the ones you reject. With just HTML this is all you
etc. Since HTML is not a programming language what you can and can't do is
<input type="file" accept="[everything but .exe and
As you mentioned you are going to have to place a good amount of files
here. Unfortunately as of right now there is no
attribute you can add.
Note: For support in order browsers you are going to need to
file. Otherwise from what I shown above is all you can do in just HTML.
will be easier that way.