ViewerJS doesnt stop loading

[jeffersonalomia]

I try to upload a .pptx file to my server folder named "lesson" and copy that file from the same folder and rename that copied file with .odp extension.
I used ViewerJS plugin and it really work nicely when i open a pdf file.

However. my problem is that when i try to link the .odp file, ViewerJS doesnt finish loading. How can I solve this? Please help

Heres my code for tranforming the copied .pptx file to .odp. file

$oldname = $file;
$newname = basename($file,".pptx");
$n = $newname.".odp";
copy("lesson/".$oldname,"lesson/".$n);

[rproffitt]

http://viewerjs.org/ doesn't list pptx support. Renaming does not change what the file is. You may have to turn it into some ODP or PDF first. Examples at https://www.google.com/#q=pptx+to+odp

[jeffersonalomia]

Do you know any free plugins so that i can view an office documents on my website offline?