Force File Download

Hello,
Hope you are well.
Could you please share related website link to check the issue properly.
However, If you are using remote url then download or open in browser will not depends on wpdm pro, If you want to force download, you need to upload it with wpdm pro or use server file browser to attach file.
Thanks

Hello,
We have already content-deposition set for audio/video files. You can find it in download-manager-master\src\__\FileSystem.php
However, you can modify that also you can do it using javascript for this.
Thanks

Hello,
If you want the user to be prompted to save the data you are sending, such as a generated PDF file, you can use the » Content-Disposition header to supply a recommended filename and force the browser to display the save dialog.

header("Content-Type: {$filetype['type']}");
 header("Content-disposition: attachment;filename=\"$filename\"");

You can also check this

Adding this codes in functions.php will work fine. But before that please make sure if firefox do the downloads as you want. for that you can manually try to add any pdf file and add that code manually without any php variable.

However, If you want to force download, please always attach the file using the server file browser or upload directly using wpdm.

Thanks