Also see the Monitoring tab options and note that the file extensions allowed there may be different from those specified in this section.
If creating or editing a Download from the button on the Control panel, then the default file extensions when uploading in the backend are those specified here, that is are zip, rar, pdf, doc and txt.
But if using Auto Monitoring, for example by using the button, then the default file extensions are zip, rar,exe, pdf, doc,gif, jpg and png.
There are five sections:
Backend Upload options;
Allowed File Extensions for images and file uploading;
File Naming options;
Notes on Uploader log.
Backend Upload Options
There are four options that relate to uploading a file when creating or editing a Download in the Backend. These are 'Uploader Runtime', 'Maximum Files Size (MB)', the 'Chunk Size' and the 'Unit fo Chunk Size'.
The default settings for these options are as shown opposite.
The default of 'All runtimes' will auto select a runtime that works in your current browser, except in very particular situations.
If you do experience one of these rare cases the seek assistance in the Forum . (opens in a new wind/tab)
For example on my test site the message is . So technically the maximum size of an upload could be 102 Mbyte. In practice it is advisable to leave say a 2MB margin.
The other two options relate to situations where there is a very poor Internet connection or your upload size is smaller than the size of the file you wish to upload.
The 'chunk size' tells jDownloads to upload in multiple stages with each stage being equal to, or in the case of the last chunk less than or equal to, the specified size.
Allowed File Extensions
But also jDownloads will create a thumbnail of the uploaded image file and include that in the Download as illustrated opposite when using a layout such as 'Files Layout Full Info v3.9', 'Standard Files Layout v3.9 ad similar. That is basically not the 'compact' layouts
The second option, 'Unique Names' will, when set to Yes, generate a random file name so that it does not collide with existing names in the same category.
If set to Yes then three further options 'Width', 'Height' and 'Quality' are shown.
The width and height are set in pixels.
The quality setting , which is a percentage, only applies to jpg images.
If set to Yes then it displays the upload logs when the uploader state changes.
ColinM June 2020, modified May 2023