Remository

Remository has always supported thumbnail images - you can see some on this site.

In 3.2x and earlier, the option for a thumbnail required setting a URL that pointed to a suitable image. Only a single thumbnail was supported. The URL could be completed during file upload, or by the administrator editing the file details.

For 3.4x the default is a new mechanism. You can set the number of permitted thumbnails in the config, and the uploader or admin has the option (from the file information screen) of adding or deleting thumbnail images. The actual image files are uploaded and hosted by Remository. If you set the config to zero thumbnails, then the old mechanism will be active (for backwards compatibility).

The config also permits you to specify the size for new style thumbnails and also the size for a larger version to which the thumbnail will optionally link. When an image file is uploaded using the update facility from the file information page, the large and small images are automatically created, retaining the original aspect ratio and fitting within the specified sizes.

Note that the new style mechanism will not function unless your PHP has the GD image handling library installed - most PHP installations have it.