Remove the selected images from the darktable database. Those images will not be shown in lighttable anymore, but remain on the filesystem. As darktable stores XMP files with your development parameters on disk, you can later fully reconstruct your work by just re-importing the images.
When backing up your RAWs make sure to also save the XMP files!
Eliminate the selected images from the darktable database and remove the image files from their respective locations. Depending on the setting of config parameter “send files to trash when erasing images” (Section 8.1, “GUI options”) this either irrevocably deletes the images from filesystem or puts them into your system's trash bin.
See also preference option “ask before erasing images from disk” (Section 8.1, “GUI options”). If this configuration option is not active, darktable will delete/trash the file(s) without further question.
When deleting an image with duplicates, darktable keeps the original input file on disk until the last of the duplicates gets deleted.
Physically move selected images (parent file plus all accompanying XMP sidecar files) to another filesystem folder. darktable does not overwrite images in the target folder. If an input image with the given filename already exists in the target folder the source image is not moved but kept where it is.
Physically copy selected images (parent file plus accompanying XMP sidecar file) to another filesystem folder. If an image with the given name already exists in the target folder it does not get overwritten – instead a new duplicate with the given history stack is generated.
Create a high dynamic range image from the selected images, and store it as a new source file in DNG format. Images need to be properly aligned, which implies that they have been taken on a sturdy tripod. You can also generate HDRs with programs like Luminance HDR, and later import them into darktable for further processing (see Section 188.8.131.52, “Supported file formats”). Note that darktable will only creates HDR images from raw files.
Create a virtual copy of selected images within darktable. It allows testing different developments for the same image, for example. Duplicate images share the same parent input file, but each have their own XMP sidecar file.
Perform a counter-clockwise or clockwise rotation on selected images. The third button resets the image rotation to the value in the Exif data. This feature is directly linked to the orientation module (see Section 184.108.40.206, “Orientation”) – adjustments are converted into history stack items of that module.
This action will create local copies of the selected images into the local drive. These copies will then be used when the original images are not accessible (see Section 2.2.9, “Local copies”).
This action will synchronize the XMP sidecars of the temporary local copy and the copy in external storage, if needed, and will remove the local copies. Note that if a local copy has been modified and the external storage is not accessible the local copy won't be deleted (see Section 2.2.9, “Local copies”).
Create a new group from selected images (see Section 2.2.6, “Image grouping”).
Remove selected images from the group (see Section 2.2.6, “Image grouping”).