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# 11.4 Cache and Data Maintenance

Thumbnails and other cached data can be maintained from the dialog accessible by selecting Thumbnail maintenance from the Edit menu of the main window.

GQview thumbnail cache

The utilities listed here operate on the GQview caching mechanism. This also includes the data cached for the search and find duplicates utilities.

Clean up: Removes thumbnails and data for which the source image is no longer present, or has been modified since the thumbnail was generated.

Clear cache: Removes all thumbnails and data stored in the user's home folder: $HOME/.gqview/thumbnails.

Shared thumbnail cache

The utilities listed here operate on the shared thumbnail mechanism.

Clean up: Removes thumbnails for which the source image is no longer present, or has been modified since the thumbnail was generated.

Clear cache: Removes all thumbnails stored in the user's home folder: $HOME/.thumbnails.

Create thumbnails

This utility will render thumbnails using the current thumbnail caching mechanism, as determined in preferences.

Render: Pre-render thumbnails for a specific folder, the utility has the following options:

Include subfolders: Enable to include all images contained in the subfolders of folder.

Store thumbnails local to source images: The generated thumbnails will be stored local to the source images, if you have the permissions to write to the folder containing the images.

Metadata

This utility operates on the data store for keywords and comments located in the user's home folder: $HOME/.gqview/metadata.

Clean up: Removes keywords and comments for which the source image is no longer present.

File locations

The various file locations and their use are listed below. <HOME> refers to your home folder and <SOURCE> refers to the folder containing the image.

Folder or File name | Description
--- | ---
Thumbnails
<HOME>/.thumbnails | Shared thumbnail cache folder.
<HOME>/.gqview/thumbnails | Classic GQview thumbnail cache folder. Also used to cache data used for the search and find duplicates utilities to increase the speed for subsequent searches.
<SOURCE>/.thumbnails | Local thumbnail cache folder.
Metadata (keywords and comments)
<HOME>/.gqview/metadata | Metadata stored in user's home folder.
<SOURCE>/.metadata | Metadata stored local to source image. Requires option to be enabled in advanced preferences.
Collections
<HOME>/.gqview/collections | Default location for GQview collections, collections in this folder will appear in the sort manager sidebar.
Preferences
<HOME>/.gqview | GQview preferences folder.
<HOME>/.gqview/gqviewrc | GQview preferences rc file.
<HOME>/.gqview/history | Historic data such as last several folders visited, bookmarks, and recently used collections. Also contains default print settings.
<HOME>/.gqview/accels | Keyboard shortcut mapping.
Safe Delete |
<HOME>/.gqview/trash | Default location of the safe delete folder.

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