Can I reduce the number of old lrcat?

Old Lrcat take nearly a third of my 500 GB hard drive. Can I delete to save space?

Yes, no problem deleting the file .lrdata, you can go ahead and delete this file.

Previews.lrdata is the file that is automatically created when the spearhead of a new catalog.

And speaking of the last catalog backup, it will be a zipped folder, so you must first decompress the file first and then double-click Catalog.lrcat.

Tags: Photoshop Lightroom

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