Lightroom: Deleting folder doesn't delete smart previews

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  • Updated 11 months ago
  • (Edited)
Add the ability to remove the smart preview from the hard drive. When I delete a folder from a library that I do not need, the smart previews remain on the disk.
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Алекке Блажин

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Posted 11 months ago

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SatishT, Employee

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Hi,

I could not replicate this behaviour on my machine. Lightroom did delete smart previews when the image is deleted from the Library module.
What is the version of Lightroom you are using?
Also, what are the steps you are following? It can help us replicate the issue at our end.
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Todd Shaner, Champion

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Satish, sorry for the delay in replying–I've been on vacation. Concerning the Standard and 1:1 Previews they do not always appear to be deleted...even after some period of time. I've been away from my LR desktop system for 12 days and I'm now showing 36,437 Previews files in my LR catalog and only 32,152 Photographs inside LR (4,285 Undeleted Previews). No new files have been imported over those 12 days. I typically delete about ~10% of my image files (10% 32,152 = 3,215)  so it appears none of the Previews are being deleted when images are removed.

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Robert Frost

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You haven't got any face previews have you? They are separate from normal previews and add to the total.


Bob Frost

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SatishT, Employee

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Todd, can you try performing optimize catalog operation via menu option 'File->Optimize Catalog' and share the results?
This operation will clear any previews that may be leftover for deleted images.
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Todd Shaner, Champion

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Bob, if you're referring to Face Recognition I've never used it.

Satish, I always have Optimize Catalog and Test Integrity checked when I do a catalog backup. I just added a little over 1,000 image files, did a LR Backup, and restarted LR. Here are the results:

Previews Folder  37,531files
All Photographs  33,229 files
Difference             4,302 files (prior difference 4,285)
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Robert Frost

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At various times over the life of LR, I have found that the previews become out-of-sync with the catalog. I just delete all the previews, previews database, and acr cache, and generate new previews.

The only problem nowadays is that with the slowdown of rendering previews with time, it takes forever (or you have to keep getting up in the night to restart LR!!).

Still, it makes Library nice and snappy again.

As an alternative, you could just export all images with previews (not originals) and it should leave any superfluous previews behind.

bob Frost

(Edited)