Digikam file takes up a lot of space

[WILDLIFE-HELP A.N.]

Thanks for the advice Manuel and Gilles. I appreciate your time.

I will have a look at what I can do following your instructions.

Kind Regards,
Philip



Sent from my Samsung Galaxy smartphone.


-------- Original message --------
From: Gilles Caulier <caulier.gilles at gmail.com>
Date: 2018/01/06 12:43 (GMT+02:00)
To: digiKam - Home Manage your photographs as a professional with the power of open source <digikam-users at kde.org>
Subject: Re: Digikam file takes up a lot of space

I will add detail here : the thumbnails database store small image using wavelets compression algorithm (PGF open source format). It's optimized a lots compared to open desktop way used in the past which store thumbnail in PNG (LZW compression).

Gilles Caulier

2018-01-06 11:37 GMT+01:00 Manuel Bock <mbs at mbsnet.de<mailto:mbs at mbsnet.de>>:
Hi Philip,

the thumbnails-digicam.db is NOT the database containing all the metadata, but stores the thumbnails of your collection (smaller size preview pictures). Thus digicam can even show you previews of pictures located on offline media not connected to your laptop currently. If you are running out of space, you could

* either store your pictures on external media, after processing them

I keep my images of the current project on my laptop and move the older ones to an external storage (asides of backup and archiving, of course)

* or, if even this does not help, have digikam show the original pictures and skip generating thumbnails - which might make scrolling through your collection slower and you loose previews of offline collections

digikam -> Preferences -> Preview -> Preview shows full picture - is, as far as I remember, the option to make it skip generating thumbnails. You can then delete thumbnails-digicam.db. If it is not regenerated by rescanning your collection on next start, this was the right setting. (Keep in mind: I am using a different interface language, so don’t stick to the letter for the names of the options mentioned before.)


regards
Manuel


Am 06.01.2018 um 11:06 schrieb WILDLIFE-HELP A.N. <wildlife.help at durham.ac.uk<mailto:wildlife.help at durham.ac.uk>>:

Hi All,

I use digiKam to tag camera trap images for research purposes. I run it on macOS Sierra version 10.12.6 with 2.9 GHz i5 processor, 8 GB RAM, and 120 GB hard drive.

In my database folder there is a file called: "thumbnails-digikam.db" which takes up over 38 GB of space and I am constantly running out of space on my MacBook. I was told that you should not store your database on an external drive. Is this true? If I change the directory of my database to an external hard drive would this affect it in anyway?

What about on Windows OS, can you have the database directory on a external hard drive?

Thank you for your time.

Kind Regards,
Philip Faure

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