Thanks to all those suggestions given, a lot I'm not sure of.
However I down loaded the same files onto the PC (from scratch) and had
the same problem with installed viewer: not surprising as they are the
same version of Mint. However on the PC I had 2 copies of Gimp, one a
version 2 (as on the laptop), the second version is a flatpack and is
version 3.2. Tried the original installed version(2) and same problem
as on Laptop. Tried the flatpack(3) and that version worked, it showed
Thumbnails and I was also able to export to a JPG. With over 237 files
to convert it would be a long slog.
Some of the suggestion from Terry:-, a lot of those did not show on my
Mint upgrade programme so not tried.
May try Stephens code on a small selection but not today.
May bite the bullet and install the latest Gimp from Flatpack and delete
the laptop installed package.
Thanks for your help.
Clive.
On 23/05/2026 16:47, CA Wills via dorset wrote:
Just got back from visiting family in Switzerland and also the German
Lace Congress (yearly visits). While away a friend put some pictures
on the Web for all to see and download. They also gave instructions
but not for Linux (as usual!).
The files are in HEIC (HEIF) format from Apple I-phones. I've checked
some instruction but they all date back to pre 2025 versions of Mint.
Details: I have installed the Mint 22.3 (latest updates) 64bit,
Cinnamon, Kernal=-generic.
on my laptop:-
heif-gdk-pixbuf 1.17.6-1ubuntu4.3
heif-thumbnailer 1.17.6-1ubuntu4.3
libheif-plugin-anmdec 1.17.6-1ubuntu4.3
libheif-plugin-libde256 1.17.6-1ubuntu4.3
lidheif1 1.17.6-1ubuntu4.3
These are all part of Mint listings for heif. Not sure if the aomdec
file is required as don't know what is is connected with.
Tried running with Digikam, Gimp and the installed viewer but none can
open the files. (file not recognised)
Any other help lease, It can't be impossible, but not sure next
step. I know it's a high density file from newer 'phones so must be
'fixed' by now?
Thanks for any help as I've over 260 files to 'see' (or should I say
Lily needs to see).
Clive
--
*C Wills***
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