Clive
Just a suggestion, is there anybody you could give a couple of the
HEIC\HEIF files to to check that they are not corrupt (somebody with a
MAC)? If they are you could spend a long time chasing your tail for nothing.
Tim H
On 01/06/2026 17:53, Clive Wills via dorset wrote:
Hi all
Well I've tried Ralph's suggestions, downloaded 'graphicsmagick' and
eventually got his code to work but it came back on the first file
says there was an 'error' but no indication as to what was wrong. I've
check the installed Digikam 8.2 on the laptop and it says it would
recognise 'heic/heif' files but my copies are in upper case. So I
added the uppercase HEIC & HEIF for recognition but it has not made
any difference.
I've also downloaded the pictures on the PC and will try Ralph's
suggestions on that machine to see if they work.
I'm assuming that I'm missing some code on the laptop installation as
all suggestions have failed; but I can't find what is missing.
Mint 22.3 programme manager does not show any 'Upgrades' for Digikam
or Gimp, if they do they are all as fatpacks and I've had trouble
losing setups and comments on files after 're-installing'.
Clive
On 26/05/2026 06:46, Ralph Corderoy wrote:
Hi Clive,
Tried the [GIMP 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.
Yes, very tedious. Don't do it like that.
Looks like there’s something called ‘heif-convert’:
```
sudo apt install libheif-examples
heif-convert input.heic output.jpg
```
May try Stephens code on a small selection but not today.
If you're happy to convert the hundreds of *.heic to another format just
to view them, then install package graphicsmagick, and
cd directory/with/all/the/heic
gm mogrify -format jpeg *.heic
This will read foo.heic then write foo.jpeg for each of the files
matching ‘*.heic’. It will take a while, and print nothing whilst doing
so.
JPEG is a lossy format, but you may not mind the degradation. If that
matters then use PNG instead, but it will use more disc space and time
than JPEG.
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