Unexpectedly large files after saving

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sklnner
Posts: 12
Joined: Sat Jun 23, 2012 9:50 pm

Unexpectedly large files after saving

Post by sklnner » Fri Jan 31, 2020 7:14 am

hi, i know this has been answered again and again but i failed to find a topic because most topics are about the reverse situation which can be described with the same set of words

so i have a jpg file with a filesize of 861 kb
i use
- Image > Map > Automatic Levels
- crop/remove a 3 pixels wide line of the top
- save as jpg

the result is 5746 kb which is more than 5x the original filesize
i get curious so i reopen the file and just save the file as jpg, no other editing
the result is 2734 kb which again is about 3x times the original filesize

why is the saved file filesize so large and what is the correct way to keep the filesize down?
thank you for your time

cday
XnThusiast
Posts: 2276
Joined: Sun Apr 29, 2012 9:45 am
Location: Cheltenham, U.K.

Re: unexpectedly large files after saving

Post by cday » Fri Jan 31, 2020 8:08 am

sklnner wrote:
Fri Jan 31, 2020 7:14 am
Why is the saved file filesize so large and what is the correct way to keep the filesize down?
The settings used for saving are in the viewer, File > Format settings... -- Write tab

Rather hidden, I'm afraid, due to a limitation in the Qt tool set used, I understand... :(

sklnner
Posts: 12
Joined: Sat Jun 23, 2012 9:50 pm

Re: unexpectedly large files after saving

Post by sklnner » Fri Jan 31, 2020 9:45 am

cday wrote:
Fri Jan 31, 2020 8:08 am
The settings used for saving are in the viewer, File > Format settings... -- Write tab
Rather hidden, I'm afraid, due to a limitation in the Qt tool set used, I understand... :(
oh thanks a lot, actually i should have seen that and not start a new thread about it

cday
XnThusiast
Posts: 2276
Joined: Sun Apr 29, 2012 9:45 am
Location: Cheltenham, U.K.

Re: unexpectedly large files after saving

Post by cday » Fri Jan 31, 2020 9:48 am

sklnner wrote:
Fri Jan 31, 2020 9:45 am
cday wrote:
Fri Jan 31, 2020 8:08 am
The settings used for saving are in the viewer, File > Format settings... -- Write tab
Rather hidden, I'm afraid, due to a limitation in the Qt tool set used, I understand... :(
oh thanks a lot, actually i should have seen that and not start a new thread about it
It's not obvious, and contrary to normal save interface design, but I understand there is currently no solution in sight. :(

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