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 Forum index » Advanced Topics » Additional Software (PETs, n' stuff) » Graphics
Scale2pics - batch image scaler
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Joined: 24 Aug 2005
Posts: 13644
Location: Karlsruhe, Germany

PostPosted: Fri 16 May 2008, 04:09    Post_subject:  Scale2pics - batch image scaler
Sub_title: only some kb, no big ImageMagick needed

http://dotpups.de/dotpups/Graphics/Scale2pics.pet (13 kb)
Mirror: http://puppyfiles.ca/dotpupsde/dotpups/Graphics/Scale2pics.pet

Requires Gtk2, was compiled in Puppy 3.

If the binaries do not work in your Puppy, you can compile them like this:

cd /usr/local/Scale2pics

usage: (scale2pics)

This converts a whole folder.

scale2pics /usr/share/backgrounds /root/testpics/ 30 20 85 jpg
(the targetfolder may not exist yet)

This will do:
- create a folder /root/testpics/
- create in this folder scaled jpg-files with a maximum size of 30x20 pixel, with 85% quality from all pictures in /usr/share/backgrounds.

usage: (scale2pic)

This converts a single file.

scale2pic /usr/share/backgrounds/default.jpg /root/testpics/output.png 30 20 60
(the targetfolder here must exist already)

Supported input formats: did not try, at least these work: xpm, png, bmp, jpg

Supported output-formats: png, bmp, jpg, ico (NOT xpm!)

Both are scripts.
They use 4 binaries. To see how those work, you can look at the script:

Note: the scripts keep the aspect-ratio.
if you have a source of 320x200, and give as targetsize 32x1000, then you will get 32x20, as the sizes define the maximum values, if the aspectratio allows them.
This is very fine, if you want to batch-convert pictures for websites, where pictures should never be higher or wider than 50px for thumbnails.


my recommended links
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Joined: 20 Apr 2008
Posts: 13
Location: Exeter, Devon

PostPosted: Sun 25 May 2008, 09:01    Post_subject:  

Many thanks MU
This is simple (for me to use Very Happy ) and works!!
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Joined: 25 Feb 2010
Posts: 1401
Location: England. Dell Inspiron 1501. Dpup

PostPosted: Mon 24 May 2010, 22:42    Post_subject:  

Sorry for bumping old thread but this is a great little .pet

wasted so much time resizing 1 file at a time in gimp.

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Joined: 10 Nov 2009
Posts: 618
Location: Austria

PostPosted: Mon 04 Apr 2011, 14:23    Post_subject: works in 5.1 quickset edition  

works still in 5.1. quickset edition without hassle.
great! Very Happy
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Joined: 23 Oct 2006
Posts: 1287
Location: Ukraine

PostPosted: Tue 05 Apr 2011, 06:24    Post_subject: picscale  

Dear Puppians,

I did this a while back and seems to work. It is also pretty small and can be used in scripts for rescaling various file types using only gdk calls (like Mark's). Please have a look http://www.murga-linux.com/puppy/viewtopic.php?mode=attach&id=34335. I included a binary.... The reason I did this was because, as I recall, Marks version did not handle the alpha channel (png transparency) properly.

With kind regards,
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Joined: 07 Jul 2010
Posts: 897
Location: .ar

PostPosted: Wed 06 Apr 2011, 00:26    Post_subject:  

vovchik wrote:
...handle the alpha channel (png transparency) properly...

Very Happy


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Joined: 06 Jan 2008
Posts: 1851
Location: PORT-BRILLET (Mayenne - France)

PostPosted: Tue 21 Aug 2012, 05:01    Post_subject:  

Thank you! There are so many "forgotten" things in this Forum...

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