Gimp-Forum.net › GIMP › Extending the GIMP
PNG-to-PNG batch conversion (preserving Alpha Ch.)

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Thread Modes
PNG-to-PNG batch conversion (preserving Alpha Ch.)
michele.bartolettistella Offline
Newbie
**
Posts: 2
Threads: 1
Joined: Oct 2017
Reputation: 0
Operating system(s):
  • Windows XP
  • Windows (Vista and later)
#1
10-19-2017, 08:29 AM
Dear Forum,

I need to halve the resolution of about sixty .png pictures, from 600dpi to 300dpi, preserving their Alpha Channel (transparent background).

I tried with XnView, which provides a very complete batch conversion/editing tool, but, ulnluckily, in the new 300dpi files Alpha is suppressed.

What can I do?

Can GIMP work on these several files this way, with a unique batch action?

Thank you.
Find
Reply
rich2005 Offline
Administrator
*****
Posts: 7,132
Threads: 155
Joined: Oct 2016
Reputation: 1,003
Operating system(s):
  • Linux

Gimp version: 2.10
#2
10-19-2017, 08:53 AM (This post was last modified: 10-19-2017, 08:53 AM by rich2005.)
The BIMP plugin will work https://alessandrofrancesconi.it/projects/bimp/

Just checked with a couple of (made up) 600 ppi png's with transparency.

Add your images, folder or individual, add the 2 procedures, resize and 'change format', set the output destination.

screenshot: https://i.imgur.com/lr2he8E.jpg
Find
Reply
michele.bartolettistella Offline
Newbie
**
Posts: 2
Threads: 1
Joined: Oct 2017
Reputation: 0
Operating system(s):
  • Windows XP
  • Windows (Vista and later)
#3
10-21-2017, 03:10 PM (This post was last modified: 10-21-2017, 03:30 PM by michele.bartolettistella.)
Thank you!
Just what I was searching for.

Idea

(10-19-2017, 08:53 AM)rich2005 Wrote: The BIMP plugin will work https://alessandrofrancesconi.it/projects/bimp/
Just tried and verified: Alpha-Channel still is also in the new pictures.

Smile

It works!
Find
Reply


Forum Jump: