Ubuntu 9.10: how can i resize the file size of a jpg file in ubuntu

Asked by Murukan

is there any solutions in ubuntu to resize the file size of a jpg file. in windows wee can use paint to reduce the size of a large jpg file. like that paint application any thing available in ubuntu software center? i tried to download applications from software center but system shows " "Requires installation of untrusted packages
The action would require the installation of packages from not authenticated sources."" . how can i clear this problem? from where i can download the required applications?

ProblemType: Bug
Architecture: i386
Date: Sat Dec 10 00:02:22 2011
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu-Netbook-Remix 9.10 "Karmic Koala" - Release i386 (20091028.4)
Package: software-center 1.0.2
PackageArchitecture: all
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: software-center
Tags: ubuntu-unr
Uname: Linux 2.6.31-14-generic i686

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Marcel Stimberg (marcelstimberg) said :

Thank you for taking the time to report this issue and helping to make Ubuntu better. Examining the information you have given us, this does not appear to be a bug report so we are closing it and converting it to a question in the support tracker. We understand the difficulties you are facing, but it is better to raise problems you are having in the support tracker at https://answers.launchpad.net/ubuntu if you are uncertain if they are bugs. You can also find a valid support at http://askubuntu.com or posting your question in the support forum of your local Ubuntu's community. For help on reporting bugs, see https://help.ubuntu.com/community/ReportingBugs.
Ubuntu Bug Squad volunteer triager

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Marcel Stimberg (marcelstimberg) said :

Ubuntu 9.10 reached EOL on April 30, 2011
Please see this document for currently supported Ubuntu releases:

On current Ubuntu releases, you can resize images using the shotwell image viewer that is installed by default. Right-click the file and choose the shotwell image viewer (otherwise the default viewer is used that does not support resizing), then use "Save As". This will present a dialogue where you can change the image size and/or quality.

Some other options are given here: http://askubuntu.com/questions/1164/how-to-easily-resize-images

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marcobra (Marco Braida) (marcobra) said :

To solve the "...installation of packages from not authenticated sources." please open a terminal and type:

sudo apt-get update
sudo apt-get dist-upgrade

The system will ask you for a password type your password, you will not have any screen feedback typing your password, so type the press enter.

Then from software-center please install


to resize, edit, and do a lot of stuff on images, but there are also other software to do it...
or you can also do it without any particular software from nautilus by right click on a image...

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marcobra (Marco Braida) (marcobra) said :

Oh! Ubuntu 9.10 so please upgrade your distribution to 10.04 Long Term Support release then you will update it to the next LTS release in April 2012 if you want help ask here...

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