Software to convert JPG images into specific file size on disk?

3

Is there any (free?) software that will help me to convert existing JPG files into a specific file size on disk?

(I assume that the software will estimate accurately compressed file size during the save.)

Pablo

Posted 2011-01-13T09:08:03.587

Reputation: 4 093

A "certain size" as in pixel dimensions or as in file size? – Mokubai – 2011-01-13T09:22:25.070

I'd say file size, @Mokubai, given the reference to compression. – Arjan – 2011-01-13T10:31:38.417

do you want to create dummy files, or convert existing files into files of a specific disk size? – Arjan – 2011-01-13T10:33:20.723

convert existing. file size on disk – Pablo – 2011-01-13T10:52:59.637

(Next time please note the "edit" link. Thanks and success!) – Arjan – 2011-01-13T12:19:41.497

Answers

6

Irfanview is pretty good and does it for jpeg- just install it WITH the plugins and setting file size should be a save option. I quite like Irfanview in fact, it's light, easy, quick and does batch operations nicely :)

Tomcat

Posted 2011-01-13T09:08:03.587

Reputation: 254

4

The command line ImageMagick supports a maximum file size:

-define jpeg:extent=400kb

Arjan

Posted 2011-01-13T09:08:03.587

Reputation: 29 084

2

Paint.NET gives the file size when saving:

Show file size on saving

Simply change the quality setting to get the size you want.

ChrisF

Posted 2011-01-13T09:08:03.587

Reputation: 39 650

1

For quick and easy image resize I always use and recommend Picture-Resize. It's very easy to use and blazing fast.

http://www.rw-designer.com/picture-resize

It does not have a GUI, you just change the filename in order to change the parameters of the image resize operation. A very unusual but cool way to operate.

Patareco

Posted 2011-01-13T09:08:03.587

Reputation: 11

1The question seems to be asking about file-size not image dimensions – RedGrittyBrick – 2011-01-13T10:28:12.140

yep, it's about file size, not dimensions – Pablo – 2011-01-13T10:54:29.857

you can do a file size resize with the program I mentioned – Patareco – 2011-01-17T03:53:24.977

Upvote because this program is one of the most versatile applications to perform batch image resize. For some operations irfanview is quite overkill. This program is specially good for sending it to family; for example the program application PhotoResizeK1000NMROEH.exe will resize images to 1000KB preserving everything. The user will only have to place it in the desktop and drag/drop the pictures or folders to convert. It does not get easier than that (in the webpage the program settings can be configured) – obaqueiro – 2011-10-08T11:19:34.547

0

Irfanview with the Save-for-Web plugin does this.

  1. Install irfanview.
  2. Install and download the plugin. The recommended way to do this is to just download and install the "All plugins" package from their website.

In irfanView, the plugin is accessible via "File", "Save for web (plugin)". There's a "Compress for size" option that lets you enter a desired file size and then makes an approximation of what you entered.

Tobias Plutat

Posted 2011-01-13T09:08:03.587

Reputation: 5 051