Program to automate image resize

Question

Is there any free program that can take images from a folder resize them to a given size (or ratio) and then save them to another folder?

In photoshop I could do it with by using automate, but I don't have photoshop on the computer at which I'm at right now so I would need some free program.

Answer 1

XnView can do this.

• www.xnview.com

Here is tutorial

• http://graphicssoft.about.com/od/xnview/qt/batchresize.htm

Answer 2

Imagemagick's mogrify tool can resize an entire folder by dimensions:

mogrify -resize 50x50 *.jpg

or percentage

mogrify -resize 25% *.jpg

Note that this replaces the original, so copy them to a folder first and work on them there.

Answer 3

Xnview is good, but i like irfanview more, its faster(i didnt run any benchmark, just my perception)

Answer 4

There is an even easier way, using the Windows PowerToy resizer. It installs itself as a contextual menu item.

Answer 5

I tend to use either Windows Live Photo Gallery or nconvert. The latter one is a command-line tool but supports a plethora of file formats and things it can do. Resizing images is a very simple matter, though:

nconvert -ratio -resize 1000 1000 -o "$\small\%" *.jpg

This would resize all JPEG images in the current folder to a maximum of 1000 pixels width or height (whichever is larger), keeping the ratio for resizing so it doesn't get skewed and writing the image into the subfolder "small" under the same name. (The folder should exist beforehand, though, I think.)

Answer 6

Irfanview Batch converter can do resize and convert and there is a nice tutorial about that -> Tutorial Irfanview Batch converter

Answer 7

Just to round out the list of options, the FastStone Image Viewer will batch resize, rename, edit, and more. Plus there's a portable version you can tote on your USB stick for editing on the go.

Its also worth mentioning that in XP there is a Power Toy that works ok in limited circumstances.

Answer 8

You can also try "Fast Image Resizer". It's small, free and can handle folders with images. Very suitable for the "end user".

Answer 9

I like XnView, but for resizing all the pictures in a folder and applying some filtering or file type conversion like PNG -> JPG, I like PhotoFiltre. I especially like how quickly it loads.

You might also find Paint.Net very good for more detailed editing.

Answer 10

Here is an image resizer that mimics the XP powertoy functionality, but works in newer versions of windows as well. I just used it to batch process some images, and it worked perfectly.

Image Resizer