Batch image resizer with GIMP photo editor batch processing

Quick links

Batch photo resizer

In various occasions, it is useful to update in one shot a batch of photos. This operation takes a few minutes to setup using the Batch image manipulation plugin for the GIMP.

What is batch processing

It means processing as many files as you want at once, for example a batch resize will resizer thousands of files in one operation.

Is there a way to resize multiple pictures at once

In only a few clicks, it is possible to update as many images as you want - batch shrink images, batch convert images to jpg, batch crop images... and any kind of batch image processing.

Photo resizing software for windows 10

First of all, download and install the GIMP Batch image manipulation plugin - assuming, of course, that you already have installed the great GNU Image Manipulation Program, the GIMP.

BIMP. GIMP Batch Image Manipulation Plugin for GIMP
GIMP download windows free image resizer

Resize multiple images at once

You can then start The GIMP, and launch the Batch image manipulation plugin from GIMP File menu.

As a batch processing example, let's optimize about 15000 images of all kind (jpg, png, ...), for a total size of 1.5GB. Two operations will be necessary for the batch resize jpg : batch picture resizer, and batch convert to jpg.

First step, resize action from the BIMP standard options. Select then your options - in my case, resize them all to 200 pixels wide, preserving their aspect ratios.

Batch image resizer with GIMP photo editor batch processing : Select resize action
Select resize action
Batch image resizer with GIMP photo editor batch processing : Resize options
Resize options

Resize pictures windows 10

Then, add a second action, change of format and compression. Here again, it is possible to select a few options, the more important being the quality. But feel free to play with the advanced paramaters and see what is working best for you.

Batch image resizer with GIMP photo editor batch processing : Select change format and mass image compressor
Select change format and mass image compressor
Batch image resizer with GIMP photo editor batch processing : Change format and compression action to jpg options
Change format and compression action to jpg options

How to optimize pictures for website

Now that all GIMP actions are setup, select your images - one by one, or folder by folder It took about 5 minutes to generate the list of my 15 000 images.

Batch image resizer with GIMP photo editor batch processing : Add file folder images
Add file folder images

Check the "Keep folder hierarchy" option in case you have subfolders. The resulting images will follow the same hierarchy in the new folder.

Finally, click on Apply, and wait for the magic to happen. In my example (about 15 000 images, 1.5GB), it took about 45 minutes to complete the whole pic resize batch. This of course depends on the resize image processing power.

Batch image resizer with GIMP photo editor batch processing : End of photo manipulation and success message
End of photo manipulation and success message

How to optimize images for page speed

Result is as follow : 1.5GB before batch resize and format / compression change, and 170MB after. This is how powerful and easy the GIMP is !

Batch image resizer with GIMP photo editor batch processing : Photo folder status before GIMP batch processing
Photo folder status before GIMP batch processing
Batch image resizer with GIMP photo editor batch processing : Folder image status after batch process photos
Folder image status after batch process photos

What is a good google page speed score

For example, this allowed me to pass the Google PageSpeed test Optimize images on a website, going up from a score of 17 on mobile to 51, and up from 35 to 59 on desktop.

PageSpeed Insights
Optimize Images PageSpeed Insights Google Developers
Batch image resizer with GIMP photo editor batch processing : Google site speed score before image optimization of 17 on mobile
Google site speed score before image optimization of 17 on mobile
Batch image resizer with GIMP photo editor batch processing : Google page speed score after image optimization of 51 on mobile
Google page speed score after image optimization of 51 on mobile
Batch image resizer with GIMP photo editor batch processing : Score before image optimization of 35 on desktop
Score before image optimization of 35 on desktop
Batch image resizer with GIMP photo editor batch processing : Score after image optimization of 59 on desktop
Score after image optimization of 59 on desktop
Free photo resizing software

How to optimize images for website

Using the free photo editor app GIMP as an image resizer for windows, this all in one solution will reduce picture size, which will improve the pagespeed insights website speed test. After the resize pictures, they will use less space, and will be faster to download on the Web, which is also what website optimization is all about. Do a check website speed after the gimp resize image and see for yourself how your speed score improved !

Resize multiple images is pretty easy with a free picture resizer such as GIMP image editor, and is great for your website speed optimization.

Similar articles

Comments (0)

Leave a comment