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GIMP resize image

GIMP resize image

Introduction to GIMP resize image

Resize image term can understand by the scaling up or down width and height of an image for a different type of end-use purposes of that image so, in GIMP, we use resize features and tools for resizing of image with a lossless property of image quality. We will also get knowledge about the interpolation word, which is a very important term during resizing of the image. We resize image for two purposes: there are two platforms where you will use your resized image; the first one is on a web page and the second one is for print purpose. Both have different settings so let us discuss them.

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How to resize image in GIMP?

In the introduction part of this article, you heard a new word which was Interpolation. When you scale up or scale down any image, it loses some quality due to pixel losses, so the transition between resizing of image is called interpolation. We will learn some option through which we can have maximum command on not to lose the quality of our image or have less pixelating effect during resizing.

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Now take an image which is taken by the camera. You can download it from the internet. I take this image; it has a very large size; you can see the size of the image at the top of the user screen, which is 4032 x 1908.

GIMP resize image output 1

Methods of resize an image in GIMP

We have two ways to resize an image in GIMP. The first is to go Image menu of the menu bar and click on the scale image option of scroll down list.

GIMP resize image output 2

And you will have this type of scale image dialog box. You can change the value of width and height of this image by entering a value of them.

GIMP resize image output 3

If you want to change the width and height of the image separately, then uncheck the Chain link.

GIMP resize image output 4

You can choose a unit during this process from this option.

GIMP resize image output 5

We also have a resolution for web and print purpose for our image. We generally use 72 pixels/in for web purpose and 300 pixels/in for the print purpose. We, for print, use more pixel/in to preserve image quality and not get pixelate much.

GIMP resize image output 6.1

GIMP resize image output 6.2

You can also choose a resolution unit from this list.

GIMP resize image output 7

I will take 1920 x 1080 as the scale value for this image and hit on ok button.

GIMP resize image output 8

And it will scale down like this.

GIMP resize image output 9

The next method is to go to the tool panel and take the scale tool.

GIMP resize image output 10

And click on the image. Once you click on the image, you will have a scale bounding box around your chosen image with a scale parameter box.

GIMP resize image output 11

You can enter any value here through keyboard entry.

GIMP resize image output 12

Or just hold any anchor point of the bonding box with the mouse button and starts to resize your image. You can scale it up or scale it down. The proportion of width and height of the image will be maintained because the chain-link button is On.

GIMP resize image output 13.1

GIMP resize image output 13.2

If you want to change width or height separately, then off chain-link button.

GIMP resize image output 14

And change width or height according to you.

GIMP resize image output 15

GIMP resize image output 15.2

Now let us have a logo on this image on a new transparent layer. I have this EDUCBA official logo for this purpose, and I want to place it at the corner of this image, but how can I resize it? Let us find out.

GIMP resize image output 16

Now choose any one of resizing image option which we discussed above.

I will take the scale tool and make click on the logo image, but you will notice we haven’t any resizing bounding box around our EDUCBA log. In fact, it gives us a bounding box around the image, although we have our logo layer selected.

GIMP resize image output 17

So what to do now? It is just a simple choose Layer option in the parameters panel of scale too.

GIMP resize image output 18

Now again, click on the image and this time, it will select our logo for resizing. Now I am free to resize my logo.

GIMP resize image output 19

You can also do this by choosing the Scale layer option from the Layer menu of the menu bar.

GIMP resize image output 20

Lossless resizing of image:

Let us find out how we can reserve the maximum quality of our image during resize our image. Now choose the scale image option from the Image menu and choose the percentage option in-unit option of width and height of this box.

GIMP resize image output 21

Now the term Interpolation has come. We have a number of option for interpolation. In this list, from top to bottom, you will have better quality management with each option. So let find the effect of each one of this list.

GIMP resize image output 22

First, choose the None option, and I will scale down this image as 10% of its original size.

GIMP resize image output 23.1

output 23.2

I will take 72 as pixels/in.

output 24

It will scale down like this.

output 25

Now zoom this out up to 550 percent, and you can see it goes pixelated.

output 26

Now choose the Linear option with the same scaling percentage.

output 27

See, it has better quality than the None option.

output 28

Cubic will also give you almost the same effect as Linear.

output 29

Now let us see the effect of NoHalo and LoHalo. Repeat all the steps above for both options with 10 % scaling down and 550 % of zoom in. Here you will find the almost same result in both options, but these two will give you a much better result in comparison with the above three options.

output 30

Now let us scale up the EDUCBA logo and see the effect of None and NoHolo interpolation options.

output 31

I will scale it up to 200 % of its original size.

output 32

This is an effect of the None option of scaling up of this logo. It starts pixelating a little bit because we just take 200 %.  Scaling will depends on your computer system space.

output 33

Now do the same for the NoHalo option.

output 34

See the effect. It has a much better result.

output 35

This way, you can resize any image for different purposes with a lossless feature.

Conclusion

Wasn’t it a very good feature of GIMP software because it helps you in many ways for having a perfect size of your image for different platforms. Now go through the different parameters of resizing image tools and feature of this software for getting more and more knowledge about it.

Recommended Articles

This is a guide to GIMP resize image. Here we discuss the different parameters of resizing image tools and features of this GIMP resize image to get more knowledge. You may also have a look at the following articles to learn more –

  1. GIMP Alternatives
  2. Best Photo Editors
  3. Design Web Page in HTML
  4. CorelDRAW Logo Design
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