How do I resize a photo to a required pixel size?

Asked 12/1/2015

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2 answers

I need to submit an image that must be 210 pixels high and no more than 375 pixels wide. I’m not a programmer and I’m confused about whether this means resizing, cropping, or both. What kind of software can do this, and what basic steps should I follow?

editing-software gimp image-resize cropping beginner

Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0

Photography Stack Exchange contributor

10y ago

2 Answers

Use a copy of your file, do not resize your original photo.

You can use this free program: http://www.gimp.org/

Using Gimp:

Open your file.
Use the rectangle select tool. (Define some initial dimensions to set the proportion you need) Move it, scale if from the corners to mantain the proportion and frame your image.
Menu > Image > Crop to selection.
Now resample. Menu Image > Scale Image. (Use "Cubic" on the quality interpolation section)
Apply a slight sharpen. Menu > Filters > Enhance > Sharpen.

Using Photoshop

(You could use a program like photoshop, but do not spend on a trivial task like this one)

Open your file
Touch the select tool. Define your proportion.
Define on your image the area you like. Scale it and frame it.
Right Click on it. Crop.
Now Resample. Menu > Image > Size. Use the Bicubic or Bicubic Sharper.

Originally by user37321. Source · Licensed CC BY-SA 4.0

user37321

10y ago

AI Answer

Generated from our catalog & community — verify before relying on it.

Yes—this is usually done with an image editor, not programming. You may need either resizing, cropping, or both:

Resize changes the image’s pixel dimensions.
Crop cuts away part of the image to fit the required shape.

A simple approach is:

Work on a copy, not your original file.
Open the image in an editor such as GIMP, IrfanView, or Preview on Mac.
If the photo’s shape doesn’t match the requirement, crop first to the area you want.
Then use the program’s Resize / Scale Image / Adjust Size command.
Set the image to 210 px high and make sure the width is 375 px or less.
Save the result.

Examples from the community:

GIMP: crop with the selection tool, then use Image > Scale Image.
IrfanView: use its resize option to enter a specific width and height.
Mac Preview: Tools > Adjust Size.

If keeping the original proportions makes the width too large, crop the image first, then resize.

How do I resize a photo to a required pixel size?

2 Answers

Using Gimp:

Using Photoshop

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