Tag Archives: resize images

Make bitmap extension methods that resize bitmaps in C#

Posted on April 27, 2020 by RodStephens

The post Resize pictures in a directory to specific widths or heights in C# lets you resize all of the pictures in a directory. This example extracts the key method that resizes files and places it in a new Bitmap … Continue reading →

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Resize pictures in a directory to specific widths or heights in C#

Posted on April 26, 2020 by RodStephens

The post Resize pictures in a directory in C# lets you resize all of the pictures in a directory but it only scales the images. This example lets you resize pictures so they have a given width, height, or both. … Continue reading →

Posted in files, graphics, image processing | Tagged , , , , , , , , , , , , , , , | 1 Comment

Resize images in C#

Posted on June 21, 2019 by RodStephens

You can use MS Paint to easily resize images. Unfortunately, it won’t preserve transparency if you save the result. I often need to resize transparent images so I finally got around to writing this example. It lets you resize images … Continue reading →

Posted in drawing, graphics, image processing | Tagged , , , , , , , , , | 4 Comments

Scale images and save them in C#

Posted on August 29, 2016 by RodStephens

Occasionally when I’m writing a book or article, I need to scale images and then save them. MS Paint does this easily, but it loses any transparency information when it saves images. This program lets you scale images and then … Continue reading →

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Resize an image to view its pixels in C#

Posted on April 25, 2016 by RodStephens

This example shows how to resize an image so it is big enough to view its pixels. Normally you want resized images to be smooth, but this technique can be useful if you want to see exactly what colors the … Continue reading →

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Make a montage editor in C#, Part 2

Posted on October 8, 2015 by RodStephens

The post Make a montage editor in C#, Part 1 explains how the montage editor loads, draws, and saves images. This post explains how the program lets you manipulate images. When you move the mouse over an image’s body, it … Continue reading →

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Make a montage editor in C#, Part 1

Posted on October 7, 2015 by RodStephens

A while ago I wanted to make a montage showing a bunch of different pictures. I got a reasonable result by using MS Paint but it was a huge amount of work. After resizing and positioning a picture in the … Continue reading →

Posted in graphics, image processing | Tagged , , , , , , , , , , , , , , | 1 Comment

Draw smooth graphics in C#

Posted on January 4, 2015 by Rod Stephens

This example shows how to draw smooth graphics such as text, resized images, lines, and shapes. When drawing, C# sometimes favors speed over quality. If you look closely at the picture shown here, you’ll see that the text, image, and … Continue reading →

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Resize pictures in a directory in C#

Posted on July 21, 2014 by Rod Stephens

This example shows how to resize pictures in a directory. This program lets you enter a directory name and a scale factor. It then loads all of the bmp, gif, jpg, jpeg, and png files in that directory, resizes them, … Continue reading →

Posted in files, graphics | Tagged , , , , , , , , , , , , , , , | 4 Comments

Resize images and save the results in C#

Posted on July 21, 2014 by Rod Stephens

This program lets you load and resize images, and save the results into files. When the form loads, the following Load event handler saves the scale factor for each of the scaling menu items in their Tag properties. // Set … Continue reading →

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