A C# Excel Add-in to embed picture pixels into the worksheet cells

In the Ribbon, under the "Add-Ins" tab, there is a new button that says "Pixelate".

When you click it, you will be asked to provide an image file. When you provide the file, the program will go through the image pixel-by-pixel and place each pixel's color into each respective cell.

If the image is too large, then it will be resized to fix the "Too many different cell formats" error.

When I first heard about the 73-year-old Japanese man using Excel to make art (link here), I first thought that he was painstakingly coloring each individual pixel a specific color. I had always thought "I could code that" by doing the reverse, which is to take a photo and pixelate it into the Excel cells.

That's what this Add-in does.

Later - when I actually read the article and looked at the images - I realized that the Japanese man was actually using a combination of things, but mostly Excel Shapes to get the art done. This is much different than I had originally thought. However, I still thought this little app was pretty cool, so I wrote it up for fun.

Be sure to create a signing key for the assembly before building / running locally.