: How should I save my graphics with only 2 colors? I had this problem for quite long. Some websites allow us to upload only JPG, PNG and GIF files. When I upload something with only 2-3 colors

@Kevin459

These are jpeg artefacts caused by too much lossy compression. If you uploaded the images to facebook/instagram for example, these convert all images to jpeg, resize them, and add more compression. There's little you can do except perhaps reduce the image size, and convert the images to jpeg yourself, in order to keep the file size as low as you can so that the website adds less compression.

There's a help page on facebook that gives advice on how to avoid such problems here - click on the section that says "How can I make sure that my photos display in the highest possible quality?"

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