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What is 'resolution'? What resolution should my image/photo be for uploading?

Resolution is the degree of detail visible in a raster or vector image.

 

Raster images (like photos) are comprised of pixels — or, dots of colour.

  • High resolution means there are many dots per inch.
  • Low resolution means fewer dots per inch, and poorer quality.
  • For VistaPrint products, aim for at least 300 dpi at the desired image size unless the product indicates otherwise.

Vector images are not comprised of pixels; they're calculated and displayed with the help of mathematical equations.

  • They can be stretched to any size while maintaining high quality.
  • It's preferable to use vector images whenever possible.