What is resolution?

Resolution is how much detail a picture holds, counted in pixels (the tiny dots that make up the picture). More pixels mean a sharper picture, especially when it's printed large.

Your choices

• 2K (standard): the picture as the AI makes it, about 2,000 to 2,500 pixels on its long side. No extra charge. Plenty for phones, websites, social media and prints up to about 8 x 10 inches.
• 4K: the AI makes the picture at 4K, about 4,000 pixels or more on its long side. For prints up to about 11 x 14 inches. Costs 12 extra credits.
• 8K: the 4K picture enlarged with Topaz, a professional tool that adds fine detail as it enlarges rather than just stretching the pixels, to about 8,000 pixels. For prints up to about 20 x 30 inches. Always a JPEG file (a PNG that size would be over 100 megabytes). Costs 20 extra credits.
• 16K: enlarged the same way to about 16,000 pixels, for the largest prints, up to 40 x 60 inches. Always a JPEG file (a PNG that size would be several hundred megabytes). Costs 60 extra credits.

Which one should I choose?

If the picture is for a screen, standard is all you need. Pick 4K, 8K or 16K when you plan to print it: the bigger the print, the more pixels it needs. Your download is then the larger file; the standard size stays available too.

Ordering prints

Each print size needs a certain resolution. If a picture doesn't have enough for the size you want, the print options will say so and offer to increase it.

Related: What is aspect ratio? and What is format?