What Size to Sell Digital Prints — Aspect Ratios, DPI, and the File Cap Nobody Mentions
Deciding what size to sell digital prints at: why DPI is a number in the file rather than a property of it, which aspect ratio families cover most buyers, and how a 300 DPI large print collides with Etsy's 20MB per file limit.
TL;DR: Most advice about sizing digital prints leads with 300 DPI, which is true and nearly useless on its own, because DPI is a label inside the file rather than a measure of quality. What matters is pixel count, aspect ratio, and the fact that a marketplace file cap will stop you before your camera does. Cover three aspect ratio families instead of a long list of inch sizes, export JPEG rather than TIFF, and check your largest file against Etsy's 20MB limit before you build a listing around it.
Why is DPI the wrong thing to lead with?
Because a JPEG does not become sharper when you change its DPI tag. The tag says how many of the existing pixels to lay down per inch of paper. Change it from 72 to 300 and nothing about the image changes; you have simply told the printer to make the print smaller.
The number that decides whether a print holds up is the pixel count on each side. DPI is the conversion factor between that and inches:
pixels ÷ DPI = printed inches
So a 6000 by 4000 pixel file from a 24 megapixel camera is a 20 by 13.3 inch print at 300 DPI, and a 40 by 26.7 inch print at 150. Both are the same file. Whether the second one looks good depends on how close the buyer stands, which is why large-format work is routinely accepted at 150 to 240 DPI while a small print on a desk is not.
The practical consequence for a listing: set the DPI tag to 300 so the file opens at the expected size in a buyer's software and no print shop queries it, and then decide your actual offering in pixels.
Which sizes should a listing actually include?
Not a list of inch sizes. A list of aspect ratio families, because cropping is what ruins a buyer's print and a matching ratio prevents it.
| Family | Covers | Why include it |
|---|---|---|
| 2:3 | 4x6, 8x12, 12x18, 16x24, 24x36 | The native ratio of most full-frame and APS-C cameras, so it costs you no crop |
| 4:5 | 8x10, 16x20 | Extremely common frame sizes in US retail; needs a deliberate crop from a 2:3 original |
| ISO A | A4, A3, A2 | What buyers outside the US can actually buy frames for |
Three files, one per family, each exported large enough for the biggest size in that family, and the buyer prints anything in the family without cropping. That is a better offer than fifteen individually-sized files, and it is less work for you.
The counter-argument you will read is that more files signals more value. In practice a long file list generates support messages asking which one to use. If you want a fourth, a square 1:1 crop is the one with real demand.
Where does the file cap bite?
Here, and this is the collision the sizing guides do not mention.
Etsy documents five digital files per listing at up to 20MB each. Now price out the top of the 2:3 family: 24 by 36 inches at 300 DPI is 7,200 by 10,800 pixels, close to 78 megapixels. Exported as a maximum-quality JPEG, a detailed photograph at that size can land anywhere from roughly 10MB to well past 20MB depending on how much fine texture it contains. A clean sky compresses to nothing. A forest does not.
Which means the same export preset can produce a compliant file for one photo and an over-cap file for the next, and you will find out at upload time. Three ways out, in the order we would try them:
- Drop the quality setting, not the pixels. Going from maximum to high quality on a JPEG typically cuts size substantially with no visible difference at print distance. Do this first.
- Cap the long edge. 7,200 pixels on the long edge is a 24-inch print at 300 DPI and a 36-inch print at 200. If your buyer is printing a 24x36 for a wall, 200 DPI at that size is fine, and the file shrinks a lot.
- Split the bundle. One ZIP per aspect ratio family, which also sidesteps the five-file count if you are offering more than five things.
The full set of caps that catch photographers on Etsy, including the ones that have nothing to do with files, is in every Etsy listing limit that bites photographers.
What should be in the download besides the image?
Two things earn their place and nothing else does.
A short printing note — which file is which ratio, what to ask a print shop for, and a line about colour looking different on paper than on a backlit screen — prevents the most common disappointed message a digital seller gets.
A PDF version of each ratio, if you can spare a file slot. Buyers printing at home find a PDF easier than a JPEG, and it prints at a fixed size rather than at whatever their printer driver decides.
What does not earn its place: a licence document longer than the listing, a folder of mockups the buyer did not ask for, or a TIFF. On a 20MB per file marketplace, a TIFF spends your entire budget to deliver a quality difference nobody will see on paper.
How does this fit the rest of the listing?
File preparation is the part of listing a photo that is genuinely mechanical, and it is worth setting up as presets once rather than as decisions each time. One export preset per aspect ratio family, named consistently, is a ten-minute job that pays for itself by the fifth listing.
The part that is not mechanical is the words — what you call the photo and which keywords you attach to it — and that is where most of the actual minutes go. SpreadPix generates the title, description and keywords from the image and creates the Etsy listing as a draft through Etsy's official API for you to publish. It does not resize or export your files; your raw processor already does that better than any listing tool would. If you are setting the words up for the first time, photo keywords that sell beat camera jargon is the companion to this post, and pricing a digital photo download covers what to charge once the files are ready.
Frequently asked questions
- What DPI should digital prints be?
- 300 DPI is the standard buyers and print shops expect for photographic and fine-art prints, and 150 to 240 is commonly accepted for large pieces viewed from a distance. The important caveat is that DPI on its own means nothing: it is a tag in the file that says how large to print the pixels. What decides whether a print is sharp is the pixel count.
- What sizes should I include in a digital download listing?
- Cover aspect ratio families rather than listing individual inch sizes. Three families take care of most buyers: 2:3 for 4x6 through 24x36, 4:5 for 8x10 and 16x20, and the ISO A series for A4, A3 and A2. A buyer with a 2:3 file can print any 2:3 size without cropping, so one file serves the whole family.
- How many files can you attach to an Etsy digital listing?
- Etsy's documented limit is five digital files per listing, each up to 20MB. Third-party guides circulate higher numbers, which is a good reason to check Etsy's own help centre rather than an aggregator before you plan a bundle. Where a bundle exceeds the count, sellers commonly ship one ZIP per aspect ratio family.
- Should I include a TIFF or only JPEG?
- JPEG at high quality is what nearly every buyer wants, because every print service accepts it and it fits inside the file cap. A PDF is a kindness for buyers printing at home. TIFF is rarely worth the size it costs on a marketplace with a 20MB per file limit, and it introduces support questions from buyers whose software will not open it.