Guides · Etsy sellers
How big can you print AI-generated art?
Divide the image's pixels by 300 for a sharp print, or by 150 for the most it can be stretched. A 1024 × 1024 image prints sharply at about 3.4 in square and acceptably up to about 6.8 in. A 24x36 poster needs 7,200 × 10,800 pixels, so smaller images have to be upscaled and then checked up close.
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How do you work out the print size from pixels?
Divide each side in pixels by the DPI. At 300 pixels per inch a print looks sharp up close; at 150 it is stretched 2× and looks softer, about the lowest that still works on a wall seen from a step back. For a square image:
| Image | Sharp at 300 DPI | Floor at 150 DPI | Largest Print-ready size | Largest Enlarged size |
|---|---|---|---|---|
| 1,024 × 1,024 px | 3.4 × 3.4 in | 6.8 × 6.8 in | None (smallest is 4 × 4 in) | 6 × 6 in |
| 1,536 × 1,536 px | 5.1 × 5.1 in | 10.2 × 10.2 in | 5 × 5 in | 10 × 10 in |
| 2,048 × 2,048 px | 6.8 × 6.8 in | 13.7 × 13.7 in | 6 × 6 in | 12 × 12 in |
| 4,096 × 4,096 px | 13.7 × 13.7 in | 27.3 × 27.3 in | 12 × 12 in | 20 × 20 in |
How much does each poster size need to be enlarged?
A 2:3 image prints every 2:3 size, from 4 × 6 to 24 × 36 in, if it has the pixels. Here is how far each size has to be stretched from three 2:3 images, in the words FrameReady's badges use: Print-ready (at least 294 effective DPI), Enlarged (up to 2×), Too small (more than 2×).
| Print size | Needs | From 1,024 × 1,536 | From 2,048 × 3,072 | From 4,096 × 6,144 |
|---|---|---|---|---|
| 4 × 6 in | 1,200 × 1,800 | Enlarged ×1.2 | Print-ready (no enlarging) | Print-ready (no enlarging) |
| 8 × 12 in | 2,400 × 3,600 | Too small (×2.3) | Enlarged ×1.2 | Print-ready (no enlarging) |
| 12 × 18 in | 3,600 × 5,400 | Too small (×3.5) | Enlarged ×1.8 | Print-ready (no enlarging) |
| 16 × 24 in | 4,800 × 7,200 | Too small (×4.7) | Too small (×2.3) | Enlarged ×1.2 |
| 20 × 30 in | 6,000 × 9,000 | Too small (×5.9) | Too small (×2.9) | Enlarged ×1.5 |
| 24 × 36 in | 7,200 × 10,800 | Too small (×7.0) | Too small (×3.5) | Enlarged ×1.8 |
Should you upscale AI art for print?
Often you have to, but be clear about what it does. Plain resampling, such as the Lanczos method FrameReady uses, stretches the pixels smoothly: edges stay clean, but the print looks softer up close the further it is stretched. AI upscalers redraw the image at the new size and invent fine detail. That can look convincing, and it can also produce texture that wasn't there, warped lettering or odd shapes in hands and faces.
- Upscale once, from the original, to at least the pixels of the largest size you will sell. Stacking upscales compounds their artefacts.
- Let the smaller sizes be made by reducing that file: downsizing loses nothing a print can show.
- Check the result at 100% zoom, especially faces, hands, lettering and repeating patterns.
- List only the sizes you would be happy to hang. If a size only works from across the room, leave it out or say so.
What if the image is square?
Frames aren't square, so a square image has to be cropped (or given a border) for every standard ratio. Filling each one crops:
- 2:3: 33% off the sides
- 3:4: 25% off the sides
- 4:5: 20% off the sides
- 11:14: 21% off the sides
- A-series: 29% off the sides
If you can choose the shape before generating, a print ratio such as 2:3 (4 × 6 to 24 × 36 in) or 4:5 avoids the crop. Otherwise decide per ratio: crop and choose what stays, or keep the whole image with “Fit + pad” on a plain or blurred border.
Step by step
- Check the image's pixel size: on Windows, right-click the file → Properties → Details; on a Mac, open it in Preview → Tools → Show Inspector.
- Find the largest size you want to sell in the tables above, and the pixels it needs.
- If the image is smaller, upscale it once to at least those pixels, and inspect it at 100%.
- Drop it into FrameReady: every ratio gets a crop preview and a badge, and each exports its largest sharp size unless you choose a bigger one.
- Pack the files for Etsy (how to fit the 20 MB limit) and list only sizes that pass your 100% check.
Frequently asked questions
What resolution do I need to print AI art at 24x36?
7,200 × 10,800 pixels for 300 DPI. At 150 DPI, the lowest that still looks acceptable from a step back, 3,600 × 5,400.
Can I sell a 1024 × 1024 AI image as a printable?
Only as small prints unless you upscale it: it is sharp up to about 3.4 in square and acceptable up to about 6.8 in. An 8x8 needs 2,400 × 2,400 px, so upscale first and check the result up close.
Does upscaling make AI art print-ready?
It gives the file enough pixels, not real detail. Plain resampling looks softer up close; AI upscalers invent detail that can look wrong. Upscale once, from the original, to the largest size you sell, then check faces, hands, lettering and fine patterns at 100% zoom.
Is 150 DPI good enough for a poster?
It is the floor FrameReady uses: fine on a wall seen from a step or two back, visibly softer up close. Below 150 DPI (more than 2× enlargement) FrameReady marks a size Too small.
Which shape should I generate AI art in for prints?
If you can choose, a print ratio: 2:3 covers 4x6 to 24x36, and 4:5 covers 8x10 and 16x20. A square image loses 20% to fill a 4:5 frame and 33% to fill 2:3.
Sources and how the numbers were worked out
Pixel, crop and size figures on this page are calculated from the same size data the FrameReady tools use (inches or millimetres × DPI), not copied from elsewhere.