Wondering which digital art resolution and DPI to use before you export? For most print work, aim for 300 pixels per inch at the final print size, and keep your canvas big enough to reach it.
This guide is one part of our wider look at digital art, focused on the technical side of getting files ready for print.
| Item | Value |
|---|---|
| Standard print resolution | 300 dpi |
| Still acceptable, slightly less sharp | 200 to 300 dpi |
| Typical web graphics | 72 or 96 PPI |
| Pixel size for a 4 x 6 inch print | 1200 x 1800 pixels |
| Black-and-white line art | 600-1200 dpi |
| Comics with inked line art and colour | 400 dpi |
These figures come from print-service guides by PrintNinja and Smartpress. Printers set their own requirements and guides get updated, so check the source and your printer’s specs before you rely on them.
PPI, DPI and LPI: what the terms mean
Your canvas is a grid of pixels. PPI (pixels per inch) describes how tightly those pixels are packed at a given print size, while DPI (dots per inch) describes the ink dots a printer places on paper, as Smartpress explains.
In everyday use the words get mixed up. PrintNinja’s guide says that when someone asks for a “300 dpi” file, they mean 300 ppi. An Adobe Community expert makes the stricter point that it’s PPI, not DPI that you edit in Photoshop.
A third term, LPI (lines per inch), is the halftone screen used in offset printing. PrintNinja notes that commercial printing typically uses 150 lpi, and the rule of thumb is that image resolution should be 2x the screen, which lands on 300 dpi. The same guide adds that a 2400 dpi printer makes far finer dots than a 300 ppi image needs, so going above 300 ppi does not improve the output.
How much resolution does your artwork need?
The answer depends on what you are making. PrintNinja suggests these targets:
- Colour illustrations and paintings: 300 dpi, the same as photographs.
- Black-and-white line art: 600-1200 dpi, because hard edges with no anti-aliasing show visible stairstepping at lower resolutions.
- Comics with inked line art and colour: 400 dpi, or 600 dpi for pure black-and-white comics.
More is not always better. The same guide says files above 300 dpi do not improve print quality and can become too large to process, so it sets a maximum of 400 dpi for submitted files.
Falling short has a cost too. According to PrintNinja, artwork in the 200 to 300 dpi range still looks pretty good but not quite as sharp, while anything under 200 dpi is considered low resolution and shows notable pixelation or blurring.
Treat 300 as a default, not a law. An Adobe Community expert points out that you may not even need 300 ppi, depending on output method, print size and viewing distance.
Work out your canvas size in pixels before you start
The simplest rule is to multiply the printed size in inches by 300. Smartpress gives the example of a 4 x 6 inch print, which needs 1200 x 1800 pixels. By the same maths, an 8 x 10 inch print needs 2400 x 3000 pixels.
You can also work backwards from a finished file. 4OVER4’s Photoshop guide says to divide the pixel width by 300 to find the widest sharp print, so a 3000 pixel wide image tops out at 10 inches.
For bigger pieces, the relationship holds in any unit. An Adobe Community answer shows that an image of 8335 x 11049 px measures 70.57 x 93.55 cm at 300 ppi. Print it larger and the density drops below 300 ppi; print it smaller and the density rises.
- Decide the final print size in inches.
- Multiply each side by 300 to get your target pixel dimensions.
- Start the canvas at that size, or larger if you may print bigger later.
- Keep placed artwork at 100% or smaller, since Smartpress notes that enlarging an image lowers its final PPI.
Starting at the right size is far easier than repairing a file late, because pixels you did not paint cannot be recovered afterwards.
Why changing the number does not add detail
It is tempting to open a small file and switch it from 72 to 300. PrintNinja warns that this does not increase the resolution; it only makes the pixels larger, so the print looks just as blurry.
Smartpress puts it bluntly: a low-resolution image cannot be made into a high-resolution image, because there is no way to add pixels to improve its quality.
What you can do is check how large a file can safely print. 4OVER4 describes these steps in Photoshop:
- Open Image, then Image Size.
- Uncheck Resample, so the pixel count never changes.
- Enter 300 in the Resolution field, with the unit set to Pixels per Inch.
- Read the new width and height. That is the largest size the file supports at 300 ppi.
If that size is smaller than the piece you need, the same guide says the image does not have enough pixels and should be replaced rather than enlarged. Before you send a file, flatten it, zoom to 100 percent and look at the smallest details, since softness on screen will be worse in print.
Screens, large prints and client handoff
Screens are more forgiving than paper. PrintNinja says web images are typically 72 dpi, which suits websites, but they will always look pixelated when printed. Smartpress agrees, noting that web graphics are commonly made at 72 or 96 PPI and show more pixelation on paper than on a screen. Keep your large master file and export a smaller copy for the web.
Large formats follow different rules because people stand further back. Smartpress lists:
- Small format: images below 200 DPI are considered low resolution.
- Large format: images below 100 DPI are considered low resolution.
- Large format extras: line images at 200 DPI work perfectly, and photographic images on canvas are adequate at 100 DPI.
Resolution is also a handoff detail. Noting the pixel dimensions and intended print size beside each finished piece makes it easier to present your work in a digital art portfolio.
When a client expects print-ready files, write the print size, resolution and file format into your art commission contract so both sides know what “done” means.
Frequently asked questions
Is 72 dpi enough for digital art?
Show answer
For websites, yes. PrintNinja says 72 dpi is typical for the internet and suitable on screens, but it will always look pixelated when printed.
Should I think in DPI or PPI?
Show answer
PPI describes your file, and that is what art software edits. DPI describes the printer’s ink dots, though PrintNinja notes that “300 dpi” is used as shorthand for 300 ppi.
Can I turn a low-resolution file into a 300 dpi file?
Show answer
Not in a useful way. PrintNinja explains that changing the setting only makes the pixels larger, so the print stays pixelated or blurry. Rebuild the piece at a larger pixel size instead.
Does going above 300 dpi improve my print?
Show answer
No. PrintNinja says files above 300 dpi do not improve print quality, and it caps submitted files at 400 dpi.
