What DPI should I use for printing?

300 DPI for items held close such as stickers and labels, 150 DPI for apparel and posters, and 100 DPI for large-format banners read from a distance. The requirement falls as viewing distance rises, because detail you cannot see does not need to be printed.

Can I increase the resolution of an image?

Not meaningfully. Enlarging adds pixels by interpolation but no real detail, so the result still looks soft and sometimes gains visible artefacts. You need a higher-resolution original, or a vector file.

Is 72 DPI enough for printing?

Only for very large signage viewed from several feet away. For anything held or read up close, 72 DPI looks visibly soft. The old rule that 72 DPI is 'screen resolution' is not a printing standard.

What size should my file be for a 12-inch shirt print?

At 300 DPI, 3600 pixels wide. At 150 DPI, 1800 pixels. Both print acceptably; 300 gives more margin if you later want it larger.

Why does my print look less vivid than my screen?

Screens emit light in RGB; printers lay ink in CMYK, which covers a smaller range of colours. Bright saturated colours have no exact ink equivalent and print duller. This is a physical limit, not a settings problem.

Do I need a vector file?

Not always, but it is ideal for logos and anything made of flat shapes and text, because vectors scale to any size without losing sharpness. For photographs, a high-resolution raster file is the right choice.

What Resolution Does Artwork Need for Printing?

The short answer: multiply the printed size in inches by the DPI you need, and that is how many pixels the file must be. A 4-inch chest print at 300 DPI needs 1200 pixels across. If your file is smaller than that, it will look soft — and no amount of resizing in an editor will fix it.

The formula, and how to use it

Pixels needed = printed inches x DPI.

Work it out for the longest side and you have your answer. A 12-inch-wide shirt print at 300 DPI needs 3600 pixels across. A 10-inch sticker at 300 DPI needs 3000. A 48-inch banner at 100 DPI needs 4800.

Run it backwards to check a file you already have: divide the pixel width by the inches you want to print. A 2000-pixel image printed 10 inches wide is 200 DPI. Printed 20 inches wide, the same file is 100 DPI. Nothing about the file changed — only how far you stretched it.

Why DPI requirements fall as size rises

This is the part that surprises people. A bigger print does not need a bigger DPI — it needs a smaller one.

DPI requirements track viewing distance, not physical size. A sticker is held at arm's length, where the eye resolves fine detail, so it needs 300 DPI. A banner is read from across a car park, where that detail is invisible, so 100 DPI looks identical to 300.

The arithmetic makes this unavoidable. An 8-foot banner at 300 DPI would be 28,800 pixels wide — a file most software cannot open, printing detail nobody standing 30 feet away can see. Large-format printers are built around this: 100 to 150 DPI at final size is the industry norm, not a compromise.

Resolution by product

Product	Typical viewing distance	DPI needed	Example: file size for a common print
Stickers, labels	Held in hand	300 DPI	3in x 3in = 900 x 900 px
T-shirts, hoodies	Arm's length	150-300 DPI	12in x 16in = 3600 x 4800 px at 300
Posters	2-6 feet	150 DPI	18in x 24in = 2700 x 3600 px
Gang sheet transfers	Arm's length	300 DPI	22in wide = 6600 px across
Banners	10-50 feet	100 DPI	4ft x 8ft = 4800 x 9600 px
Large signage	50+ feet	72 DPI	10ft wide = 8640 px across

Worked example: a logo on a t-shirt

Say you have a logo 800 pixels wide and want it printed 10 inches across the chest.

800 / 10 = 80 DPI. That is well under the 150 minimum for apparel, so it will print visibly soft — fuzzy edges on the lettering, especially noticeable on a logo where people know what the shape should look like.

Your options, in order of preference: find the original vector file (an SVG or the file your designer worked in), which prints sharp at any size; get a higher-resolution export, at least 1500 pixels; or print it smaller. At 4 inches wide, that same 800-pixel file is 200 DPI and prints perfectly well. Shrinking the print is often the quickest fix and nobody but you will know.

Why enlarging in an editor does not work

Photoshop and similar tools will happily resample a 800-pixel image up to 3000 pixels. The file gets bigger; the detail does not.

Interpolation invents the new pixels by averaging the ones around them. That produces a larger, blurrier version of the same image — sometimes with visible softness or halo artefacts around edges. The information was never captured, and no algorithm recovers what was not there.

AI upscalers do better than classical interpolation on photographs, because they hallucinate plausible detail. On logos and text they often make things worse, inventing edges that were not in the original. For print artwork, finding a better source file beats upscaling almost every time.

Vector files are the exception

SVG, and the AI or EPS files designers work in, store shapes as mathematics rather than pixels — a circle is described as a circle, not as a grid of dots.

That means there is no resolution to run out of. The same SVG prints identically on a business card and a billboard. This is exactly why logos should be kept as vectors and why a print shop asking for 'the vector file' is not being difficult.

The catch: saving a photograph as SVG does not make it scalable. It embeds the same pixels inside a vector wrapper. A file is only genuinely vector if it was drawn that way.

Colour, and why your print looks darker than your screen

Resolution is not the only thing that differs between screen and paper. Screens emit light and work in RGB; printers lay down ink and work in CMYK, a smaller range of colours.

Bright saturated colours — electric blues, neon greens, vivid oranges — exist on screen but have no CMYK equivalent, so they come out duller. There is no setting that fixes this; it is a physical limit of ink.

Practically: expect prints to look slightly less vivid than your monitor, and avoid designs that depend on a colour being exactly right. If a brand colour matters, ask the shop whether they can match a Pantone reference rather than trusting a screen-to-print match.

How the builder checks this for you

Rather than working this out by hand, the builder measures your uploaded file against the print size you have chosen and warns you when the effective DPI falls short — before you order, not after it is printed.

Resize the artwork on the product and the warning updates live, which makes the trade-off concrete: you can see the point at which a file stops being big enough and decide whether to print smaller or find a better source.

Check your artwork

Upload a file and the builder tells you if it is sharp enough for the size you want.

Try it

Frequently asked questions

What DPI should I use for printing?: 300 DPI for items held close such as stickers and labels, 150 DPI for apparel and posters, and 100 DPI for large-format banners read from a distance. The requirement falls as viewing distance rises, because detail you cannot see does not need to be printed.
Can I increase the resolution of an image?: Not meaningfully. Enlarging adds pixels by interpolation but no real detail, so the result still looks soft and sometimes gains visible artefacts. You need a higher-resolution original, or a vector file.
Is 72 DPI enough for printing?: Only for very large signage viewed from several feet away. For anything held or read up close, 72 DPI looks visibly soft. The old rule that 72 DPI is 'screen resolution' is not a printing standard.
What size should my file be for a 12-inch shirt print?: At 300 DPI, 3600 pixels wide. At 150 DPI, 1800 pixels. Both print acceptably; 300 gives more margin if you later want it larger.
Why does my print look less vivid than my screen?: Screens emit light in RGB; printers lay ink in CMYK, which covers a smaller range of colours. Bright saturated colours have no exact ink equivalent and print duller. This is a physical limit, not a settings problem.
Do I need a vector file?: Not always, but it is ideal for logos and anything made of flat shapes and text, because vectors scale to any size without losing sharpness. For photographs, a high-resolution raster file is the right choice.