Image resolution too low for printing? 5 fixes that work

What "too low" means

Resolution at print size is the pixel width divided by the print width in inches. The result is the DPI (or PPI) the print actually gets. When that number is below what your printer asks for, the file is "too low resolution."

Example: A 1,200 × 1,500 px image printed at 8 × 10 inches (20.3 × 25.4 cm) gets 1,200 ÷ 8 = 150 DPI. A print shop that wants 300 DPI needs 2,400 × 3,000 px for that size, twice as many pixels each way.

Spoonflower sums up what happens if you print anyway: "Enlarging an image causes loss of detail, resulting in a blurry or pixelated print." Too few pixels get stretched over too much paper or fabric.

Try the fixes below in order. The first ones cost nothing and lose nothing, so only move down the list when the one above won't do.

Fix 1: Print it smaller

The quickest fix is a smaller print. Divide the pixels by the DPI you need to find the largest size that stays sharp.

Image pixels	Largest print at 300 DPI	Largest print at 150 DPI
1,000 × 1,000	3.3 × 3.3 in (8.5 cm)	6.7 × 6.7 in (16.9 cm)
1,500 × 2,000	5 × 6.7 in (12.7 × 16.9 cm)	10 × 13.3 in (25.4 × 33.9 cm)
2,400 × 3,000	8 × 10 in (20.3 × 25.4 cm)	16 × 20 in (40.6 × 50.8 cm)
3,000 × 4,000	10 × 13.3 in (25.4 × 33.9 cm)	20 × 26.7 in (50.8 × 67.7 cm)
4,000 × 6,000	13.3 × 20 in (33.9 × 50.8 cm)	26.7 × 40 in (67.7 × 101.6 cm)

Test: if the smaller size still works for the product, you are done. A 5 × 7 card or a small placement print often fits a file that fails at poster size.

Fix 2: Match DPI to the product

300 DPI is a habit from photo prints held in the hand. Many products are seen from farther away or printed on material that can't show that much detail, and printers ask for less.

Product	DPI printers ask for	Source
Mugs, phone cases, posters	300	Printful
T-shirts, apparel, all-over print	150	Printful
DTF transfers	300 at the print size	InkMerge
Fabric by the yard	150	Spoonflower
Wallpaper and large format	at least 150	Fine Print NYC

Spoonflower explains why 150 is enough for fabric: the weave of the threads limits how much detail can print, and extra dots can even look fuzzy. Fine Print NYC asks for at least 150 PPI for any large-format job.

Example: The 1,200 × 1,500 px image above fails a 300 DPI poster at 8 × 10 inches. As fabric at 150 DPI it prints 8 × 10 inches as it is, with nothing to fix.

Test: ask your printer which DPI they want for this product. If the answer is 150, redo the math before you change the file. Our DPI for fabric printing guide goes deeper for textiles.

Fix 3: Get the original file

Before you repair a file, check that it is the best copy that exists. Screenshots, images saved from a website and photos sent through chat apps are often much smaller than the original.

• Ask the client or the artist for the file they exported, not a copy they forwarded.
• In chat apps, ask them to send it as a document or file so it isn't compressed.
• Check the camera roll or the cloud folder for the full-size version.
• If you made it yourself, look for the layered master (PSD, TIFF or the app's own file).

Test: compare the pixel size of what you have with what you get. Our guide on how to check an image's DPI shows where to read it.

Fix 4: AI upscale 4× or 8×

When no bigger file exists, add pixels. A plain resize in Photoshop fills new pixels with averages of the old ones, so edges go soft. AI upscaling draws in new edges and texture, so the larger file looks sharp. The AI upscaling vs Photoshop resize guide compares the two.

Example: The 1,200 × 1,500 px image upscaled 4× becomes 4,800 × 6,000 px (28.8 MP). That prints 16 × 20 inches (40.6 × 50.8 cm) at 300 DPI.

To upscale with our Image Upscaler:

1. Sign in with a free account and upload the best copy you have. JPG, PNG, WEBP, TIFF and PSD all work.
2. Choose 4× or 8×. Divide the pixels you need by the pixels you have and pick the next scale up.
3. Download the PNG. It is tagged 300 DPI, and transparent backgrounds stay transparent.
4. Compare it with the original at 100% zoom: faces, small text, fine lines and edges.

Free results go up to 36 megapixels, so free 8× works for images up to about 750 × 750 px. Pro adds finer detail and 16×, with results up to 50 megapixels, for 120 credits an upscale (180 above 36 MP). The 800% upscale guide helps you pick the scale.

Note: An upscaler can't recover detail that is unreadable in the source. If a word or a face is a blur of a few pixels, the AI has to guess what it was. Check those parts closely before you print.

Fix 5: Redraw as vector

Logos, wordmarks, small text and flat shapes with a few colors print best as vector art. Vector shapes have no pixels, so they stay sharp at any size.

• Ask the client for an Illustrator (.ai), EPS, SVG or PDF version of the logo first. Many have one.
• Trace simple shapes with Illustrator's Image Trace or Inkscape's Trace Bitmap, then tidy the nodes by hand.
• Retype text in the same or a similar font instead of enlarging it.

You can combine fixes. Upscale a painted background, then put the vector logo and fresh text on top.

Which fix to choose

Your file	Best fix
Sharp, but you need it big	Fix 1 or Fix 2
A screenshot or chat-app copy	Fix 3, then check again
A painting, photo, pattern or AI art with no bigger copy	Fix 4
A logo, text or flat shapes	Fix 5

Warning: Changing 72 to 300 in the resolution box without adding pixels only changes a label. InkMerge says it plainly: changing a file to 300 DPI "does not automatically create missing image detail." Our 300 DPI converter page explains the difference.

What to do next

Work out the DPI your file gets at the print size, and ask your printer what they need. If you still come up short and the original is gone, upload the image to the free Image Upscaler, choose 4× or 8×, and check the PNG at 100% zoom before it goes to print.