The print desk · Resolution

Is your image large enough to print?

The useful starting point is your image’s pixel dimensions and the size you want on paper. A “300 DPI” label alone cannot answer the question.

Calculate effective PPI

Pixels per inch (PPI) describes how many source pixels you place in each printed inch. For an image that matches the print’s proportions:

PPI = image width in pixels ÷ printed width in inches

A 2400 × 3000 px image at 8 × 10 inches provides 300 PPI in both directions. At 16 × 20 inches, the same pixels provide 150 PPI. Enlarging the print spreads the available detail over more space.

If the shapes do not match, your placement matters. Cropping removes source pixels; fitting the whole image leaves unused space. See how crop and fit change the result.

DPI metadata does not create detail

DPI technically describes a printer’s ink dots. Image software and print services often use the term when discussing image resolution. Changing a file’s resolution tag from 72 to 300 without resampling leaves its pixel dimensions unchanged. It changes a suggested physical size, not the captured detail.

Resampling can add pixels, but a larger pixel count does not prove the artwork contains sharper original detail. Check the source for blur, compression artifacts and unreadable text.

Choose the target for the actual product

There is no single threshold for every print. Printful’s guidance varies by product and technique. Printify also specifies product-dependent requirements. Read the selected product’s current file guidelines before setting your target.

Use the number as one check

• Confirm the intended size, orientation and crop.
• Inspect fine details and check the provider’s color, transparency and safe-area instructions.
• Order a physical sample when the result matters.

PrintCheck compares geometry with your chosen PPI target. It does not certify print quality, inspect color profiles or approve a file for a particular platform.