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Upload the file
PNG, JPG or WEBP; you can drag in several files at once.
BeamTake/Tools/DTF print preflight
What's your DTF file's real DPI?
For DTF, what matters isn't the DPI tag in your file but the real resolution at print size. Upload your design, enter how wide you'll print it, and see the real DPI and the areas that will print blurry.
Included in the free planProblems marked on the imageFiles aren't stored
- Resolution is fine300 DPI at 15.2 × 15.2 cm
- White halo riskLight semi-transparent pixels on the edge
- Lines too thinThinner than 0.3 mm
- 24 small piecesMay fall off during transfer
300ideal DPI
250warning threshold
150error threshold
cmby print size
freeplan included
With this tool
What you get
- Real DPI at print size
- 250 and 150 DPI thresholds
- Included in the free plan
- Files aren't stored
How it works
Try it freeWhat's your DTF file's real DPI: step by step
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Enter the print width
Optional; resolution and line thickness are checked at that size.
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Read the report, fix it
Problems are marked on the map; fix them in the background remover with one click.
Why is the DPI in the file misleading?
An image's DPI value is just a label: a 1000-pixel logo has the same pixels whether it says 72 DPI or 300 DPI. What matters is how many centimeters those pixels are stretched across.
Printed 8.5 cm wide, a 1000-pixel logo is 300 DPI; printed 25 cm wide it drops to about 100 DPI, with blurry edges and wobbly text.
How is it calculated?
- Real DPI = pixel width ÷ (print width in cm ÷ 2.54)
- Pixels needed for 300 DPI = print width in cm × 118
- A 28 cm chest print needs at least ~3300 pixels of width
- Preflight does this calculation for every file
What if the DPI is too low?
First ask the customer for a larger source. Otherwise, AI upscaling enlarges a logo up to 4x with crisp edges; enter the print width and the scale needed for 300 DPI is calculated for you.
FAQ
Is 300 DPI a must?
300 DPI is ideal. Around 250 is fine for most designs; below 150 prints blurry and pixelated.
Isn't setting 300 DPI in Photoshop enough?
Changing only the DPI tag without resampling doesn't change print quality; the pixel count stays the same.
Related pages
Other DTF tools
From file to roll, in one panel
Background remover
Print-ready transparent PNGs for DTF and gang sheets: no white halo, semi-transparent edges or specks.
OpenBlack knockout and outlineKnock out black for dark shirts and add a white or colored outline around your design; hard-edged DTF PNG.
OpenAI image upscalerUpscale low-resolution designs up to 4x; crisp lines, 300 DPI print size, transparency preserved.
OpenGang sheet builderAuto-nest your designs onto a DTF roll: spacing, rotation, shortest length; 300 DPI PNG and PDF.
OpenBulk names and numbersGenerate a name and number PNG for every player from a list for team jerseys; arc, outline, 300 DPI, one click to gang sheet.
OpenT-shirt mockupSee your design on a T-shirt at real print size: colors, front and back, chest or pocket logo; download a PNG.
Open
Preflight is free
What's your DTF file's real DPI?: try it today
Print preflight is included in the free plan; the other DTF tools are on DTF plans.
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