DPI Inspector
Check your artwork before it hits the printer. Instantly check pixel dimensions, effective DPI, required pixels, and maximum print size for DTF and DTG artwork — directly in your browser.
- Runs in your browser
- No upload required
- Uses actual pixel dimensions
- 300 DPI production guidance
- Instant preflight result
What is DPI for DTF printing?
Pixels matter more than the DPI label.
A file's embedded DPI metadata is just a number a design tool wrote down alongside the artwork — it doesn't describe how much actual detail the file contains. What matters for print quality is effective DPI: actual pixel dimensions divided by the physical size you intend to print at. DPI Inspector calculates effective DPI directly from your artwork's decoded pixels and your chosen print size — never from embedded metadata — and gives you a clear GO, CAUTION, or NO-GO production verdict.
How it works
Upload, set your size, get a verdict.
Opening the app takes you to a native DTF Toolbox page — everything below runs in your browser, no account or upload to a server required.
- Step 01
Upload
Drop in your PNG, JPG, WebP, GIF, or BMP artwork.
- Step 02
Inspect
Actual pixel dimensions, transparency, and metadata are read automatically.
- Step 03
Set print size
Enter width and height in cm, mm, or inches, or pick a common placement preset.
- Step 04
Get your verdict
See effective DPI and a clear GO / CAUTION / NO-GO production check.
What does 300 DPI mean for DTF?
A target, not a rule.
300 DPI at final print size is recommended guidance for detailed DTF artwork — it is not mandatory for every DTF printer, and it does not guarantee perfect print quality on its own. Resolution is one preflight factor. Artwork detail, transparency, RIP settings, printer setup, ink, film, powder, curing, substrate, and production workflow also affect final output. Lower effective DPI can be acceptable for some bold or photographic artwork, but visible softness becomes more likely as resolution decreases.
Changing a file's embedded DPI metadata does not create pixel detail. If your artwork falls short of the pixels required for your print size, the fix is a higher-resolution source file or a smaller print size — not a metadata edit.
FAQ
DPI Inspector questions, answered.
What DPI should I use for DTF?
300 DPI at final print size is the common target for detailed DTF artwork. It's recommended guidance, not a requirement every DTF printer enforces — bold or photographic artwork can often tolerate less.
How is effective DPI calculated?
Effective DPI = actual decoded pixel dimensions ÷ the physical print size you intend to produce at, in inches. It has nothing to do with the DPI number saved in the file's metadata.
Does the DPI number in Photoshop matter?
Not for print quality. That number is metadata describing an assumed print size — it doesn't add or remove pixels. Changing it doesn't change what the file can actually print.
Can a 72 DPI image still be good for DTF?
Yes, if it has enough actual pixels for the size you're printing. A 72 DPI label is just leftover metadata — what matters is pixel width and height at your chosen print size.
What is the largest size I can print?
DPI Inspector calculates your artwork's maximum recommended size at the 300 DPI target, and a looser reference size at 150 DPI, directly from its pixel dimensions.
What happens if artwork is below 300 DPI?
It doesn't automatically fail — the tool gives CAUTION or NO-GO guidance depending on how far below target the effective DPI is, and what kind of artwork it is. Bold shapes tolerate lower DPI better than fine text.
Is 150 DPI acceptable for DTF?
It can be, for some bold or photographic artwork, but visible softness becomes more likely as effective DPI drops. It's not a guarantee either way — treat it as one preflight factor.
Does DPI Inspector upload my artwork?
No. Every check — pixel dimensions, metadata, DPI calculation — runs locally in your browser. Nothing is uploaded to a server during inspection.
Which file formats are supported?
PNG, JPG/JPEG, WebP, GIF, and BMP. PNG with transparency is the preferred format for DTF artwork.
Can I send artwork to Gang Sheet Builder?
Yes — once you have a GO or CAUTION result, "Continue to Gang Sheet Builder" takes you there with your preflight numbers noted locally.
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