The RushDTF Team · Updated 2026-05-20 · 11 min read
We open hundreds of DTF files a week. About one in five needs to be sent back. Here is exactly how to prep artwork so it prints perfectly the first time — no resends, no surprises.
Roughly one in five files that lands in our inbox needs to go back to the customer before we'll print it. It is almost never artistic talent — the designs are usually beautiful. It is almost always a technical issue that takes 90 seconds to fix once you know what to look for. This guide is everything we wish people knew before they hit upload.
Bookmark this one. If you run an apparel brand, do team merch, or sell on Etsy, prepping DTF artwork correctly is the single biggest skill you can pick up. Get it right and your transfers print sharper, your colors land where you expect, and your customers do not get surprises.
PNG (or vector SVG / PDF). 300 DPI at final print size. Transparent background. RGB color mode. No flattened white background, no JPG, no screenshots, no embedded color profile weirdness. That is 90% of getting it right.
Not all file formats are created equal. Here is what actually happens on our end when you upload each one.
| Format | Verdict | Why |
|---|---|---|
| PNG | Best for raster art | Supports transparency, lossless compression, universally supported. |
| SVG | Best for logos & text | True vector — scales infinitely with zero quality loss. Perfect for logos. |
| Excellent | Preserves vector + raster + transparency. Great for multi-element designs. | |
| TIFF | Acceptable | Supports transparency and high bit depth, but files are huge. |
| JPG / JPEG | Avoid | No transparency. Lossy compression introduces artifacts. White background bakes in. |
| WebP | Avoid | Inconsistent transparency handling across software. |
| GIF | Avoid | 256-color limit destroys gradients and skin tones. |
| Screenshot | Hard no | Almost always 72 DPI. Will print blurry every single time. |
If it's a logo, type lock-up, icon, or anything with hard edges and flat colors — use vector (SVG or PDF). If it's a photo, painted illustration, or texture-heavy art — use 300 DPI PNG.
DPI — dots per inch — is the most misunderstood number in print. The number itself is meaningless without a physical size attached. A 300 DPI image isn't automatically good. A 300 DPI image at the size you actually want to print is good.
Here's the rule: design your file at the actual size you want the print to be, at 300 DPI. If you want a 10-inch-wide chest print, your file should be 3000 pixels wide (10 inches × 300 DPI). If you want a 4-inch left chest logo, 1200 pixels wide. That's it.
If your source image is 600 pixels wide and you scale it up to 3000 pixels in Photoshop, you have not added detail — you have added blurry guessed pixels. DTF prints what you send it, faithfully, including the blur. Either find a higher-res source, recreate the artwork in vector, or print it smaller.
DTF prints exactly what is in your file. If your file has a white background, you get a rectangular white box pressed onto the shirt around your design. This happens every week. The fix is making sure your background is genuinely transparent, not just visually white.
In Photoshop, transparency looks like a gray-and-white checkerboard pattern. If your background looks solid white, it is solid white — it will print. Use the Magic Wand or Select → Color Range to remove it, then save as PNG (not JPG, which doesn't support transparency at all).
Watch out for near-white pixels around the edges of your artwork — antialiasing halos, JPG compression ghosts, scanner backgrounds. These print as faint white outlines that look terrible on dark garments. Zoom to 400% on a dark background in Photoshop (Edit → Preferences → Transparency → Grid Colors) to spot them.
This one is counterintuitive. Print is traditionally CMYK, so the instinct is to convert your files to CMYK before sending. Don't. Modern DTF printers run a proprietary color-management pipeline that expects RGB input (specifically sRGB) and converts to the printer's CMYK + white profile internally. Converting to CMYK yourself loses the most vivid blues, purples, and greens before we even see the file.
Keep your file in RGB / sRGB. If you're working in Photoshop: Image → Mode → RGB Color. In Illustrator: File → Document Color Mode → RGB.
Screens display in light (RGB), prints reflect in ink (CMYK). Some color shift is physics, not a mistake. Neon pinks, electric oranges, and bright purples lose a little saturation on every print process. If exact color matching matters (brand work, sports teams), order a test print first.
Every DTF transfer prints in two passes: a full-color CMYK layer first, then a white ink layer underneath. The white layer is what lets the design pop on dark garments. You do not need to add a white layer to your file — our RIP software generates it automatically from the alpha channel of your PNG.
Two practical implications. First, anywhere your file is transparent, no ink prints — so transparent backgrounds give you a clean print that follows the contour of your artwork exactly. Second, anywhere your file has color, white ink prints under it — so you cannot have intentional bare-garment areas inside your design unless you make those areas fully transparent in the file.
Knock out those areas to full transparency in Photoshop. If you want a black outlined logo on a heather grey shirt and you want the grey to show through inside the letters, the inside of those letters must be transparent (checkerboard), not white.
If you're sending vector files (SVG, PDF, AI), always convert text to outlines or shapes before exporting. Otherwise, if we don't have your font installed, it gets substituted and your design looks wrong. In Illustrator: select your text and Type → Create Outlines. In Affinity Designer: Layer → Convert to Curves.
For raster art, type renders cleanly at 300 DPI down to about 6 pt for sans-serif fonts and 8 pt for serif fonts. Anything smaller starts to break apart on the transfer. If you need ultra-fine type (legal lines, fine print, tiny URLs), use vector so it stays crisp at any size.
DTF reproduces photos better than any other transfer method, including DTG in our experience. A few things to know:
Drop it into our gang sheet builder. You'll see exactly what will print, scaled to your chosen size, before paying for anything.
This is the one piece of advice from every print shop owner that customers ignore until they have ordered 200 transfers and discovered the brand red is two shades off. For any new design — especially if color accuracy, fine detail, or a specific brand match matters — order one transfer first. We will send it in the same shipping window as a normal order. Once it's in your hand, you can adjust the file, then commit to the full run.
On a 22-inch gang sheet, a small 4-inch test transfer costs about $3. That's the cheapest insurance in custom apparel.
Drop your PNG, SVG, or PDF into the builder. We'll show you the print preview, size, and price in 30 seconds — and ship in 1–2 business days from Regina.
PNG with a transparent background for raster artwork, or SVG/PDF for vector logos and text. Avoid JPG (no transparency), WebP (inconsistent transparency), and screenshots (always low resolution).
300 DPI at the final print size. A 10-inch-wide print needs to be 3000 pixels wide minimum. The number itself doesn't matter if it isn't paired with the right physical size — a 300 DPI file at 1 inch will print at 30 DPI if you scale it to 10 inches.
RGB (specifically sRGB). DTF printers use a proprietary CMYK + white color pipeline that expects RGB input. Converting to CMYK yourself in Photoshop will dull your colors before they even reach the printer.
Your file has a white background instead of transparency. Open it in Photoshop — if the background is solid white instead of a gray checkerboard, it's not transparent. Re-export as PNG with transparency enabled.
No. The DTF RIP software generates the white ink layer automatically from the alpha channel (transparency) of your PNG. Anywhere your file is opaque, white prints underneath. Anywhere your file is transparent, nothing prints.
Yes, but you need Canva Pro to export with a transparent background. Set your canvas to the actual print size in inches, design at high quality, then Download → PNG with 'Transparent background' checked.
6 pt for vector sans-serif fonts, 8 pt for serif fonts. For raster artwork, 14 pixels tall at 300 DPI. Anything smaller may chip or blur when pressed. Hairline strokes thinner than 1 pt should also be avoided.
Screens display color with light (RGB) and prints reflect color with ink (CMYK). Some shift is unavoidable physics. Neon and ultra-bright colors lose the most saturation. For brand-critical work, order a test print first.
Not really — upscaling only adds blurry interpolated pixels. DTF will print the blur faithfully. Better options: find a higher-resolution source, recreate the design in vector, or print it smaller so the original resolution is enough.
We do a basic file check — size, transparency, resolution. We'll email you if something is obviously broken. But we don't redesign artwork or color-correct on your behalf. If the file is print-ready, we print exactly what you sent.