DTF File Requirements: How to Prep Your Artwork for Perfect Prints
You've got the heat press. You've got the blanks. You've got the design. Now you just need a transfer that actually looks right — which means your file needs to be set up correctly before it ever hits a printer.
This guide covers everything you need to know about DTF file requirements: accepted formats, resolution, color mode, canvas setup, and how to export from the most common design tools. Follow these steps and your prints will come out clean, sharp, and exactly what you envisioned.
If you're ready to jump straight to ordering, head over to Order DTF Transfers. Otherwise, let's walk through the details.
Accepted File Formats for DTF Printing
DTF printers can work with several file types, but not all formats are created equal. Here's a breakdown of what we accept and when to use each one.
PNG — The Gold Standard
PNG is the preferred format for DTF transfers. It supports transparent backgrounds (more on that in a moment), handles color well, and is universally supported across design tools. If you're working in any software and aren't sure what to export, PNG at 300 DPI with a transparent background is the safest, cleanest choice.
PDF is a great option for files coming out of Adobe Illustrator or Photoshop. It preserves vector data, embeds fonts, and keeps your colors accurate. Use "PDF High Quality Print" as the export preset, and make sure you uncheck "Preserve Editing Capabilities" — that option adds overhead that can interfere with print workflows.
AI (Adobe Illustrator)
Native Illustrator files are accepted. If you go this route, make sure all fonts are outlined and all linked images are embedded. A file with missing links or unoutlined fonts will cause problems on our end — and we'll have to reach out, which slows down your order.
PSD (Adobe Photoshop)
Photoshop files are fine as long as the document is set to 300 DPI, in the correct color mode, and layers are organized cleanly. Flatten the image if there are any effects that might render differently on export.
SVG
SVG is a vector format that works well for logos, icons, and text-heavy designs. Make sure all text is converted to outlines before submitting.
JPG
JPG is accepted but it's the last resort. JPEGs don't support transparency, which means you'll get a white background baked into the transfer. That's fine for designs that are meant to be printed on white fabric, but for anything with complex edges or a non-rectangular shape, you'll want PNG or a vector format instead. Also note that JPG compression can introduce artifacts — especially in areas of solid color or fine lines — so always use the highest quality JPEG setting if you go this route.
Resolution: Why 300 DPI Is Non-Negotiable
DPI stands for dots per inch — it's a measure of how much detail is packed into your image. For DTF printing, 300 DPI at the final print size is the minimum requirement for sharp output.
Here's the issue decorators run into most often: they have a logo that looks great on a screen (because screens display at 72–96 DPI) and assume it'll print fine. It won't. A 72 DPI image scaled up to print size will look blurry or pixelated on fabric.
The rule: Your file's resolution should be 300 DPI at the actual size you want it printed. A 4"x4" design should be at least 1,200 x 1,200 pixels (4 inches × 300 DPI). A 12"x12" design should be at least 3,600 x 3,600 pixels.
If you're starting from a vector file (AI or SVG), this isn't a concern — vectors scale infinitely without losing quality. But the moment you rasterize or export to PNG/PDF, make sure you're exporting at 300 DPI.
We do not upscale or correct image quality. If a file comes in low-res, it prints low-res. That's on the file, not the press.
Color Mode: CMYK and the FOGRA39 Profile
This is the one that trips up a lot of people, especially those coming from digital design backgrounds.
You should convert your file to CMYK using the FOGRA39 color profile before submitting.
Most design software defaults to RGB (Red, Green, Blue), which is great for screens. But printers work in CMYK (Cyan, Magenta, Yellow, Black). When an RGB file gets converted at the printer level, colors can shift — sometimes subtly, sometimes dramatically. Saturated oranges, electric blues, and neon greens are especially prone to looking dull or muddy after an unmanaged RGB-to-CMYK conversion.
By converting to CMYK with the FOGRA39 profile on your end, you're controlling exactly how your colors translate to ink. What you see in your design software is much closer to what comes off the press.
How to convert in Illustrator: Go to File → Document Color Mode → CMYK. Then in your Color Settings, set the working CMYK profile to FOGRA39.
How to convert in Photoshop: Go to Edit → Convert to Profile → and select FOGRA39 under CMYK. Soft-proof before finalizing.
If you're using Canva or Kittl (both RGB-only tools), just get as close as possible with your color choices, and be aware that what you see on screen may shift slightly in print. Neons, pastels, and very saturated hues are most likely to change.
Transparent Backgrounds: Get Them Right
For DTF transfers, transparent backgrounds are critical. The transfer film only deposits ink where your design has color — so if there's a white canvas behind your design, you'll end up with a white rectangle on your garment.
Your file needs a true transparent background — not white, not a white layer you can see through, but actual transparency (the gray checkerboard you see in Photoshop and Illustrator).
PNG and PDF both support transparency. JPG does not. If you're submitting a JPG, make sure the background color matches the fabric you're pressing onto — otherwise the background becomes part of the design.
For Photoshop users: delete the background layer entirely and export as PNG-24.
For Illustrator users: make sure there's no rectangle or fill behind your artwork. Export as PNG with "Transparent" background checked, or as PDF.
For Canva and Kittl: use the "Background Remover" or don't add a background color at all. When downloading, choose PNG with transparent background.
Minimum Line and Font Thickness: The 6px Rule
DTF printing is remarkably detailed — it can hold fine lines and small type better than most other transfer methods. But there's still a floor.
Lines, strokes, and font weights thinner than 6 pixels may not print cleanly. They can break up, fade, or disappear entirely — especially on textured fabric where the weave absorbs ink unevenly.
This applies to: - Thin serif fonts (especially at small sizes) - Hairline borders or outlines - Fine detail work like crosshatching or intricate linework - Thin script or cursive letterforms
If your design has fine elements, zoom in to 100% in your design software and evaluate them carefully. A stroke that looks fine at 50% zoom may be far too thin at print size.
For fonts specifically: anything below 8–10pt at 300 DPI is risky. Simplify or embolden small text before submitting.
Canvas Trimming: No Extra White Space
Before you submit, trim the canvas so there's minimal empty space around your artwork. You shouldn't have two inches of transparent buffer on all sides — that's wasted film and it makes sizing harder for you.
Crop your canvas to the edges of your design, or leave only a small bleed (1–2mm at most). Most design apps have a "Trim" or "Fit Canvas to Content" function that does this in one click.
In Photoshop: Image → Trim → Transparent Pixels. In Illustrator: Object → Artboards → Fit to Artwork Bounds.
Artwork Sizing: What We Can Print
We print transfers from 1" x 1" up to 22.4" x 100". That covers everything from small chest logos to full-coverage oversized prints and gang sheets.
When you set up your file, size it at the exact dimensions you want it printed. Don't submit a 10"x10" file and expect us to scale it up to 14"x14" — what you send is what gets printed.
If you're building a gang sheet, arrange your designs at the sizes you want, trim to fit within the 22.4" width, and submit as one file. This is the most cost-effective way to order multiple designs.
Common Mistakes (and How to Avoid Them)
Low-Resolution Images
Pulling a logo off a website or using a screenshot is almost always a mistake. Web images are 72–96 DPI. They will print blurry. Always source the original vector or high-res file from whoever created the design.
RGB Color Mode
Submitting in RGB isn't always a disaster, but it can cause noticeable color shifts — particularly with bright or saturated colors. Convert to CMYK/FOGRA39 before submitting to stay in control of your colors.
Glow Effects, Drop Shadows, and Soft Edges
Effects that rely on semi-transparent pixels — glows, shadows, feathered edges, soft blurs — don't translate well to DTF. The semi-transparent pixels either drop out or print muddy. If you want a shadow, make it a hard-edged, fully opaque shadow. If you want a glow, consider if it's actually adding to the design or just masking a lack of contrast.
Gradients (Especially Fading to Transparent)
Gradients that fade to fully transparent are particularly problematic. The fade creates a ragged edge in the transfer that can look uneven or misregistered on the garment. If you're using a gradient, make sure it fades to a solid background color that matches your fabric — or redesign it to have a clean edge.
Fonts Not Outlined
If your file uses live text (editable type), and we don't have that font installed, it'll either substitute or throw an error. Always convert text to outlines/paths before submitting. In Illustrator: Select All → Type → Create Outlines. In Photoshop: right-click the text layer → Rasterize Type.
Wrong Canvas Size
A file sized at 100" x 100" for a design that's actually 4" x 4" is going to cause confusion. Trim your canvas to the actual design size so what you submit reflects what you want printed.
Spelling and Image Errors
We print what you send us. We do not correct spelling, grammar, or image quality issues. Proofread your design before submitting. Check every word. Look at it on a white background and a dark background. Once it's printed, it's printed.
How to Export From Common Design Tools
Adobe Illustrator
- Convert fonts to outlines: Select All → Type → Create Outlines
- Set color mode to CMYK: File → Document Color Mode → CMYK
- Fit artboard to artwork: Object → Artboards → Fit to Artwork Bounds
- Export: File → Save a Copy → Format: Adobe PDF
- Use the "High Quality Print" preset
- In the "General" tab, uncheck "Preserve Editing Capabilities"
- Confirm FOGRA39 is selected in the Output tab under "Destination"
Alternatively, export as PNG: File → Export → Export As → PNG, Resolution: 300 PPI, check "Use Artboards," background: Transparent.
Adobe Photoshop
- Set document to 300 DPI: Image → Image Size → Resolution: 300
- Convert color profile: Edit → Convert to Profile → FOGRA39 (CMYK)
- Flatten effects, rasterize text layers: Right-click → Rasterize Type
- Trim canvas: Image → Trim → Transparent Pixels
- Export as PNG: File → Export → Export As → PNG, check "Transparency"
- Or save as PDF: File → Save As → Photoshop PDF, use "High Quality Print" preset, uncheck "Preserve Photoshop Editing Capabilities"
Canva
- Build your design without a background (or remove it using the Background Remover tool)
- Keep colors as close to CMYK-friendly values as possible — avoid neons and very saturated hues
- Download: Share → Download → File Type: PNG
- Check "Transparent background"
- Note: Canva exports at 96 DPI by default, but the actual pixel dimensions are usually sufficient for smaller prints. For large prints, use "PDF Print" export — Canva will render at higher resolution.
Kittl
- Design your artwork and remove any solid background
- Go to Download → Export
- Select PNG and enable Transparent Background
- For higher-res output, select PDF (Print) if available in your plan
- As with Canva, be aware that Kittl is RGB-only — color accuracy for saturated hues may vary slightly
Quick-Reference Checklist: Before You Submit
Run through this before uploading your file:
- [ ] File format is PNG, PDF, AI, PSD, SVG, or JPG
- [ ] Resolution is 300 DPI at the final print size
- [ ] Color mode is CMYK with FOGRA39 color profile
- [ ] Background is transparent (not white)
- [ ] All fonts are outlined or rasterized
- [ ] No live text, unembedded fonts, or missing links
- [ ] No glow effects, soft drop shadows, or edges that fade to transparent
- [ ] Gradients are solid-to-solid (not solid-to-transparent)
- [ ] No lines or strokes thinner than 6px
- [ ] Canvas is trimmed to the artwork — no large empty borders
- [ ] Artwork is sized to final print dimensions (between 1"x1" and 22.4"x100")
- [ ] Spelling and design have been proofread
- [ ] PDF exports have "Preserve Editing Capabilities" unchecked
If every box is checked, you're good to go.
Ready to Print? Let's Go.
Getting your file right before submitting is the single most important step in the whole DTF process. It means faster turnaround, better color accuracy, and a transfer that looks exactly like your design — every time.
If you've got questions about a specific file or design, give us a call at (626) 988-8820 — we're happy to take a quick look before you order.
Order DTF Transfers — upload your print-ready file and we'll get it into production fast.
Not sure DTF is right for your project? Claim a Free Sample and see the quality for yourself before committing to a full run.
Or browse all our options at Custom DTF Transfers — single designs, gang sheets, and bulk transfers for decorators of every size.