DTF Design File Tips: Best Formats for Custom Transfers

Written By Megan Lindberg

One of the biggest factors in getting high-quality custom DTF transfers is using the right design files. Even the best printer can’t fix artwork that’s low resolution or improperly formatted.

If you want vibrant colors, crisp lines, and professional results, this guide breaks down exactly what your DTF files should look like—and what to avoid.

Best File Formats for DTF Transfers

✅ PNG (Best Option)

PNG files are the gold standard for DTF printing.

Why PNG works best:

  • Supports transparent backgrounds

  • Preserves detail and color

  • Ideal for logos, text, and graphics

Most custom DTF transfers are printed from PNG files, especially when uploading designs into a DTF gang sheet builder.

⚠️ JPG (Use With Caution)

JPG files do not support transparency. This can cause unwanted background boxes or artifacts.

Use JPG only if:

  • The background is intentionally solid

  • The image is high resolution

  • There’s no background color conflict

❌ SVG, PDF, or Screenshots

These often cause issues when converted for DTF printing:

  • SVG files may rasterize incorrectly

  • PDFs can flatten transparency

  • Screenshots are usually low resolution

For best results, always convert artwork to a high-resolution PNG before uploading.

Resolution & DPI: Why It Matters

DTF transfers should be created at 300 DPI whenever possible. Lower DPI files can appear:

  • Blurry

  • Pixelated

  • Fuzzy around edges

If you zoom in on your design and see jagged edges, the file likely isn’t high enough quality for printing.

Transparent Backgrounds Are Key

Your design should have a transparent background, not white.

How to check:

  • Place your design over a dark background

  • If you see a white box, the background isn’t transparent

Transparent files ensure your design blends cleanly into the garment—especially important for dark fabrics.

Uploading Files to a DTF Gang Sheet

Once your file is ready, upload it to the Teddy Transfers custom DTF builder where you can:

  • Resize designs

  • Arrange multiple images

  • Maximize sheet space

  • Preview before ordering

👉 Build your gang sheet here:
https://www.teddytransfers.com/build-a-gang-sheet

For beginners, starting with the Teddy Transfers design library is a great way to skip file prep entirely.

Common DTF File Mistakes to Avoid

  • Uploading screenshots

  • Using low-resolution images

  • Leaving white backgrounds

  • Tiny text or thin lines

  • Stretching artwork larger than its original size

Fixing these issues before ordering saves time and prevents reprints.

Final Tip

When in doubt, test small or use pre-made artwork from our design library. It’s already optimized for DTF printing and removes the guesswork.

👉 Learn more in our main guide:
How to Create Custom DTF Transfers

Megan Lindberg
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