Recommendations for best quality results
Banners:
Full size Scale 1:1
JPG, EPS, PDF, TIFF, PSD, AI, CDR
Banners smaller than 4x4ft resolution 120dpi
Banners bigger than 4×4 resolution 72dpi
DTF:
High Resolution 300dpi
PNG, TIFF, JPG, PDF
Better if you have native design in Photoshop, Illustrator or CorelDraw or Vectors
Vehicle Graphics: Native file AI, PSD, CDR, or PDF
If you have JPG full scale 1:1 can be 52dpi – 72dpi depending on the size