Halftone separation (raster)
A photo or a picture with soft colours into 4 or 5 inks for silk screen: each ink a film of dots - big where the ink is strong, small where it is light. Free, in your browser.
👉 Click a colour on the picture to print NO ink there (its background, say) - in every film. It is listed under "No ink here"; × prints it again.
The inks
The shirt
Its colour: chosen above the picture ("Shirt colour").
No ink here (the background)
Click the picture on a colour that should not be printed - its background. Click more colours for more; × prints it again.
The dots
The films
Questions
Spot colours or CMYK?
Spot colours use the picture's own colours as the inks - brighter, on any shirt colour, 4 to 6 inks for most pictures. CMYK is the printing-press way: 4 inks for every picture, best on white shirts.
Which screens (mesh) do I need?
Choose the mesh of your screens and the lines per inch are set for it: the mesh needs about 4.5 times more threads per inch than the dots have lines. For halftones T90 to T120 is best (45 to 65 lines); T77 works (about 45); T61 and coarser lose the smallest dots - fine for the white underbase and solid colours. T is threads per cm: T90 is about 230 threads per inch.
Is my picture uploaded?
No. Everything happens in your browser.
Run a print shop?
This free tool comes from PrintOS, the program we run our own print shop with: colour separation for silk screen - and your orders, clients, mockups and bills, on your own computer.
Our own Windows program for DTF print shops: gang sheets that never slice a design, colour separation, mockups, orders, clients and bills.
Try PrintOS →