The prepress studio — in your browser · any device

Separate your art online — plus Print Doctor, quoting & ink match

This isn't just a separator — it's much of the desktop studio, right in your browser. Upload a design and get press-ready separations: choose simulated process (halftoned) or spot color (solid plates), add a choked white underbase, auto-trap, and registration marks so your screens line up on press. Then run the same pro tools: an AI Print Doctor file-readiness check, an Instant Quote for the job, and Ink Match to the inks you already stock. Your first separation is free — full plate downloads, no watermark. After that, buy credits. No install.

Spot & simulated process Halftoned film positives Registration marks Print Doctor Instant Quote Ink Match

Free preview mode — no plate downloads

Buy credits

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Drop artwork or click PNG, JPG, WEBP, SVG, PSD, PDF, AI · up to 12 MB Drop several files to separate a batch

Garment

Black

White underbase

Underbase ink

Palette

Colors

Inks

Left-click a swatch to change · right-click to remove · + to add

Output style

?Simulated process halftones each ink (photos, gradients, many colors). Spot color prints every plate solid — crisp edges for logos & flat vector art.

Film output

?LPI sets halftone dot fineness. Choke pulls the underbase inward; auto-trap overlaps inks so a registration miss doesn't leave gaps; highlight white recovers true whites on dark garments. Min/max dot hold highlight & shadow dots like a RIP.

Mesh

LPI (line freq)

Angles

Dot shape

Underbase choke

Auto-trap

Highlight white (prints on top · dark only) Registration marks on plates Job info + step wedge on films

Specialty plates

Puff, high-density, foil adhesive, glitter, metallic, clear gel or glow: one more solid screen over part of the design, cut from one ink's area or the whole design. Simulated process and spot.

+ Add a specialty plate

Press calibration

Tell the separation how your press prints and the films are made for it, not for a textbook press. Saved in this browser.

My process ink colours (CMYK)

C M Y K

My measured dot gain

The 30% wedge step printed as (%) The 50% wedge step printed as (%) The 70% wedge step printed as (%)

Advanced tone & dots

Export DPI

Print width in

Dot gain comp

Min dot (highlight)

Max dot (shadow)

Tone & mixing

Saturation γ

Winner boost

Suppress below

Ink budget

GCR (gray→black)

UCR (base under black)

These shape continuous tone, so spot-color mode ignores them. GCR also needs a near-neutral black ink in the palette to carry the gray (UCR, which thins the underbase, works in either mode).

White underbase

Min coverage

Highlight white (top pass)

Brightness ≥

Max saturation

Choke (px)

Halftone (smooth highlights) vs solid

These only apply with “Highlight white” on, above (dark garments only).

Keep dark detail

On a dark garment, print black ink for dark hair, shadows and line art. Uncheck to let the shirt itself be the black (bare garment).

Upload a design and tap Separate to see the result here.

Plates appear here after you separate.

Levels, density, ink colour, merging and print order for each plate show here after you separate.

Press-readiness shows here after you separate.

A quote shows here after you separate.

Ink matches show here after you separate.

Buy credits — 1 credit = 1 separation

Sample

$29

10 separations · never expire Buy

Shop

$99

50 separations · $1.98 ea Buy

After buying, your API key is emailed to you — paste it above to download press-ready plates. Monthly plans & full docs on the API page.

Need production tools? The desktop app does more.

Same separation engine as this page, plus: batch separation, your own ink inventory & brand ink catalogs, auto-trap & highlight white, registration marks & print-ready film/PDF, halftone angles, mesh & dot shape, Profit Mode quoting, and RIP-ready EPS to a hot folder. Windows, plus a Mac beta for Apple silicon.

Buy the desktop app — $179 one-time Download the free trial

30-day money-back guarantee · no subscription

📧 Free print-prep tips & product updates

Occasional emails, no spam — totally optional, the tool's free either way.