CMYK Halftone Separator
Separate an image into cyan, magenta, yellow and black and re-screen each channel with a real rotated halftone dot pattern — the same principle a printing press uses. Everything runs in your browser.
Composite proof
Individual plates
C · 15°
M · 75°
Y · 0°
K · 45°
Drop an image here, or use the sample. The composite multiplies the four screened inks the way an offset press overlays them.
Screen settings
13 lines per 100px — smaller cells mean a finer screen.
Ink spread on paper: grows every dot, the way real presses darken midtones.
Inks: C 0/174/239, M 236/0/140, Y 255/242/0, K 35/31/32 (process inks).
About this tool
The image is converted to CMYK with under-colour removal, then each channel is screened on a rotated lattice at the classic angles (C 15°, M 75°, Y 0°, K 45°). Dot size follows the ink coverage of that cell, and the dot gain control models how ink spreads on paper. Download the composite proof, the four plates as separate PNGs, or the whole screen as a single SVG of real vector dots.
Separation, screening and export all happen in your browser — no image ever leaves your device. Work is capped at 1600px on the long edge and the on-screen preview is rendered at up to 1000px, so large photos stay responsive; full-resolution output is re-rendered only when you press a download button.
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is CMYK Halftone Separator really free?
Yes. CMYK Halftone Separator is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does CMYK Halftone Separator upload my data?
No. CMYK Halftone Separator runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and CMYK Halftone Separator is ready to use on desktop or mobile.
Does CMYK Halftone Separator work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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