plug-in vs browser tab
An UltraSeps alternative that does not sit inside Photoshop
* Free to use — the editor runs in your browser, and nothing is uploaded unless you start a server step: the AI tools, or upscaling a photograph (logos and flat artwork are enlarged on your device). A free account (Google, Apple or an emailed code — no card) is needed to download the finished file, and comes with credits for the server-side tools.
UltraSeps is a well-established Photoshop plug-in bought outright, and the single biggest practical difference between it and this is not a feature — it is that UltraSeps needs a full Photoshop licence underneath it and this needs a browser tab. That decides more purchases in this category than any separation setting does, so it is what this page is about.
Try a separation freeWhat UltraSeps is, as its vendor describes it
UltraSeps is colour separation software sold by Extreme Sportswear as a one-time purchase. When we checked the vendor site on 28 July 2026 it was listed at $399, discounted from $599, and version 3 requires no unlock code to install. The vendor describes the licence as site-wide across your machines at no extra cost, but qualifies that itself as an honour system — it asks shops with multiple users to buy additional copies — so treat it as a trust-based allowance rather than a licence term you can lean on. It runs as a plug-in and automation set inside Adobe Photoshop — the vendor states Photoshop CS3 or higher, full Photoshop rather than Elements — on Windows or Mac, with an Apple Silicon build. The vendor advertises eight forms of colour separation including three separate simulated process modules, custom spot channels, and underbase and highlight white tools, plus a 15-day free trial that the vendor describes as the full previous version rather than a limited build. Prices and versions change; check the vendor site rather than trusting this page.
Where UltraSeps is likely the better choice
If you already own and use Photoshop daily, a tool that lives inside Photoshop is genuinely convenient — your separation happens where your retouching already happens, in channels you already understand. If you run high volumes of simulated process work, a mature package with years of press-tested routines behind it is worth real money, and buying once rather than subscribing suits a shop that hates recurring bills. And a one-time purchase you own forever has an obvious appeal that a monthly plan does not. None of that is something we are going to argue you out of.
Where this is genuinely different
Four differences that are structural rather than a feature list. It runs in a browser, so there is nothing to install and no Photoshop licence required underneath — which matters most on the older art station a lot of shops actually separate on. It starts genuinely free: spot and index separation, ink editing, per-plate preview, and PNG/ZIP/ORA export cost nothing. The free path is client-side, so your artwork makes no network call at all during separation — not a privacy promise, an architectural fact you can verify with the browser network tab. And the free output includes both PSDs: a real layered PSD, and a multichannel PSD with actual Photoshop spot channels carrying their ink colours and names. Per-plate film and the print maths are the paid half; spot channels are not.
The cost comparison, plainly
UltraSeps was $399 one-time when we checked, on top of whatever your Photoshop subscription costs. Here you pay nothing to separate spot and index artwork, and the print-ready render — halftones, choked underbase, highlight white, choke and spread, trapping, dot gain, registration marks, vector plates, CMYK and simulated process — is 10 credits per image with free re-renders of that image for 24 hours. The multichannel PSD with real spot channels is not in that list because it is free, written in your browser. Credits come with a monthly plan, or as a one-off pack whose credits never expire — see the pricing page for current prices in your currency. A render is ten credits an image. Which model is cheaper depends entirely on your volume, and if you separate constantly the one-time purchase will win eventually.
What we do not have
We are new at this and they are not. We have no decades of accumulated press-tested presets, no Photoshop panel to work inside, and no built-in print driver — we output plates, film, PSD and SVG, and your existing RIP or workflow takes it from there. Our simulated process ships with per-channel curve and density override precisely because auto sim-process is unreliable in every tool that sells it, including ours; if you were hoping for a magic button, no honest vendor has one. What we will not do is watermark, downscale, or degrade output on any tier — the free tier caps quantity, never quality.
How to decide in ten minutes
Take a real job off your queue — not a clean vector logo, an actual customer file. Run it here for free and look at the plates: is every letter of the lettering on one screen, are the edges clean, is the ink count sane. Then download UltraSeps' trial and run the same file. You will learn more from that than from any comparison page, including this one. Both tools being free to try is the point.
Frequently asked
Do I need Photoshop to use this?
No, and that is the point of this comparison. UltraSeps is a plug-in and automation set that runs inside Adobe Photoshop — the vendor states CS3 or higher, full Photoshop rather than Elements — so its real cost includes a Photoshop subscription you keep paying. This runs in a browser tab with nothing installed and no Adobe licence anywhere in the chain. You can still open the exported PSD in Photoshop, Photopea, Affinity or GIMP if you have one.
How does a one-time purchase compare with credits?
UltraSeps was vendor-listed at $399 one-time (discounted from $599) when we checked on 28 July 2026, plus Photoshop. Here spot and index separation are free forever and the print-ready render is 10 credits per image, from a monthly plan or a one-off pack — see the pricing page for current prices in your currency. If you render seps daily for years, a perpetual licence wins on total cost eventually; if you separate occasionally, or you would have to buy Photoshop to run it, it does not. Do that arithmetic with your own volume rather than ours.
Can it do simulated process like UltraSeps do?
It does spot, index, CMYK and simulated process. UltraSeps advertises eight forms of separation including three separate simulated-process modules, which is more ways to attack a photograph than we offer. What is the same in both is the part that matters: neither is a one-button answer. We ship per-channel curve and density override alongside the automatic pass, because fully automatic sim-process is unreliable in every tool that sells it, theirs and ours included.
Can several people in the shop use it?
Anyone with a browser, on any machine, with no seat to activate — including the old art-room PC that could not run Photoshop. UltraSeps' vendor describes its licence as site-wide across your machines at no extra cost but qualifies that itself as an honour system, asking shops with multiple users to buy additional copies, so treat it as a trust-based allowance rather than a licence term. Our free tier has no seat concept at all; credits are per account.
What does the free trial actually get me, on each side?
UltraSeps offers a 15-day free trial that the vendor describes as the full previous version rather than a limited build, so you are evaluating last year's product. Ours is not a trial: spot and index separation, ink editing, per-plate preview, PNG/ZIP/ORA export are permanently free with no clock, on the current build; the layered PSD needs a free account and is one a day. Take one real customer file through both.
What output formats do I get?
Free, in the browser: per-ink PNG plates, a numbered ZIP, ORA, a layered PSD, and a multichannel PSD with real spot channels carrying their ink colours and names (the two PSDs share a three-a-day allowance on the free tier, uncapped with credits). On the paid render: pre-halftoned 1-bit film at 600 or 1200 dpi, continuous-tone greyscale plates, per-plate SVG for flat art, and a proof over your garment colour.
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