What's the difference between Personal and Studio?

Personal ($39) is for one person — unlimited use on one active device at a time. Activate on a new device and the old one signs out. Studio ($199) is for teams and commercial client work — unlimited team members, early access to new tools, and a commercial license.

Do I need an account?

No. Use any tool free up to 5 times per day on compute-heavier tools, and unlimited on lightweight ones. No card, no account, no signup required.

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Right on your device. Files never upload to any server. Everything runs in your browser — you can verify in DevTools → Network.

What happens if I use my Personal license on a second device?

The new device activates and the old device signs out. Your license key stays the same — you just move it between devices as needed. No limit on how often you switch.

Does this work on my phone?

Yes. Every tool works on iPhone, Android, tablet, and desktop.

What if I want a refund?

30-day money-back guarantee on both tiers. No questions asked. Email sales@cipherforces.com.

Will you add more tools?

Yes. New tools ship regularly. Your license includes every tool we ever release — Studio members get early access.

DevBy Daniel BeglaryanUpdated August 2026

Simulate Color Blindness

See how any image looks to people with red-green, blue-yellow, or total color blindness.

PrivateWorks OfflineNo Account

Condition

DeuteranopiaGreen-blind

Missing the medium-wavelength (green) cones. The most common red-green deficiency once you count its milder form (deuteranomaly, ~5% of men).

Severity

100% is the complete form. Lower values approximate the milder, anomalous cases most affected people actually have.

View

Drop an image to simulate

paste works too — Ctrl+V / ⌘V

JPEGPNGWebPHEICAVIFGIFBMP

Max 100MB

Deep dive

About Simulate Color Blindness.

Preview Your Images Through Color-Blind Eyes

Drop in a screenshot, chart, UI mockup, or photo and see it re-rendered the way someone with a color-vision deficiency would perceive it — protanopia (red-blind), deuteranopia (green-blind), tritanopia (blue-blind), or full achromatopsia. Slide the severity down to model the milder, far more common anomalous forms, and compare the original and the simulation side by side.

Most online simulators run the transform on raw sRGB bytes, which is the wrong color space and skews every hue. This one decodes each pixel to linear light first, applies the Machado (2009) matrices — the same public-domain tables Chrome DevTools uses — then re-encodes, so the result is physiologically grounded rather than a rough tint. Everything happens on a canvas in your browser; nothing is uploaded.

One honest caveat: a simulation is a model, not a medical diagnosis, and no two people with color blindness see identically. Treat it as a strong design check — "can this be read without relying on the red-versus-green difference?" — not a clinical result. Your monitor's calibration also affects what you see.

Accessibility QA: Confirm a dashboard or chart stays legible when red and green collapse into the same tone.
Design reviews: Check status colors, buttons, and error states before shipping a UI.
Data visualization: Test whether a heatmap or multi-line chart still separates its series for deuteranopes.
Branding: See how a logo or palette holds up across all three dichromatic conditions.
Slides and signage: Make sure presentations and print pieces don't hide meaning in color alone.
Empathy and education: Show a team, in one glance, why "just make it red" isn't enough.

Privacy: This tool runs entirely in your browser — your image is decoded, simulated, and downloaded locally, with no upload, no server, and no account. Close the tab and nothing is left behind.

Three steps