Vision Simulator for Chrome
Simulates protanopia, deuteranopia, tritanopia, achromatopsia, and blurred vision directly on the live webpage.
Replaces:
ColorblindlyNoCoffee Vision Simulator
Why Developers Switch to OmniDev
Installing a separate browser extension just for vision simulator bloats Chrome memory, adds permission risk, and clutters your toolbar. OmniDev integrates Vision Simulator natively alongside 53 other frontend and QA tools.
Simulates protanopia, deuteranopia, tritanopia, achromatopsia, and blurred vision directly on the live webpage.
Runs inside an isolated Shadow DOM panel so host page styles never break or leak
Zero background RAM overhead when idle — lazy-loaded on demand in milliseconds
Replaces standalone Colorblindly, NoCoffee Vision Simulator extensions inside a single 54-in-1 toolkit
Shadow-DOM isolated • Zero host-page CSS leakage
STEP 01
Install OmniDev from the Chrome Web Store and open the popup or press your custom shortcut.
STEP 02
Select "Vision Simulator" under the Analytics category (or search "Vision Simulator" in the launcher).
STEP 03
Inspect, capture, or export results directly on the live page — 100% locally in your browser.
See How OmniDev Compares
Detailed side-by-side comparisons against standalone Chrome extensions:
Frequently Asked Questions — Vision Simulator
Is the Vision Simulator tool in OmniDev completely free?
Yes. Vision Simulator and all 54 tools in OmniDev are 100% free to use with no account signup or paywall.
Does Vision Simulator send my webpage data to an external server?
No. Vision Simulator runs locally inside your browser tab. OmniDev is architected local-first and never uploads your DOM, storage, or network payloads to a Jambo backend.
Which standalone Chrome extensions does Vision Simulator replace?
Vision Simulator replaces single-purpose extensions such as Colorblindly, NoCoffee Vision Simulator, saving browser RAM and reducing extension permission sprawl.
More Analytics Tools in OmniDev
Every tool below is included in the same single Chrome extension install.
Explore All 54 Tools
Performance Analyzer
Measures real-time Core Web Vitals (LCP, CLS, INP, FCP, TTFB), resource weight breakdown, and DOM complexity.
SEO Checker
Audits on-page SEO health: title/description length, canonical tags, robots directives, heading hierarchy (H1–H6), and missing alt attributes.
Storage Inspector
Unified browser storage explorer to inspect, search, edit, and clear localStorage, sessionStorage, and cookies.
Tech Stack Analyzer
Detects frontend frameworks (React, Next.js, Vue, Nuxt, Svelte, Astro), UI libraries, analytics, CDNs, and server headers locally.
Accessibility Checker (a11y)
Runs an instant WCAG accessibility audit checking color contrast ratios, ARIA roles, form labels, landmarks, and missing alt text.
Design Drift Inspector
Audits the live DOM against your design system tokens to catch off-palette colors, rogue font sizes, and non-standard spacing values.
Get Vision Simulator + 53 More Tools in 1 Click
Stop cluttering Chrome with dozens of single-purpose extensions. Install OmniDev free and run everything locally.
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