Colorblindly icon

Colorblindly Chrome Extension Analysis

Developer & Designer Tools

Chrome extension ID: floniaahmccleoclneebhhmnjgdfijgg

Colorblindly is a web accessibility extension that overlays color-adjusting filters on active browser tabs to simulate various forms of colorblindness. Users can choose from eight distinct settings, including deuteranomaly, protanopia, and tritanopia, to test visual designs. The tool aims to help creators evaluate contrast and color-based informational cues on their websites.

Developer:oftheheadland
Version:2.5
Size:85.17KiB
Last updated:

Overview

Installs

50K+

Rating

3.5

51 reviews

Languages

1 locales

Includes English

Market analysis

Review-backed positioning, friction, and market signals for this Chrome extension.

Backed by review samples

Macro category

Developer & Designer Tools

Pricing friction

Low review signal

Complaint intensity

High review signal

Listing & review signals
Observed signals from store listing text and review samples.

Listing positioning

Colorblindly positions itself as an accessibility utility for developers to simulate how users with color vision deficiencies experience websites. It offers eight distinct colorblindness settings directly within the browser to facilitate inclusive web design. The listing explicitly notes that it is designed to work on standard web pages but cannot run on system Chrome domains.

Inferred product pattern

Client-side CSS or SVG filter injector overlaying color matrix transformations on the active DOM.

Review-backed pain points

A significant majority of recent reviews indicate the extension is completely broken and fails to apply any color filters upon selection. New users also face usability frustration, noting a complete absence of instructions on how to activate or control the simulation interface.

Observed feature gaps

Observed gaps include support for local file testing (file:// protocol), which is highly important for web development, and an integrated onboarding guide or interactive help section to explain how to trigger the extension filters.

Tags
Colorblindness SimulatorWeb AccessibilityDeveloper ToolsUI Design
Target users

- web developers

- UI/UX designers

- accessibility specialists

- QA testers

Primary use cases

- simulating colorblindness on live web pages

- testing website compliance with color contrast accessibility standards

- evaluating UI readability for users with color vision deficiencies

Positive themes

- historically useful tool for simulating web accessibility conditions

- straightforward concept with highly relevant filters for design evaluation

Negative themes

- extension fails to apply filters on any active web page

- lack of onboarding or clear usage instructions in the interface

- inability to function on locally hosted web pages

Observed friction

- Performance complaints detected

- No pricing complaints were observed; the extension is free and open-source.

Evidence boundary: The analysis is based on the public Chrome Web Store listing metadata, developer links to GitHub, and a sample of ten user reviews spanning from 2020 to 2026. The review sample is heavily skewed towards negative ratings reporting software breakage, meaning historical positive sentiment may be underrepresented.
Complaint summaries
Review-backed complaint signals grouped by operational area.

Support

No official support complaints were filed, but user reviews highlight a lack of maintenance, with bugs remaining unfixed for years.

Reliability

Multiple users across several years report that the extension has stopped working entirely, stating that clicking the filters has no visual effect on web pages.

Privacy

No privacy or security concerns were reported by users.

Access & pricing

- Free usage observed

- No account requirement observed

- Free plan or free usage claimed

Store listing facts

Listing assets

- Screenshots: 3

- Videos: 0

- Languages: 1

Trust signals

- Developer contact

- Official website

Store metadata

- Version: 2.5

- Size: 85.17KiB

- Last updated:

Store description excerpt
Short excerpt from the public Chrome Web Store listing; full copy is available on the official store page.
Colorblindly is an extension that helps developers create websites for the people with colorblindness by allowing them to simulate the experience those users have on websites. There are 8 different settings to experience: -Blue Cone Monochromacy / Achromatomaly -Monochromacy / Achromatopsia -Green-Weak / Deuteranomaly -Green-Blind / Deuteranopia -Red-Weak / Protanomaly -Red-Blind / Protanopia -Blue-Weak / Tritanomaly -Blue-Blind / Tritanopia *Note* This extension will not work on Chrome domains like the store page. Try it out on a different website like Google Image Search Results!

Listing SEO keywords

Search intent keywords
Keyword signals for evaluating how users may discover, compare, or search for this extension category.

Core discovery

colorblindness simulator chromeweb accessibility testersimulate deuteranomalycolor contrast extension

Comparison

colorblindly vs toptal filter

Problem

how to test website for colorblindnessweb accessibility design testing

Alternative

colorblindly alternativechrome colorblind filter

Similar extensions

Jump to related discovery paths:

FAQ

What is Colorblindly mainly used for?
Colorblindly is a web accessibility extension that overlays color-adjusting filters on active browser tabs to simulate various forms of colorblindness. Users can choose from eight distinct settings, including deuteranomaly, protanopia, and tritanopia, to test visual designs. The tool aims to help creators evaluate contrast and color-based informational cues on their websites.
What market signals stand out?
Visible niche traction with limited review base. Last known update: 04/24/2025.
What should builders compare before entering this space?
Compare install concentration, rating quality, update recency, screenshots, developer portfolio, listing claims, and review-backed friction signals.
Is this page review-backed?
Backed by review samples. This page combines store metadata with selected review signals, while raw store metrics remain visible for comparison.

Screenshots

Colorblindly screenshot
Colorblindly screenshot
Colorblindly screenshot

Links

Website: github.com

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