Quick and accurate color blindness test using Ishihara plates. Identifies deficiencies, works offline, and collects no data.

Latest Version

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1.0.0
Update
March 3, 2025
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552KiB
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blindnesstest.com
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3
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Color Blind Test - Fast & Accurate by BlindnessTest Extension

Did you know that 1 in 12 men (8%) and 1 in 200 women (0.5%) have color blindness? Many people go through life without realizing it. Color blindness, also known as color vision deficiency, makes it difficult to distinguish certain colors, which can impact daily life, work, and safety. Whether you struggle with differentiating red and green or confusing blue and yellow, understanding your vision is essential.

The Color Blind Test extension provides a quick and accurate way to check your color vision using scientifically validated Ishihara plates, the gold standard for detecting color blindness. With a few clicks, you can determine if you have normal vision, mild color blindness, or a more significant color vision deficiency. This easy-to-use tool is designed for anyone looking for a fast screening test—all within the convenience of their browser.

🔬 How It Works – Quick & Accurate Color Vision Analysis

The Color Blind Test extension uses Ishihara plates, a widely accepted method for detecting color vision deficiencies. The test presents a series of color plates, each containing a number or pattern hidden among colored dots. Users are asked to identify the number or shape they see on the screen. Based on their responses, the extension evaluates color perception and classifies vision into different categories.

Results are processed instantly without requiring an internet connection. The extension determines whether the user has normal vision, mild color blindness, or a more significant deficiency. The test is optimized for accuracy and convenience, allowing users to assess their vision in just a minute.

🧪 Detected Vision Categories & Interpretation

The test categorizes users into four groups based on their accuracy in identifying numbers on Ishihara plates.

🔴 Strong Color Blind (0-35% accuracy): Users in this category struggle with many colors and may find it difficult to distinguish key color differences. This suggests a severe color vision deficiency, such as Protanopia, Deuteranopia, or strong Tritanopia.

🟥 Red-Green Color Blind (36-45% accuracy): Users in this range have difficulty differentiating red and green shades, the most common form of color blindness. This result suggests Protanopia or Deuteranopia.

🟡 Minor Color Blind (46-75% accuracy): Users in this category experience mild difficulties with some colors, but these challenges do not significantly impact daily life. This result suggests Mild Protanomaly, Deuteranomaly, or Tritanomaly.

🟢 Normal Color Vision (76-100% accuracy): Users with this score can distinguish all colors normally and do not show signs of color blindness.

Your score is calculated based on correct answers, incorrect answers, and unsure responses. The final result helps you understand your level of color vision accuracy.

🚀 Key Features – Why Use This Extension?

The extension provides an accurate and reliable screening method based on the Ishihara Color Blind Test, a widely used clinical standard. It screens for red-green and blue-yellow color blindness using scientifically validated images. Unlike online tests, this extension works completely offline, so you can take the test anytime, anywhere without needing an internet connection.

The simple and intuitive interface makes it easy to use, whether for personal curiosity or as a preliminary screening. This tool is designed for accessibility, making it useful for colorblind individuals, artists, designers, professionals, students, and teachers who rely on accurate color perception.

No special equipment is needed. Unlike professional vision tests that require clinical tools, this extension allows users to test their vision directly in their browser with scientifically designed Ishihara plates.

👨‍👩‍👧‍👦 Who Should Use This Test?

This test is helpful for anyone curious about their vision. If you have ever wondered whether you might be colorblind, this quick screening test provides an initial answer.

Artists and designers benefit from color vision tests, as working with colors requires accurate perception. Ensuring you can differentiate between subtle color variations is essential for professional work in visual fields.

Drivers and pilots need excellent color vision, as traffic signals, dashboard indicators, and navigation instruments often rely on color coding. This test serves as a useful pre-screening tool before official medical vision tests.

Parents and teachers can use this tool to identify color vision deficiencies in children early on, ensuring they do not struggle with color-coded learning materials.

Medical and science professionals often rely on accurate color perception for analyzing samples, reading test results, and diagnosing conditions. Employers and HR professionals who require color vision screening can also use this extension for quick pre-screening.

🔗 Visit Our Website for a More Accurate Test

While this Chrome Extension provides a quick screening test, a more advanced and detailed color vision analysis is available on our website.

Visit Blindnesstest.com for access to additional vision tests, expert analysis, and more ways to understand your color perception. If you want the most detailed and accurate results, take the next step and explore more tests on our site.

❓ Frequently Asked Questions

💡 How accurate is this test?
✅ This extension is based on the Ishihara method, one of the most accurate ways to screen for red-green color blindness. It provides a strong indication of potential vision issues, but it is not a medical diagnosis. For an official evaluation, consult an optometrist or ophthalmologist.

💡 Can this test replace a professional diagnosis?
✅ No, this is a screening tool only. If the test indicates color blindness or if you have concerns, visit a professional for a full examination.


💡 Does this extension test for all types of color blindness?
✅ This test primarily detects red-green color blindness (Protanopia and Deuteranopia), which is the most common type. It can also indicate signs of blue-yellow color blindness (Tritanopia), but for a full diagnosis, a professional eye test is recommended.

💡 Can I use this test on different screens or monitors?
✅ Yes, but keep in mind that monitor settings, brightness, and color accuracy may affect results. For the best experience, use a well-calibrated screen with normal brightness and color settings.

💡 Why do I see different results on different attempts?
✅ Variations in lighting, display settings, and how well you focus on the plates can affect results. If your scores vary significantly, try taking the test under consistent lighting conditions for more reliable results.

💡 Is this extension suitable for young children?
✅ Yes, but younger children may struggle to recognize and input numbers accurately. If testing a child, parental guidance is recommended to ensure they understand the task.

💡 Does this extension store or save my test results?
✅ No, the extension does not store or save any test data. Your results are displayed immediately after the test and are not recorded.

💡 Can color blindness develop over time?
✅ Yes, while most color blindness is genetic, certain medical conditions, medications, or eye injuries can lead to acquired color vision deficiencies. If you notice changes in your color perception, consult an eye specialist.

💡 Will this test work on mobile devices?
✅ This extension is designed for desktop use in the Chrome browser. If you’re looking for a mobile test, visit our website Blindnesstest.com for mobile-friendly testing options.
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Source Manifest.json

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How to download and manually install Color Blind Test - Fast & Accurate by BlindnessTest extension for Chrome

Looking for a way to install Color Blind Test - Fast & Accurate by BlindnessTest extensions for Chrome, you can search for them in the Chrome Web Store, clicking the "Add to Chrome" button, and following the straightforward process.

However, you may need to install Color Blind Test - Fast & Accurate by BlindnessTest extensions manually, this article outlines two simple methods to effortlessly install Color Blind Test - Fast & Accurate by BlindnessTest extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.

Method 1: Download Color Blind Test - Fast & Accurate by BlindnessTest extension and manually install through Drag &Drop

If you ever need to manually install a Color Blind Test - Fast & Accurate by BlindnessTest extension for Chrome, don't worry, it's a simple process. Just follow these easy steps, and you will have your extension ready to use in no time.

Step 1: Download the Color Blind Test - Fast & Accurate by BlindnessTest Extension by clicking the "Download CRX" button on the website.

Look for the Color Blind Test - Fast & Accurate by BlindnessTest extension you wish to install. Go to the website and download the Color Blind Test - Fast & Accurate by BlindnessTest extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for Color Blind Test - Fast & Accurate by BlindnessTest extension that contains all the data.

Step 2: Extract &Arrange Files

Once the file is downloaded, extract that file into its own folder. Similarly, give that extension files a permanent home. In other words, keep it in a folder that you don't accidentally delete it because these files will be needed to make that extension work.

Step 3: Go to the Chrome Extensions Page

Open Google Chrome and in the address bar, type chrome://extensions; it will open the Google Chrome extensions page. Make sure that "My extensions" is selected in the sidebar.

Step 4: Drag and Drop the Extension

Now, go to the folder where you extracted the Color Blind Test - Fast & Accurate by BlindnessTest extension and drag &drop the extension file from there anywhere onto the extension page within Google Chrome.

Step 5: Complete the Installation

Once you drag and drop the extension file, follow the steps that Google Chrome takes you through. Similarly, if the extension file is of .crx file format, you will be required to review the permissions and then add the extension.

Now, you can manage that added extension as you would like to with any other Chrome extension that you added through Chrome Webstore. Its icon will also appear in the Google Chrome Menu on the right side of the address bar once you activate it.

Method 2: Download Color Blind Test - Fast & Accurate by BlindnessTest extension for Chrome and install in Developer Mode

This is another method to install Color Blind Test - Fast & Accurate by BlindnessTest extension manually, but the twist is that here, you install by enabling the developer mode option provided in Google Chrome. This mode is commonly used for testing extensions or running unpublished tools.

Step 1: Download the Color Blind Test - Fast & Accurate by BlindnessTest extension file

Select and download the Color Blind Test - Fast & Accurate by BlindnessTest extension by clicking the 'Download CRX' button on the website.

Step 2: Extract the downloaded contents

Convert the file to a ZIP file if it is in CRX format then extract the Color Blind Test - Fast & Accurate by BlindnessTest extension zip file or folder that you downloaded. Make sure you extract it using the same folder name and keep it safely in another folder, so you don't delete it by mistake. The extracted folder will be needed to keep your Color Blind Test - Fast & Accurate by BlindnessTest extension running.

Step 3: Open Chrome Extension Setting Page

In the address bar of Google Chrome, type chrome://extensions and open the Chrome Extension Page.

Step 4: Enable Developer Mode

After opening the Chrome Extension page, look at the top right side, and you will find the toggle option of "Developer mode."Simply enable that developer mode option.

Step 5: Load the Unpacked Extension

Once you enable the developer mode option, you will see the menu of Load Unpacked, Pack Extensions and Update. From that, select the option "Load unpacked."

Step 6: Select the Extension Folder

Once the pop-up opens upon clicking Load unpacked, select the Color Blind Test - Fast & Accurate by BlindnessTest extension directory and click on the "Select Folder "button.

Step 7: Confirm and Install

After you select an extension folder of a Google Chrome extension you're installing manually, confirm its installation for the final time and let the installation complete.

Conclusion

Here we've made a step-by-step guide on How to manually install Color Blind Test - Fast & Accurate by BlindnessTest extension in 2 ways. We hope this guide proves helpful.

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