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Spectrum

Instantly test your web page with different types of color vision deficiency.

Users10KCurrent public install base
Rating3.8Store average score
Reviews56Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview

Spectrum Media preview

6 assets
Trend

User growth trend

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User Growth Over Time

10K10K10K10K10K2026年7月15日2026年7月18日2026年7月21日Latest: 10K
Rating trend

7-day rating trend

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7-day rating change

Start
3.77
Latest
3.77
7-day rating change
0.00
3.673.723.773.823.872026年7月15日2026年7月18日2026年7月21日Latest: 3.77
2026年7月15日2026年7月21日
Growth overview

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1-day growthNo data
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7-day growthFlat
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30-day growthNo data
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Technical snapshot

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Version0.6.0
ManifestV3
Size21.26KiB
Languages1English
Published
Store updated
Last crawled
English
Overview

Product summary

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Color Vision Deficiency (CVD) affects people’s ability to distinguish certain colors. Estimates indicate that approximately 200 million people worldwide are affected by some kind of CVD. Individuals of Northern European ancestry, as many as 8 percent of men and 0.5 percent of women experience the common form of red-green color blindness.

This extension helps you to test web pages for people with different types of CVD. It's particularly useful for websites with data visualisations, because some colors may not be distinguishable from other colors in the charts.

Flash enabled websites are also supported!

Reviews

Recent review snapshot

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Store average score3.8Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average3.6Average computed only from synced review bodies below
Reviews with text37Synced review bodies
Total ratings / reviews56Chrome Web Store public rating/review count

Store average score: 3.8. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.

5★
13
4★
12
3★
1
2★
5
1★
6
Jake Riley2016年4月14日
4

EDIT: You have to refresh the page. Previous: 1-star Does not seem to work. "Options" is greyed out.

Language en
Lucas Francois2016年3月24日
5

How to show people what I see, I love it ^^

Language en
1 helpful · 1 not helpful
Eric Scoles2016年3月13日
4

I don't have a way of assessing how accurately it represents the colorblind experience, but it does something and is straightforward in operation. Caveat: this does not appear to modify all DOM objects. E.g., background images were unmodified, as were some outer DOM containers. So treat it only as a general indicator, don't try to treat is as a real compliance test.

Language en
AxlWolfU / MRP2016年2月11日
5

Excellent simulator

Language la
1 helpful · 0 not helpful
Drew Cossey2016年1月4日
1

Sounds like a great extension but it doesn't seem to work for me.

Language en
Luiz K.2015年12月11日
5

Very usefull, and works great

Language en
1 helpful · 0 not helpful
Matthew Spielman2015年11月9日
1

doesn't work

Language en
1 helpful · 0 not helpful
Christian Hinz2015年9月23日
1

doesnt work

Language en
Vicary A2015年9月18日
4

Simple and easy to use. But the checked mark resets every time I pull up the menu, it never shows the correct mode I have switched on previously.

Language en
Johnny Muen2015年8月4日
1

Doesn't work

Language en
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