Synesthetize - activate your synesthesia

Color individual characters, numbers, or words on pages you view to induce grapheme-color synesthesia as you surf the web.

As of June 2026, Synesthetize - activate your synesthesia has 355 users and a 4.23/5 rating from 30 reviews in the fun category.

Usersup 2.0 percent+2.0%
355
355
Ratingno change0%
4.23
30 reviews
Reviewsno change0%
30
Version
1.15
Manifest V3

History

5 snapshots

Tracking since Apr 1, 2026.

367.44357346.56Apr 1, 2026Jun 1, 2026
View as table
DateUsersRatingReviewsVersion
Apr 1, 20263484.23301.15
Apr 21, 20263634.23301.15
May 7, 20263664.23301.15
May 18, 20263624.23301.15
Jun 1, 20263504.23301.15
Now3554.23301.15

Permissions & access

Permissions
activeTabstorage
Host access
None declared

Screenshots

Synesthetize - activate your synesthesia screenshot 1

About

A study by scientists in the Netherlands has shown that it may be possible to induce color-graphemic synesthesia  (viewing letters as having an innate color) by reading text containing letters with a consistent color coding.

Replicate their experiment at home with the synesthesia-inducing Synesthetize Chrome extension. You can now develop your color-letter, color-number, or color-word synesthesia as you surf the web.  Synesthetize can be configured to color as many or as few words, letters, or numbers as you want in the colors you prefer to customize the effect to your liking. If you have synesthesia, you can even color-code letters, words, or numbers to specific colors that match your existing synesthetic association.

You can also quickly disable the extension for certain websites if you'd prefer those specific sites to not be color-coded.

Now supports pages where content loads gradually, e.g. infinite scroll websites or comment sections.

Read the study that inspired the extension: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0039799

Support me https://tiptopjar.com/soggytiger 

Source available at: https://github.com/gsavvas/Synesthete

Technical

Version
1.15
Manifest
V3
Size
57.31KiB
Min Chrome
88
Languages
1
Featured
No

Metadata

ID
ldljgghnflfphlnpneghciodeehilana
Developer ID
ue03c90ec902fdead81cfc04f814d41c1
Developer Email
[email protected]
Created
Jul 15, 2012
Last Updated (Store)
May 22, 2025
Last Scraped
Jun 1, 2026
Website
Support URL
Privacy Policy

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Data sourced from the Chrome Web Store · last verified Jun 1, 2026.