3 items
Inspired by science, "synthesize" recolors numbers and letters on webpages to induce synesthesia in the user! By default, it runs on all websites, but you can add/remove any website you want. This extension was made with the methodologies of Bor et al. (2014) in mind, where a team of scientists found that by having adults read colored text, they could induce learned grapheme-color synthesia in them, which resultingly increased their IQ by an average of 12 points. In addition to coloring text on webpages, Synthesize has a "passive drill" option that follows the exact methodology of one of the drills Bor et al. used to train synthesia in subjects. In the study itself, this specific drill is given 20 times per training session for one week. Expect regular updates and features added. Support responses will be prompt and user feature recommendations will be followed. Email jeremykalfus [at] gmail.com or use support feature for discussions, comments, sugguestions, or support.
Feb 3, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.