Education
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That Is icon

That Is

Insert ruby-text above text on webpages based on user-created mappings.

Users4Current public install base
Rating--Store average score
Reviews0Public review volume
Manifest versionV3Extension platform version
7-day growth-1Net users gained this week
7-day growth rate-20%Relative weekly velocity
Preview

That Is Media preview

3 assets
Trend

30-day user trend

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User Growth Over Time

445662026年6月22日2026年6月25日2026年6月28日Latest: 4
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Growth overview

Daily, weekly, and monthly growth

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1-day growthDeclining
-2-33.3%
7-day growthDeclining
-1-20%
30-day growthDeclining
-2-33.3%
Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version1.1
ManifestV3
Size66.27KiB
Languages1English
Published
Store updated
Last crawled
English
Overview

Product summary

Review the store description, core capabilities, and common use cases.

This is "That Is".

For those who don't already know that That Is is what helps you remember what [that] is, just remember:

> "I'm not sure what [that] is but That Is is what reminds me of it."

With this (i.e. "That Is"), you can create custom definitions for any text (e.g. words, symbols, phrases). When you come across a page containing the text you've defined before, you can annotate the defined text where it appears on the page to remind yourself about the text (i.e. what [that] is).

Learning a new language? Having trouble recognizing new words or symbols?

Dictionaries are too inconvenient and interrupt reading practice.

Reviews

Recent review snapshot

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