That Is

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

As of May 2026, That Is has 18 users in the Education category.

Usersdown 53.8 percent53.8%
18
18
Ratingno change0%
— reviews
Reviewsno change0%
Version
1.1
Manifest V3

History

2 snapshots

Tracking since Apr 27, 2026.

42.8429.516.16Apr 27, 2026May 24, 2026
View as table
DateUsersRatingReviewsVersion
Apr 27, 2026391.1
May 24, 2026411.1
Now181.1

Permissions & access

Permissions
activeTabscriptingstorage
Host access
None declared

Screenshots

That Is screenshot 1That Is screenshot 2That Is screenshot 3

About

This is "That Is".

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

> "I'm not sure what [that] is but <b>That Is</b> 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.
Translation services are too convenient and remove the practice completely.

Create custom mappings with the right level of coverage for you. From translations above every new word you learn to personal mnemonics and hints for how to read new symbols, let your own guides follow you across the web at the click of a button.

Use one of the built-in default mappings and edit it to fit your needs.
- Hiragana to katakana
- Katakana to hiragana
- Hiragana to romaji
- Romaji to hiragana
- Hiragana to IPA
- Katakana to romaji
- Romaji to katakana
- Greek alphabet minus English overlap to English names
- Greek alphabet to English names
- Greek alphabet to English pronunciation guide
- ... more to come

Technical

Version
1.1
Manifest
V3
Size
66.27KiB
Min Chrome
88
Languages
1
Featured
No

Metadata

ID
kpfogaicnplnhahgcmjadkammdfmmdfm
Developer ID
u0d0a94f60e8ed95a3f6fa3db3dab2207
Developer Email
[email protected]
Created
May 21, 2024
Last Updated (Store)
May 24, 2024
Last Scraped
May 24, 2026
Website
Privacy Policy

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Data sourced from the Chrome Web Store · last verified May 24, 2026.