# wtetsu/mouse-dictionary

📘Super fast browser dictionary

Repository: https://github.com/wtetsu/mouse-dictionary
Canonical: https://ross.abutalabs.com/products/mouse-dictionary
Homepage: https://mouse-dictionary.netlify.app
Language: TypeScript
License: MIT
License Family: permissive
Topics: chrome-extension, firefox-extension, javascript, english, english-dictionary, japanese, japanese-dictionary, english-study, japanese-study, typescript
Last push: 2026-03-19T13:44:31+00:00

## Health v2 (maintenance only)
Score: 72/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 73, release rhythm 55, longevity 100
- inputs: {"age_days": 3370, "days_push": 167, "days_rel": 222, "gap_med": 52, "n_releases_24m": 4}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1096, forks 71 (observed 2026-08-28T04:03:34.456915+00:00)

## What it is
Mouse Dictionary is a super fast browser extension that shows dictionary definitions instantly when you select or hover over words on web pages, PDFs, and YouTube captions. It supports English-Japanese and Japanese-English lookups, custom dictionaries, and a customizable view.

## Use cases
- look up English words while reading web pages
- translate selected text instantly in the browser
- read English PDFs with a built-in dictionary
- study English vocabulary while browsing
- look up words in YouTube captions
- use a Japanese-English dictionary while reading
- add custom dictionary data for specialized terms

## When to choose
- you read English or Japanese web content and want instant word lookups without leaving the page
- you need dictionary support across HTML, PDF, and video captions
- you want a fast, customizable, extensible browser dictionary

## When to avoid
- you need a full-featured translation service for whole sentences or documents
- you need offline dictionary software outside the browser
- you need language pairs other than English/Japanese without importing custom dictionaries

## Facets
- artifact type: plugin
- maturity: active
- function: browser-extension, nlp, internationalization
- domain: browser-extensions, education
- platform: browser, browser-extension
- tags: dictionary, english-japanese, reading-assistant, popup-dictionary, language-learning, localization, natural-language-processing

## Member repositories
- wtetsu/mouse-dictionary (main) score 72

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:34.456915+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:47:12.998077+00:00, confidence not recorded.
  - readme: https://github.com/wtetsu/mouse-dictionary (fetched 2026-08-28T04:03:34.456915+00:00, sha dd87b8e231a4)
  - homepage: https://mouse-dictionary.netlify.app (fetched 2026-08-29T12:50:10.503340+00:00, sha 5e45e38855e2)
- Data as of 2026-08-30T08:39:29.467469+00:00.