Weblio
Weblio is an online dictionary service available through web, iOS, Android, and a Chrome extension.
What Weblio is
Weblio is an online dictionary service available through web, iOS, Android, and a Chrome extension. Its integrated search covers kanji, thesaurus, English-Japanese, Japanese-English, and sign-language dictionaries. The Japanese dictionary app searches more than 600 specialist dictionaries, Japanese dictionaries, and encyclopedias at once, with handwriting lookup, favorites, history, linked explanations, and swiping between results. The English dictionary app states that it searches over 10 million English words and more than 9 million example sentences, adding pronunciation symbols and audio playback. Weblio is intended for English learners, students, people communicating with English speakers, and those assisting non-Japanese speakers. The free dictionary app contains ads. Google Play says Japanese-app data is encrypted in transit, but users cannot request deletion of that app data. The service covers two languages, offers translation lookup, audio pronunciation, and usage examples, and does not provide offline access.
Good
- Searches more than 600 Japanese references
- English app lists over 10 million words
- Handwriting search and saved favorites
- Pronunciation symbols and audio
- Available on web, iOS, Android, and Chrome
Watch out
- No offline access
- Free dictionary app contains ads
- Japanese app data deletion cannot be requested
- Coverage is listed as two languages
Who it suits
Weblio suits learners, students, and people needing Japanese-English or English-Japanese reference with examples and pronunciation. It is also useful for broad Japanese dictionary searches across many sources.
Verdict
Weblio combines extensive Japanese dictionary searching with English lookup, examples, and audio. Its online-only access, ads, and stated two-language coverage should guide your choice.
Plans and prices
From Weblio's own pricing page, checked 8 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free dictionary app | Free | Dictionary features are free · App contains ads |
The facts
Each one read from Weblio's own pages, with the date it was checked.
What it does
- Brand history
- GRAS Group's history says the Weblio service began in January 2006 with 11 dictionaries.checked 8 Oct 2026
- Chrome extension
- GRAS Group's company history records the launch of the Weblio Popup English-Japanese Dictionary Chrome extension in 2010.checked 8 Oct 2026
- Data security
- Google Play states that the Japanese dictionary app's data is encrypted in transit and that users cannot request deletion of the app data.checked 8 Oct 2026
- Dictionary coverage
- The Japanese dictionary app searches across more than 600 specialist dictionaries, Japanese dictionaries, and encyclopedias at once.checked 8 Oct 2026
- English dictionary
- The English dictionary app states that it searches more than 10 million English words and more than 9 million example sentences, and provides pronunciation symbols and audio playback.checked 8 Oct 2026
- Intended users
- The English dictionary app recommends itself for English learners, students, and people who want to communicate with English speakers or assist non-Japanese speakers.checked 8 Oct 2026
- Mobile availability
- The Japanese dictionary app is listed for iPhone and iPad and is described as free to use.checked 8 Oct 2026
- Privacy
- GRAS Group says it uses organizational, personnel, physical, and technical safeguards for personal information and operates a personal information protection management system based on JIS Q 15001.checked 8 Oct 2026
- Service
- Weblio is an online service for searching dictionaries, including an integrated dictionary search, kanji, thesaurus, English-Japanese, Japanese-English, and sign-language dictionaries.checked 8 Oct 2026
- Support
- The English dictionary app lists support by email at [email protected].checked 8 Oct 2026
The company
- Company
- GRAS Group identifies its business as including an online dictionary service and lists its Tokyo headquarters in Minato, Tokyo.checked 8 Oct 2026
- Founded
- GRAS Group lists its establishment date as August 12, 2005.checked 8 Oct 2026
Where it runs
- Japanese app features
- The Japanese dictionary app supports handwriting search, saved favorites, search history, linked term explanations, and swiping between prior and next results.checked 8 Oct 2026
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