Weblio

Free plan AndroidExtensioniPhoneWeb

What Weblio is

Weblio is an online dictionary search service with integrated tools for kanji, thesaurus, English-Japanese, Japanese-English, and sign-language lookup. Its Japanese dictionary app searches across more than 600 specialist dictionaries, Japanese dictionaries, and encyclopedias. That app supports handwriting search, favorites, search history, linked term explanations, and swiping between previous and next results. The English dictionary app states that it searches more than 10 million English words and more than 9 million example sentences, with pronunciation symbols and audio playback. Weblio is available on the web, iOS, and Android, and a Chrome extension for English-Japanese lookup is also recorded in the company history. The free dictionary app contains ads. The Japanese app is listed for iPhone and iPad; Google Play says its data is encrypted in transit, and users cannot request deletion of that app data. The English app recommends itself to English learners, students, and people communicating with English speakers or helping non-Japanese speakers. Weblio includes translation lookup, audio pronunciation, and usage examples, and does not offer offline access.

Who it suits

Weblio may suit Japanese dictionary users who want broad dictionary search and handwriting lookup. Its English dictionary app is presented for learners, students, and people communicating with English speakers.

What it does well

Japanese app searches more than 600 dictionaries and encyclopedias.
Handwriting search and saved favorites are available.
English app includes pronunciation symbols and audio.
Available on web, iOS, and Android.
Free dictionary app is available.

What to know first

Offline access is not available.
Free dictionary app contains ads.
Users cannot request deletion of Japanese app data.

Limits

The free dictionary app plan costs nothing and contains ads. Weblio does not provide offline access, and its listed language coverage is two languages.

Plans

Plan	Billed and limits	Price
Free dictionary app	Dictionary features are free · App contains ads	Free

As weblio.jp lists them, read 8 Oct 2026. The maker's own page has the final word.

Getting started

Open https://www.weblio.jp/ in a browser
Install the iOS or Android dictionary app
Search a word, translation, kanji term, or thesaurus entry
Use handwriting search or browse linked explanations in the Japanese app
Add useful results to favorites or review search history
Install the Chrome English-Japanese dictionary extension

Verdict

Weblio combines Japanese dictionary search with English lookup, examples, and audio across several platforms. Consider the lack of offline access and the stated data deletion limitation for the Japanese app.

Questions

Is Weblio free?

The free dictionary app plan costs nothing, and the Japanese app is described as free to use. The free app contains ads.

Which platforms support Weblio?

Weblio is available on the web, iOS, Android, and browser extensions. The Japanese app is listed for iPhone and iPad.

What dictionaries can Weblio search?

Its integrated search includes Japanese, kanji, thesaurus, English-Japanese, Japanese-English, and sign-language dictionaries. The Japanese app searches more than 600 specialist dictionaries, Japanese dictionaries, and encyclopedias.

What does the English dictionary include?

It searches more than 10 million English words and over 9 million example sentences, with pronunciation symbols and audio playback.

Does Weblio work offline?

No. Offline access is unavailable.

Is Weblio available as a Chrome extension?

Yes. A Weblio Popup English-Japanese Dictionary Chrome extension is available.

Facts from Weblio's own pages

Brand history: GRAS Group's history says the Weblio service began in January 2006 with 11 dictionaries. · gras-group.co.jp, 8 Oct 2026
Chrome extension: GRAS Group's company history records the launch of the Weblio Popup English-Japanese Dictionary Chrome extension in 2010. · gras-group.co.jp, 8 Oct 2026
Company: GRAS Group identifies its business as including an online dictionary service and lists its Tokyo headquarters in Minato, Tokyo. · gras-group.co.jp, 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. · play.google.com, 8 Oct 2026
Dictionary coverage: The Japanese dictionary app searches across more than 600 specialist dictionaries, Japanese dictionaries, and encyclopedias at once. · play.google.com, 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. · play.google.com, 8 Oct 2026
Founded: GRAS Group lists its establishment date as August 12, 2005. · gras-group.co.jp, 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. · play.google.com, 8 Oct 2026
Japanese app features: The Japanese dictionary app supports handwriting search, saved favorites, search history, linked term explanations, and swiping between prior and next results. · play.google.com, 8 Oct 2026
Mobile availability: The Japanese dictionary app is listed for iPhone and iPad and is described as free to use. · apps.apple.com, 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. · gras-group.co.jp, 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. · apps.apple.com, 8 Oct 2026
Support: The English dictionary app lists support by email at [email protected]. · play.google.com, 8 Oct 2026

Where Weblio stands on Freedom251

Online Dictionaries#25 of 39