Translation guide
The English word "viewer" can refer to a person watching something, a device for looking at images, or software for displaying files. This guide covers how to express these meanings naturally in Japanese.
image viewer (software)
Referring to a person who watches television, movies, videos, or live events.
Standard term for a viewer of TV programs, broadcasts, or online videos. Commonly used in media contexts.
This program is loved by many viewers.
Refers to spectators or audience at a live event, such as a sports game or theater performance. Not used for TV viewers.
Literal 'person who watches'. Casual and general, but less common as a standalone noun. Often used in explanations.
Referring to a physical device used to look at photographic slides, film, or microfilm.
Referring to a computer program that opens and displays files without editing them.
視聴者 is for viewers of broadcast or streamed content (TV, radio, online videos). 観客 is for live audiences at events (concerts, sports, theater). Do not use 観客 for TV viewers.
concert audience
観客は試合に熱狂した。
The spectators went wild over the game.
There are many people who watch this video.
フィルムビューワーを使う。
Use a film viewer.
PDFビューワーをインストールする。
Install a PDF viewer.