Translating Manga and Subtitles

Casual speech, on-page sound effects, and two-second subtitles. Why media is the hardest thing to machine-translate.

Translation Technology · By Daniel Reyes · Updated Jun 20, 2026

Translating a contract and translating a comic are different jobs. Manga, anime subtitles, and game text run on casual speech, tight space, and on-page sound effects, and each of those breaks a plain translation in its own way.

Speech style carries the character

Japanese marks personality through how a line is phrased, not just what it says. Rough male speech, soft feminine endings, regional accents, and archaic samurai diction all live in word choice and sentence endings.


blunt masculine ending vs softer feminine ending, same basic meaning

English has to rebuild that personality with vocabulary and rhythm, because it has no direct equivalent for a feminine sentence ending. Flatten every character into neutral English and a loud brawler and a shy student start sounding identical. That is the single biggest thing machine output gets wrong here.

Honorifics: keep or cut

Media translation has a long-running split. Some publishers keep -san, -kun, and -senpai and trust readers to absorb them; others strip them for a smoother English read. Neither is wrong, but the choice has to be consistent, and it matters when a relationship shift, like a character finally dropping the suffix, is the actual story beat. The names and titles guide covers the suffixes themselves.

Sound effects are artwork

Those big katakana bursts across a manga panel are drawn into the art. Translating them means either redrawing the lettering, adding a small gloss beside it, or leaving it and trusting context. Many of them are the sound and state words from Japanese, like ドキドキ for a racing heart, which a literal engine renders as a dictionary word with none of the punch. See the onomatopoeia guide for why these resist translation.

A subtitle has roughly two seconds and about forty characters on screen. A perfectly accurate line that nobody can read in time is a failed subtitle, so subtitlers cut and compress in ways a document translator never would.

Space is the constraint

Speech bubbles and subtitle lines have hard limits. English is often longer than the Japanese it renders, so the translator trims to fit the bubble or the reading speed. The skill is keeping the meaning and the voice while losing the word count, which is exactly the kind of judgement a machine engine does not make.

Why machines struggle most here

This is the worst case for raw machine translation: short fragments with no surrounding context, heavy slang, dropped subjects, sound words, and personality encoded in grammar. An engine is a reasonable way to get the gist of a chapter you are reading for yourself. For anything published, it is a starting draft that needs a human who can hear the characters.

DR
Daniel Reyes
Localization editor, Meguro English

Daniel spent eight years in software localization before joining Meguro English, where he writes about how translation technology and media localization work in practice. How we write and review.

Try a sentence in the translator and compare it with the examples above.

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