Translate App Store Screenshots to Korean

Unlike Japanese and Chinese, Korean separates words with spaces. The W3C Requirements for Hangul Text Layout (opens in a new tab) state in section 5.2 that "in principle, Korean words are separated by spaces." The spacing unit is the eojeol, a word plus any particles or endings attached to it.

This catches teams that reuse a CJK pipeline or copy settings from a Japanese layout. Stripping the spaces from a three-word Korean caption meaning "organize photos easily" leaves one unbroken string that Korean readers struggle to parse.

The opposite mistake happens too. Particles, such as the object markers and the particle meaning "at" or "from", attach directly to the preceding noun, so a space before them is wrong. Watch for it whenever someone edits a caption by hand.

KLREQ section 7.1.1 allows two approaches when a line ends in Hangul: break at any syllable, or break only between words. Documents can pick either, but short marketing headlines read far better with word-based breaks.

Syllable-based wrapping can cut the five-syllable Korean verb for "share" after its third syllable, leaving the polite ending alone on the next line. Each Hangul syllable block is a valid break point for a renderer, so check every narrow caption and add a manual break between words where needed.

Horizontal Korean text uses the same half-width comma and period as English, per KLREQ section 6.1.2. The full-width ideographic marks 、 and 。 belong to vertical writing, so they look foreign in a horizontal screenshot headline.

Individual words can be shorter. In the W3C article Text size in translation (opens in a new tab), the English word "views" becomes a two-syllable Korean word, a ratio of 0.8. That ratio already counts each Korean character as two English characters wide, because Hangul glyphs are much wider than Latin letters, so the Korean word is shorter even in width.

Full sentences behave differently from single words. Polite verb endings and particles add syllables, so a three-word English call to action can turn into a longer Korean phrase. Hangul syllable blocks are also dense and need enough size and line height to stay readable in a store thumbnail.

Measure the rendered caption rather than trusting a character count. The text expansion guide compares Korean with other languages.

Korean grammar encodes politeness in verb endings, and a screenshot set that switches level between slides reads as sloppy. Decide on one approach before translating and write it into the brief for your translator or reviewer.

• Formal polite endings: sound official, suit finance, health and enterprise apps.
• Informal polite endings: warmer and conversational, common for consumer products (for example, a polite "Get started").
• Noun-ending headlines (for example, a Korean phrase meaning "easy photo editing"): short, neutral, and avoid the politeness question altogether.
• Plain speech: very casual; use only if your in-app UI speaks this way.

Whatever you pick, match the tone of the Korean app UI shown inside the device frame. A formal caption above a casual interface is an obvious mismatch to Korean users.

StoreLocale offers one Korean target, code ko, listed in the language picker as 한국어. The ZIP places the PNGs in a ko folder under each platform, and you upload the same set to both consoles yourself.

• Detecting and translating on-screen strings costs 0 credits. Edit spacing or speech level in each string before you generate.
• Repainting the in-app UI with Korean text costs 1, 2 or 4 credits per screenshot for Standard (1K), Pro (2K) or Ultra (up to 4K) output.
• Brand names and acronyms such as 4K or PRO stay in Latin letters during translation.

1. Every word boundary has a space, and no particle is separated from its noun.
2. No caption breaks inside a word; wraps fall between eojeol.
3. Punctuation is half-width, and headline endings follow one rule across the set.
4. The speech level is identical on every slide and matches the app UI.
5. Repainted Hangul has no broken or invented syllable blocks, especially in small UI labels.
6. Fallback fonts render Hangul evenly next to Latin brand text, with no empty boxes.
7. Feature names match the terms in the shipped Korean build, whether they are native Korean words or transliterated loanwords.