ローカライズレポート

Twitch

Livestreaming platform

twitch.tv

製品: Twitch is an interactive livestreaming service for content spanning gaming, entertainment, sports, music, and more. Users can browse live channels and watch creators across a range of categories.

ブランドボイス: interactive, energetic, community-focused

ローカライズスコア

79/100

良好

ウェブサイトは概ね適切にローカライズされていますが、改善すべき点もあります。

83技術監査
66言語監査
92コンテキスト監査
75ビジュアル監査

監査日: 2026/08/15範囲: 公開スマートサンプル · 技術・言語・文脈・ビジュアルの各クレジット信頼度: サンプルページに基づく参考用のヘルスチェック — サイト全体をクロールしたものではありません。

技術面、言語面、文脈面、視覚面の各ローカライズ評価項目にわたり、15 ページをサンプリングしました。ローカライゼーション監査の評価方法

他の人との比較

公開監査23件中#3位

Ahead of 17 other public audits公開平均: 70/100

リーダーボード全体を見る

最初に修正する項目

1
high
Untranslated call to action
A cs-cz page still uses source-language CTA copy. Affects 10 sampled pages.
See details
2
high
Page script does not match the locale
A el-gr page is dominated by Latin-script copy.
See details
3
high
No CJK-capable font detected
A ja-jp page shows CJK text but the embedded/inline font stack has no known CJK typeface. Affects 2 sampled pages.
See details

監査基準

15 passed · 9 to watch · 7 to fix · 4 not applicable

要対応 (7)

Sitemap
不合格60技術的
Like Lighthouse: a valid XML sitemap must be discoverable, robots.txt should reference it with an absolute Sitemap: URL, and localized URLs should appear for published locales.
- mediumtechnical · 90% の確信度
  Sitemap is missing localized URLs
  A sitemap was found, but sampled entries do not include locale-prefixed URLs.
  こちらで見つかりました
  Sitemap · sitemap.xml
  https://www.twitch.tv/sitemapv2_index.xml.gz
  確認されたこと
  Sitemap https://www.twitch.tv/sitemapv2_index.xml.gz has no locale-prefixed URLs in the sample
  修正方法
  Include localized URLs in the sitemap for every published locale.
Structured data
不合格0技術的
JSON-LD inLanguage should match the page locale when structured data is present.
- lowtechnical · 95% の確信度
  Structured data omits inLanguage
  JSON-LD is present but does not declare inLanguage on sampled pages.
  こちらで見つかりました
  JSON-LD · <script type="application/ld+json">
  https://www.twitch.tv/
  確認されたこと
  Organization is present but inLanguage is missing
  修正方法
  Set JSON-LD inLanguage to match each page locale.
Translation completeness
不合格0言語
Localized pages should not leave source-language copy in place, except brand names and URLs.
- highlinguistic · 92% の確信度
  Untranslated call to action
  A cs-cz page still uses source-language CTA copy. Affects 10 sampled pages.
  こちらで見つかりました
  Pricing hero · <button>
  https://www.twitch.tv/?lang=cs
  確認されたこと
  Primary CTA: "[DROPS] TARKOV SEASONAL | TEACHING TIMTHETATMAN & NICKMERCS | THE MASTERCLASS | FREAK BOB FRIDAY | #BUNGULATE" Seen on 10 pages, e.g. https://www.twitch.tv/?lang=cs, https://www.twitch.tv/?lang=da, https://www.twitch.tv/?lang=de
  修正方法
  Translate leftover source-language CTAs to match the surrounding locale copy.
- highlinguistic · 95% の確信度
  Page script does not match the locale
  A el-gr page is dominated by Latin-script copy.
  こちらで見つかりました
  Page body · sampled copy
  https://www.twitch.tv/?lang=el
  確認されたこと
  Μετάβαση σε... Alt P Περιήγηση 37 Σύνδεση Εγγραφή Κανάλια σε ζωντανή μετάδοση Lacy Call of Duty: Black Ops II Ζωντανά 17,3 χιλ. 17,3 χιλ. θεατές Χρησιμοποίησε το δεξί βελάκι για να δεις περισσότερες πληροφορίες. TheBurntPeanut Escape from Tarkov Ζωντανά 62,1 χιλ. 62,1 χιλ. θεατές…
  修正方法
  Write this el-gr page in the expected script instead of leftover Latin-script copy.
Terminology consistency
不合格40言語
Important concepts should not be translated differently across pages.
- mediumlinguistic · 95% の確信度
  Terminology inconsistency
  "Just Chatting" appears both untranslated and translated across de pages. Affects 6 sampled pages.
  こちらで見つかりました
  Header · <nav> or <button>
  https://www.twitch.tv/?lang=de
  確認されたこと
  "Just Chatting" appears untranslated on some de pages and translated on others Seen on 3 pages, e.g. https://www.twitch.tv/?lang=de, https://www.twitch.tv/?lang=ja, https://www.twitch.tv/?lang=ko
  修正方法
  Use one translated label for "Just Chatting" across de pages.
Text expansion
不合格40視覚的
Longer translations should not create obvious length pressure versus the source UI.
- mediumvisual · 88% の確信度
  Localized text is much longer than the source
  A bg string is 330% the length of the source, which often causes overflow. Affects 39 sampled pages.
  こちらで見つかりました
  Control · <button>
  https://www.twitch.tv/?lang=bg
  確認されたこと
  EN "⭐ CINNATHON DAY 14 ⭐" → BG "🧀LIVE🧀HERE🧀LOCKIN🧀DRAMA🧀NEWS🧀VIDEOS🧀GAMES🧀REACTS🧀THINGS🧀" (330%) Seen on 14 pages, e.g. https://www.twitch.tv/?lang=bg, https://www.twitch.tv/?lang=cs, https://www.twitch.tv/?lang=da
  修正方法
  Shorten the translation or give the control more room so the longer copy does not overflow.
Font and script support
不合格62視覚的
Typography should support the target script without generic fallback-only stacks, tofu glyphs, or missing CJK fonts.
- highvisual · 95% の確信度
  No CJK-capable font detected
  A ja-jp page shows CJK text but the embedded/inline font stack has no known CJK typeface. Affects 2 sampled pages.
  こちらで見つかりました
  Page body · font-family
  https://www.twitch.tv/?lang=ja
  確認されたこと
  font-family: var(--font-body) Seen on 2 pages, e.g. https://www.twitch.tv/?lang=ja, https://www.twitch.tv/?lang=ko
  修正方法
  Include a CJK font such as Noto Sans CJK, Malgun Gothic, Hiragino, or PingFang in the stack.
Localized images and assets
不合格58視覚的
Language-specific images and alt text should match the page locale.
- mediumvisual · 95% の確信度
  Image still looks like the source locale
  Alt text or filename on a ja-jp page appears to be English. Affects 8 sampled pages.
  こちらで見つかりました
  Page body · <img alt>
  https://www.twitch.tv/?lang=ja
  確認されたこと
  alt="[DROPS] TARKOV SEASONAL | TEACHING TIMTHETATMAN & NICKMERCS | THE MASTERCLASS | FREAK BOB FRIDAY | #BUNGULATE" src="https://static-cdn.jtvnw.net/previews-ttv/live_user_theburntpeanut-640x360.jpg" Seen on 2 pages, e.g. https://www.twitch.tv/?lang=ja, https://www.twitch.tv/?la…
  修正方法
  Localize the image asset and alt text for this page locale.

Worth a look (9)

Accessibility localisation
Watch84技術的
lang, aria-label, and alt text should match the page locale.
- mediumtechnical · 95% の確信度
  Accessible names look untranslated
  aria-label or alt text on a bg-bg page still looks English.
  こちらで見つかりました
  Accessible name · [aria-label]
  https://www.twitch.tv/?lang=bg
  確認されたこと
  theburntpeanut (проверено) стрийминг [DROPS] TARKOV SEASONAL | TEACHING TIMTHETATMAN & NICKMERCS | THE MASTERCLASS | FREAK BOB FRIDAY | #BUNGULATE
  修正方法
  Translate accessible names together with the visible UI.
- infotechnical · 82% の確信度
  Document language matches the selected locale
  The inspected pages expose locale-appropriate htmlLang values for English, Bulgarian, and Czech.
  こちらで見つかりました
  Document metadata · <html>
  https://www.twitch.tv/
  確認されたこと
  "htmlLang":"en-US"; "url":"https://www.twitch.tv/?lang=bg" with "htmlLang":"bg-BG"; "url":"https://www.twitch.tv/?lang=cs" with "htmlLang":"cs-CZ"
- lowtechnical · 82% の確信度
  ARIA and alt-text coverage is not verifiable
  The provided evidence lists buttons and visible text but does not include aria-label or image alt-text markup.
  こちらで見つかりました
  Interactive controls and media · <button>, <img>
  https://www.twitch.tv/
  確認されたこと
  The preview includes a "buttons" array and "headings" array, but no aria-label or alt attributes.
  修正方法
  Audit localized aria-label and alt attributes in every locale. Ensure accessible names are translated consistently with the visible UI.
Fluency
Watch88言語
Copy should sound natural, without grammar issues or machine-translation artifacts.
- infolinguistic · 76% の確信度
  Localized UI reads as natural in sampled locales
  The sampled Bulgarian and Czech interface strings use coherent, locale-specific wording rather than leaving core navigation in English.
  こちらで見つかりました
  Header and page headings · <button>, <h2>
  https://www.twitch.tv/
  確認されたこと
  Bulgarian: "Пропуснете към...", "Влизане", "Канали на живо", "Просто чат"; Czech: "Přeskočit na...", "Přihlásit se", "Živé kanály"
- lowlinguistic · 76% の確信度
  Dynamic promotional content remains mixed-language
  Localized pages include English stream and promotional titles, though the evidence does not establish whether these are user-generated or platform-controlled strings.
  こちらで見つかりました
  Live content cards · <a>
  https://www.twitch.tv/?lang=bg
  確認されたこと
  The Bulgarian page includes "TheBurntPeanut Escape from Tarkov" and a promotional button reading "[DROPS] TARKOV SEASONAL | TEACHING TIMTHETATMAN & NICKMERCS..."
  修正方法
  Separate user-generated channel content from translatable platform copy, and localize platform-controlled promotional text where appropriate.
Brand voice
Watch86言語
Localized copy should preserve the intended tone of the source.
- infolinguistic · 74% の確信度
  Energetic platform tone is preserved
  The sampled content retains Twitch’s live, promotional tone through terms such as live channels, viewer counts, Hype Train, and promotional stream titles.
  こちらで見つかりました
  Live content and promotional cards · <h2>, <button>
  https://www.twitch.tv/
  確認されたこと
  "Live Channels", "Hype Train • Level 3", "⭐ CINNATHON DAY 14 ⭐" and Bulgarian "Канали на живо"
Grammar and style
Watch89言語
Locale-specific capitalization, punctuation, formality, and agreement should be correct.
- infolinguistic · 76% の確信度
  Sampled locale capitalization and punctuation are consistent
  The Bulgarian and Czech samples show readable UI capitalization and punctuation appropriate to short navigation labels and headings.
  こちらで見つかりました
  Header and headings · <button>, <h2>
  https://www.twitch.tv/
  確認されたこと
  Bulgarian: "Пропуснете към... Alt P" and "Категории, които смятаме, че ще ви харесат"; Czech: "Přeskočit na...AltP" and "Přihlásit se"
Visual hierarchy
Watch86視覚的
Localization should not make headings or CTAs lose scanability.
- infovisual · 68% の確信度
  Localized headings and CTAs remain identifiable in the extracted structure
  The evidence shows clear heading groups and distinct authentication actions in each sampled locale; screenshot-based visual verification is unavailable.
  こちらで見つかりました
  Homepage header and content sections · <h2>, <button>
  https://www.twitch.tv/
  確認されたこと
  English headings include "Live Channels" and "Categories we think you’ll like"; Bulgarian headings include "Канали на живо" and "Категории, които смятаме, че ще ви харесат".
  修正方法
  Verify localized heading wrapping and CTA prominence at representative viewport sizes with screenshots.
Component consistency
Watch87視覚的
Repeated components should stay visually consistent across locales.
- infovisual · 66% の確信度
  Repeated page components appear structurally consistent
  The sampled locale records expose the same broad component types—buttons, headings, live channel cards, and viewer counts—across English, Bulgarian, and Czech.
  こちらで見つかりました
  Homepage component structure · <button>, <h2>, <article>
  https://www.twitch.tv/
  確認されたこと
  Each sampled page record contains "buttons", "headings", and live-channel text, including the corresponding localized authentication and heading strings.
  修正方法
  Run screenshot comparisons across locales to confirm that typography, spacing, and component states remain visually identical.
Text overflow
Watch84視覚的
Text should not clip, truncate unexpectedly, or overflow buttons and navigation.
- infovisual · 62% の確信度
  No overflow is demonstrable from the provided extraction
  The evidence contains long localized headings and controls but no screenshot, bounding-box, or clipping data, so overflow risk can only be estimated.
  こちらで見つかりました
  Header and homepage headings · <button>, <h2>
  https://www.twitch.tv/
  確認されたこと
  Bulgarian heading: "Категории, които смятаме, че ще ви харесат"; Czech promotional button: "Hlavní vysílání: RERUN: CS2 at EWC 26 - Day 3 - Group Stage - Stream A"
  修正方法
  Test long translated labels at narrow widths and allow buttons and headings to wrap without clipping.
Layout breakage
Watch84視覚的
Localized pages should not overlap, break grids, or overflow modals.
- infovisual · 60% の確信度
  Layout integrity cannot be confirmed from text-only evidence
  The extracted pages show localized content successfully returned with status 200, but provide no visual or geometry evidence for overlap, grid breaks, or modal overflow.
  こちらで見つかりました
  Homepage layout · <main>
  https://www.twitch.tv/
  確認されたこと
  The sampled locale records show "status":200 and populated "buttons" and "headings" arrays, but no layout measurements or screenshots.
  修正方法
  Compare localized pages at desktop and mobile widths, checking navigation, cards, headings, and overlays for overlap or clipping.
Responsive localisation
Watch83視覚的
Localized layouts should hold up across mobile, tablet, and desktop widths.
- infovisual · 58% の確信度
  Responsive behavior is not directly evidenced
  The locale extraction confirms content rendering but contains no viewport-specific screenshots or responsive layout measurements.
  こちらで見つかりました
  Homepage responsive layout · <body>
  https://www.twitch.tv/
  確認されたこと
  The evidence lists locale pages, status, headings, buttons, and text, but does not include viewport dimensions or responsive screenshots.
  修正方法
  Test every representative locale at mobile, tablet, and desktop widths, especially long headings, navigation labels, and live-card metadata.

合格した監査項目 (15)

該当なし（4）

Other findings

Findings not listed under a criterion above.

lowvisual · 72% の確信度
No Korean word-break rule found in sampled CSS
Embedded CSS was found, but it does not declare word-break: keep-all for Hangul.
こちらで見つかりました
CSS · word-break
https://www.twitch.tv/?lang=ko
確認されたこと
Sampled <style>/inline CSS declares fonts but no word-break: keep-all
修正方法
Add word-break: keep-all for Korean text containers.
infotechnical · 93% の確信度
Locale navigation is available
The evidence shows the same Twitch page loading successfully with locale query parameters across 26 listed locales.
こちらで見つかりました
Page navigation · <html>
https://www.twitch.tv/
確認されたこと
"locales":["bg-bg","cs-cz","da-dk","de-de","el-gr","en-us","es-es","es-mx","fi-fi","fr-fr","hu-hu","it-it","ja-jp","ko-kr","nl-nl","no","pl","pt-br","ro","ru","sk","sv","th","tr","vi","zh-cn","zh-tw"] and "url":"https://www.twitch.tv/?lang=bg"
infolinguistic · 78% の確信度
Core navigation and headings are translated
The localized Bulgarian and Czech pages provide translations for key actions and page headings while preserving the Twitch page structure.
こちらで見つかりました
Header and content navigation · <button>, <h2>
https://www.twitch.tv/
確認されたこと
English: "Log In", "Sign Up", "Live Channels"; Bulgarian: "Влизане", "Регистриране", "Канали на живо"; Czech: "Přihlásit se", "Zaregistrovat", "Hlavní vysílání"
infocontextual · 88% の確信度
Authentication CTAs preserve their intended actions
The localized labels clearly communicate login and account-registration actions in the sampled locales.
こちらで見つかりました
Header · <button>
https://www.twitch.tv/
確認されたこと
English: "Log In", "Sign Up"; Bulgarian: "Влизане", "Регистриране"; Czech: "Přihlásit se", "Zaregistrovat"
infocontextual · 82% の確信度
Viewer counts use locale-aware formatting
The Bulgarian page formats viewer counts differently from the English page, indicating adaptation of numeric presentation to the selected locale.
こちらで見つかりました
Live channel cards · <span>
https://www.twitch.tv/
確認されたこと
English: "62.1K viewers"; Bulgarian: "62,1 хил." and "17,3 хил. зрители"
infocontextual · 86% の確信度
Translations fit their UI components
Short action labels appear on buttons, while longer translated strings appear as section headings and instructional text.
こちらで見つかりました
Header and content sections · <button>, <h2>, <p>
https://www.twitch.tv/
確認されたこと
Buttons include Bulgarian "Влизане" and "Регистриране"; headings include "Канали на живо" and "Категории, които смятаме, че ще ви харесат".
infocontextual · 84% の確信度
Core Twitch concepts remain recognizable across locales
Localized pages preserve product concepts such as live channels, viewers, Hype Train, categories, and authentication.
こちらで見つかりました
Homepage · <h2>, <button>, <span>
https://www.twitch.tv/
確認されたこと
The evidence includes "Live Channels", "Live on Twitch", "Hype Train • Level 3", "Log In", and corresponding Bulgarian strings such as "Канали на живо", "На живо в Twitch", and "Влизане".
infocontextual · 80% の確信度
Strings are translated in page context
The sampled translations preserve distinctions between navigation, authentication, headings, live status, and viewer-count content.
こちらで見つかりました
Homepage navigation and live feed · <button>, <h2>, <span>
https://www.twitch.tv/?lang=bg
確認されたこと
Bulgarian separates "Влизане", "Регистриране", "Канали на живо", "На живо в Twitch", and "Просто чат" across the corresponding English UI concepts.
infocontextual · 82% の確信度
Copy fits a consumer live-streaming audience
The sampled interface uses direct, action-oriented language and streaming-specific terminology appropriate for viewers and account holders.
こちらで見つかりました
Homepage header and live feed · <button>, <h2>
https://www.twitch.tv/
確認されたこと
"Browse 37", "Log In", "Sign Up", "Live Channels", "62.1K viewers" and Bulgarian equivalents such as "Преглед 37", "Влизане", and "Канали на живо"

検出されたロケール

ブルガリア語 (ブルガリア)
bg-bg · page language
チェコ語 (チェコ)
cs-cz · page language
デンマーク語 (デンマーク)
da-dk · page language
ドイツ語 (ドイツ)
de-de · page language
ギリシャ語 (ギリシャ)
el-gr · page language
アメリカ英語
en-us · page language
スペイン語 (イベリア半島)
es-es · page language
スペイン語 (メキシコ)
es-mx · hreflang
フィンランド語 (フィンランド)
fi-fi · page language
フランス語 (フランス)
fr-fr · page language
ハンガリー語 (ハンガリー)
hu-hu · page language
イタリア語 (イタリア)
it-it · page language
日本語 (日本)
ja-jp · page language
韓国語 (韓国)
ko-kr · page language
オランダ語 (オランダ)
nl-nl · page language
ノルウェー語
no · hreflang
ポーランド語
pl · hreflang
ポルトガル語 (ブラジル)
pt-br · hreflang
ルーマニア語
ro · hreflang
ロシア語
ru · hreflang
スロバキア語
sk · hreflang
スウェーデン語
sv · hreflang
タイ語
th · hreflang
トルコ語
tr · hreflang
ベトナム語
vi · hreflang
中国語 (中国)
zh-cn · hreflang
中国語 (台湾)
zh-tw · hreflang

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