What Languages Does Slide Buddy Support?
Short Answer
Slide Buddy supports 100+ languages via the Gemini Flash model. That includes every major world language plus most regional and minority languages with enough training data. If Google Translate or DeepL supports a language, Slide Buddy almost certainly does too.
You select the target language from Slide Buddy's sidebar. The source language is detected automatically from the deck content, so you never have to configure it.
Supported Languages (Grouped by Region)
The list below covers the major languages explicitly tested for Google Slides translation quality. Gemini Flash supports more languages than this — if yours isn't listed, try it. Odds are it works.
European Languages
Spanish, French, German, Italian, Portuguese (Brazil & Portugal), Dutch, Polish, Russian, Ukrainian, Czech, Slovak, Hungarian, Romanian, Bulgarian, Greek, Swedish, Norwegian, Danish, Finnish, Icelandic, Irish, Welsh, Catalan, Basque, Galician, Serbian, Croatian, Slovenian, Lithuanian, Latvian, Estonian, Albanian, Macedonian, Maltese, Luxembourgish.
East Asian Languages
Chinese (Simplified, Traditional, Cantonese), Japanese, Korean, Mongolian.
South & Southeast Asian Languages
Hindi, Bengali, Tamil, Telugu, Marathi, Gujarati, Punjabi, Urdu, Nepali, Sinhala, Indonesian, Malay, Thai, Vietnamese, Filipino/Tagalog, Burmese, Khmer, Lao.
Middle Eastern & Central Asian Languages
Arabic (MSA and several dialects), Hebrew, Persian/Farsi, Turkish, Azerbaijani, Kazakh, Uzbek, Kurdish, Pashto.
African Languages
Swahili, Zulu, Xhosa, Afrikaans, Amharic, Yoruba, Igbo, Hausa, Somali, Malagasy.
Americas & Pacific Languages
English (US, UK, AU), Spanish (Latin American variants), Portuguese (Brazil), Haitian Creole, Hawaiian, Maori, Samoan.
Don't see yours? Install Slide Buddy and try — Gemini Flash covers more than the list above. If translation quality is clearly wrong for your language, email feedback so it can be prioritized.
Translation Quality by Language Tier
Not all language pairs produce equal-quality output. Quality tracks with training-data volume: high-resource languages produce near-perfect translations; low-resource languages need more review. This is true of every AI translation system, not just Slide Buddy.
| Tier | Languages | Expected quality |
|---|---|---|
| Tier 1 — Excellent | Spanish, French, German, Italian, Portuguese, Dutch, Russian, Chinese (Simplified), Japanese, Korean, Arabic | 90–95% usable without edits for general content. Light review recommended for business decks. |
| Tier 2 — Very good | Polish, Turkish, Vietnamese, Indonesian, Thai, Hindi, Chinese (Traditional), Hebrew, Czech, Swedish, Norwegian, Danish, Finnish, Greek, Ukrainian, Romanian, Hungarian | 85–92% usable. Occasional awkward phrasing. Native-speaker review recommended before client-facing use. |
| Tier 3 — Good with review | Bengali, Tamil, Telugu, Marathi, Gujarati, Punjabi, Urdu, Persian, Swahili, Afrikaans, Malay, Filipino, Catalan, Serbian, Croatian, Slovak, Slovenian, Lithuanian, Latvian, Estonian, Bulgarian | 75–88% usable. Native-speaker review strongly recommended. Technical terminology especially needs verification. |
| Tier 4 — Usable, needs review | Welsh, Irish, Icelandic, Basque, Galician, Maltese, Albanian, Macedonian, Luxembourgish, Mongolian, Nepali, Sinhala, Burmese, Khmer, Lao, Amharic, Yoruba, Igbo, Hausa, Zulu, Xhosa, Somali, Malagasy, Haitian Creole, Hawaiian, Maori | Varies by content. Use for drafting, always have a native speaker review before publication. |
Tier assignments are based on general observations and benchmark data. Your mileage may vary by domain (technical, medical, legal content always needs more review — see the accuracy guide).
How Slide Buddy Handles Language
Slide Buddy uses Google's Gemini Flash model for translation. Gemini Flash is a large, multilingual model trained on a massive corpus of web, book, and document text in dozens of languages. Key behaviors:
- No pre-translation cleanup needed. The model handles mixed-language source decks (e.g., English with a few Spanish phrases) by translating the parts that match the source language and leaving the rest alone.
- Source auto-detect. You never specify source language. Slide Buddy reads the deck and figures out what it's in.
- In-place translation. Text is replaced in the same text boxes. Layout, fonts, images, charts, and tables are preserved. See the formatting preservation details.
- Language-specific scripts are handled. Latin, Cyrillic, Chinese characters, Japanese kana/kanji, Arabic, Hebrew, Devanagari, Thai, and Korean Hangul all render correctly provided the target font supports those scripts. For custom fonts, see custom font preservation.
- Bidirectional translation. English → any language, and any language → any language. You're not limited to English as the source.
FAQ
How many languages does Slide Buddy support?
100+ via Gemini Flash. Every major world language is covered, plus most regional and minority languages with enough training data.
Which languages have the best quality?
English ↔ Spanish, French, German, Italian, Portuguese, Dutch, Chinese, Japanese, Korean, Arabic. Expect 90–95% usable output for general content.
Does Slide Buddy support RTL languages like Arabic and Hebrew?
Yes, including Arabic, Hebrew, Persian, and Urdu. Google Slides' native RTL support is limited, so paragraph direction may need manual adjustment — see the RTL guide.
Can I translate into less common languages?
Yes. Welsh, Swahili, Icelandic, Maori, and many more are supported. Quality varies; native-speaker review is recommended.
Does Slide Buddy auto-detect the source language?
Yes. You pick the target language; the source is detected from deck content.
Try your language — takes 60 seconds
Install Slide Buddy, open a deck, pick your target language, click Translate. If the quality isn't what you need, nothing is saved and there's no subscription.
Install Slide Buddy — Free