Translate All Google Slides at Once — One Command, Every Slide
There's no native "translate all" button in Google Slides. The built-in option handles one text box at a time, and most add-ons still process slides sequentially. But there's a free tool that does what you actually want: type one command and have every slide translated simultaneously — in about 7 seconds for a 10-slide deck.
Why Translating Slides One by One Doesn't Scale
Translating slides one by one breaks down fast. Even if each slide takes just 10 seconds — select text, trigger translate, confirm — a 20-slide deck is already over three minutes of repetitive clicking. Add speaker notes, multiple languages, or regular updates, and you're looking at a genuine time sink every time content changes.
The root cause: most tools make one translation API call per slide. Each call is sent, waits for a response, then moves to the next. It's sequential by design.
Slide Buddy takes a different approach. It packages all slides into a single call to Gemini AI and gets all translations back in one response — then writes everything simultaneously. The result is a flat time cost that barely grows with deck size.
| Method | 5 slides | 20 slides | 50 slides |
|---|---|---|---|
| Manual (built-in Google Translate) | ~2 min | ~8 min | ~20 min |
| Sequential add-on (slide by slide) | ~15 sec | ~60 sec | ~2.5 min |
| Slide Buddy (all at once) | ~5 sec | ~12 sec | ~35 sec |
How to Translate All Slides at Once
What you need: Slide Buddy — a free Google Workspace add-on. No account, no quota, no payment.
Install Slide Buddy from the Marketplace
In Google Slides: Extensions → Add-ons → Get add-ons → search "Slide Buddy" → Install. Takes under a minute. Full install guide →
Open the sidebar
Extensions → Slide Buddy → Open. A chat-style panel appears on the right side of your presentation.
Type your "translate all" command
No dropdown, no menus. Just type what you want in plain English and press Enter.
All slides translated — simultaneously
Every text frame across every slide is updated in place. Fonts, colors, layout, images — untouched.
Command Examples
Slide Buddy understands plain English. Here are commands that translate all slides at once:
Who Uses "Translate All Slides at Once"
The "all at once" capability matters most when volume is high or the deck changes often. The three biggest groups:
Teachers
Preparing lesson slides for multilingual classrooms. Translating a 30-slide unit takes under 30 seconds instead of 15+ minutes. See our classroom guide.
Business Teams
Localizing sales decks, pitch decks, and training materials for international offices. Need the deck in 4 languages before Monday's call? That's four translate-all commands.
NGOs & Nonprofits
Field teams working across language regions often inherit English decks and need local versions fast. Slide Buddy removes the translation bottleneck entirely.
FAQ
How do I translate all slides in Google Slides at once?
Install Slide Buddy, open it from Extensions → Slide Buddy → Open, then type "Translate all slides to [language]". Every slide is processed simultaneously — no clicking through them one by one.
Can Google Slides translate all slides at the same time?
Not natively — Google Slides' built-in translate works only on selected text in a single box. For all-at-once translation, you need a third-party add-on. Slide Buddy is the free option that does this in a single batch.
Is there a shortcut to translate all Google Slides?
With Slide Buddy, typing "Translate all slides to [language]" in the sidebar is the closest equivalent to a one-click shortcut. No multi-step workflow, no slide-by-slide confirmation.
How long does it take to translate all slides at once?
About 7 seconds for a 10-slide deck, ~12 seconds for 20 slides, ~35 seconds for 50 slides. Because all slides are batched, the time barely scales with slide count.
Related Guides
How to Translate an Entire Google Slides Deck at Once
In-depth guide including speaker notes and formatting.
Bulk Translate Google Slides: Into Multiple Languages at Once
Need 5 language versions? Here's the workflow.
How to Translate Google Slides to Another Language
Every method compared.
Translate Google Slides for the Classroom
For teachers with multilingual students.