Fix Text Overflow After Translating Google Slides
Why Translated Text Overflows in Google Slides
You translated your Google Slides deck and now half the text boxes have cut-off text or overlapping content. This isn't a bug in your translation tool — it's a fundamental property of language called text expansion (sometimes called "text swell").
Different languages use different amounts of space to express the same meaning. English is a relatively compact language. When you translate English into Spanish, the Spanish version is typically 15–25% longer. German can be 20–35% longer. Your text boxes were sized for the shorter English text, so the longer translated text overflows.
The reverse is also true: translating English into Chinese, Japanese, or Korean often shrinks the text by 10–30%, because CJK characters encode more meaning per character.
Text Expansion by Language (from English)
These are approximate ranges based on industry localization data. Actual expansion depends on content type — short UI strings expand more than paragraph text.
| Target Language | Typical Expansion | Overflow Risk |
|---|---|---|
| German | +20% to +35% | High |
| Finnish | +20% to +35% | High |
| Spanish | +15% to +25% | Medium |
| French | +15% to +25% | Medium |
| Portuguese | +15% to +25% | Medium |
| Italian | +10% to +20% | Medium |
| Russian | +10% to +20% | Medium |
| Arabic | +10% to +20% | Medium |
| Hebrew | +5% to +15% | Low |
| Chinese (Simplified) | −10% to −30% | Low (contracts) |
| Japanese | −10% to −25% | Low (contracts) |
| Korean | −5% to −15% | Low (contracts) |
How to Fix Overflow After Translation
If your slides already have overflowing text, here are three approaches ordered from fastest to most thorough:
Option 1: Enable "Shrink Text on Overflow" (Fastest)
Google Slides has a built-in setting that automatically reduces font size when text exceeds a text box:
- Right-click the overflowing text box
- Select Format options
- Under Text fitting, select Shrink text on overflow
The text will immediately shrink to fit. Repeat for each affected text box. The font size reduction is usually small (1–3pt) and barely noticeable on a projected slide.
Option 2: Resize the Text Box
Click the text box and drag the edges to make it larger. This works when you have whitespace to spare on the slide. It doesn't work well on tightly-designed slides where every element is positioned precisely.
Option 3: Edit the Translated Text
Sometimes the machine translation uses a wordy phrasing that could be shortened. If you or a colleague speak the target language, review the longest text blocks and trim unnecessary words. This gives the highest-quality result but takes the most time.
How to Prevent Overflow Before Translating
Best Practice
Enable "Shrink text on overflow" on all text boxes before translating. This way, any expansion is automatically absorbed.
Other preventive measures:
- Leave breathing room in text boxes. When designing slides, don't fill text boxes to the edge. Leave 10–20% empty space to absorb expansion.
- Use shorter source text. Concise English translates to concise everything else. Keep bullets under 15 words.
- Check the expansion table above. If translating to German or Finnish (high expansion), be extra conservative with text length. If translating to Chinese or Japanese, you'll actually have extra space.
Does Slide Buddy Handle This Automatically?
No. Slide Buddy preserves your text box sizes and does not auto-shrink text. This is a deliberate choice — automatically reducing font size can make text unreadable on projected slides, and different users have different tolerance for font size changes.
The recommended workflow: enable "Shrink text on overflow" on your text boxes before translating with Slide Buddy. This gives you the best of both worlds — automatic formatting preservation from Slide Buddy plus automatic overflow handling from Google Slides' native setting.
If you need professional-grade text-swell handling with per-element sizing rules, consider enterprise translation management systems like Smartcat or Lokalise.
FAQ
Why does my translated text overflow the text box in Google Slides?
Different languages use different amounts of space. English to Spanish adds 15–25%, German adds 20–35%. Your text boxes were sized for shorter English text. This is called "text expansion" — it's normal, not a bug.
How do I fix text overflow after translating Google Slides?
Fastest fix: right-click the text box → Format options → Text fitting → Shrink text on overflow. For prevention, enable this on all text boxes before translating.
Which languages cause the most text expansion from English?
German and Finnish expand 20–35%. Spanish, French, Portuguese expand 15–25%. Chinese, Japanese, Korean contract by 10–30%. See the full table above.
Does Slide Buddy automatically handle text overflow?
No — Slide Buddy preserves text box sizes intentionally. Enable Google Slides' "Shrink text on overflow" before translating for the best results.
Translate your slides — formatting stays intact
Slide Buddy preserves your design while translating. Pair with "Shrink text on overflow" for zero-overflow translations.
Install Slide Buddy — Free