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YouTubers: A/B test thumbnails and your YouTube channel to grow subscribers

2025-10-15

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Published on October 15, 2025 for YouTubers.

If you need to A/B test thumbnails YouTube videos into 25+ languages, this quick guide with inuno shows you the essentials to grow subscribers.

Why multilingual content?
Reach global audiences, boost SEO, and unlock more engagement.

Quick steps
1) Prepare clear titles & descriptions.
2) Use a reliable translator (local or cloud).
3) Keep brand terms consistent.

Tip: Start the easy way. Small improvements add up over time.

Choose your monthly plan

⭐ Starter

For small channels. Translate titles and descriptions.

Up to 300k characters

€5/month*
Subscribe now

🚀 Growth

For growing creators. More volume, same simplicity.

Up to 800k characters

€10/month*
Subscribe now

🏆 Pro

For pros and teams. High volume and priority lane.

Up to 2M characters

€20/month*
Subscribe now

*Monthly character allowance across all projects and YouTube accounts. Fair use applies. Price reflects a one-year subscription.

What customers say

“We localized 30+ videos in an afternoon. Organic views went up within a week.”

— Maya K., Creator, Travel

“Finally a simple workflow for multilingual metadata. Our CTR improved in new regions.”

— Studio Nova, Publisher

“Zero hassle: paste the video+text, pick languages, done. Huge time saver for our team.”