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Aspect Ratio Resizer
Calculate missing dimension when resizing to a specific aspect ratio. Useful for thumbnails and social media.
Frequently Asked Questions
How does it work?
Select a ratio preset and enter one dimension. The other dimension is calculated automatically.
What ratios are available?
16:9, 4:3, 1:1, 9:16, 3:2, and 21:9.
Is this useful for video thumbnails?
Yes. 16:9 is common for YouTube, 9:16 for Instagram stories and TikTok.