Aspect Ratio & Resize: 34 free online tools from ShortsHero. Change 16:9 to 9:16, add or remove bars, resize for every platform. Each one runs on its own page with no watermark — start with 16:9 to 1:1 Video Converter, 1:1 to 16:9 Video Converter, 9:16 to 1:1 Video Converter.
landscape in, square out
square in, landscape out
vertical in, square out
square in, vertical out
landscape in, portrait 4:5 out
portrait 4:5 in, landscape out
vertical in, portrait 4:5 out
portrait 4:5 in, vertical out
square in, portrait 4:5 out
portrait 4:5 in, square out
4:3 classic in, landscape out
landscape in, 4:3 classic out
4:3 classic in, vertical out
ultrawide in, landscape out
ultrawide in, vertical out
3:4 portrait in, vertical out
2:3 portrait in, vertical out
3:2 photo in, landscape out
Any ratio to any ratio
Auto-detect and crop the borders
Fit any ratio without cropping
The 2.39:1 movie look
1080p, 720p, 4K and custom
Smaller files, same look
Lighter files for slow uploads
The right size for Facebook (1:1, 4:5 or 9:16)
The right size for X (Twitter) (16:9 or 1:1)
The right size for Pinterest (2:3 or 9:16)
The right size for Snapchat (9:16)
The right size for WhatsApp Status (9:16)
The right size for YouTube (16:9)
The right size for Threads (9:16 or 4:5)
The right size for Instagram Story (9:16)
The right size for Bluesky (16:9 or 9:16)