Change the aspect ratio
Fit your videos to every social network.
16:9 for YouTube, 9:16 for TikTok and Reels, 1:1 or 4:5 for Instagram: crop or add bars.
16:9
YouTube
9:16
TikTok
1:1
Instagram
4:5
Portrait
Fast and simpleA result in a few clicks.
6 formats16:9, 9:16, 1:1, 4:5, 4:3, 21:9.
3 ways to fillCrop, bars, blurred background.
Local processingYour videos stay on your device.
Change the aspect ratio in seconds
Three simple steps, no installation.1ImportAdd your videos from your device.
2Choose the formatFormat and how to fill the frame.
3DownloadGet your files, as a ZIP if needed.
Everything you need with “Change the aspect ratio”
16:9
16:9
YouTube, television.
9:16
9:16
TikTok, Reels, Shorts.
1:1
1:1
Square posts.
4:5
4:5
Instagram portrait.
▒▒
Blurred background
No black bars.
◎
Centered crop
The subject stays in the middle.
Built for your videos
See all toolsreel-9x16.mp4
TikTok and Reels
Switch to vertical format
post-1x1.mp4
Instagram
A square or a 4:5
video-16x9.mp4
YouTube
Switch back to 16:9
clip-4x3.mp4
Slideshows
Make several videos consistent
Your videos belong to youYour videos stay on your device: nothing is sent, everything stays private. Processing takes about as long as the video: keep the tab open.
Simple. Private. Reliable.Use “Change the aspect ratio” with complete peace of mind.
FitOther video tools
See all tools →Compress a videoReduce a video’s file sizeCut a videoKeep only the part you needRotate a videoPut a video back the right way upChange the resolution1080p, 720p, 480p…Crop a videoRemove unwanted edgesChange the speedSpeed up or slow downAdd a watermarkYour name or logo on the videoAdd textTitle or caption during a segment
Frequently asked questions
Are my videos sent to a server?
No. “Change the aspect ratio” processes your files directly in your browser: they stay on your device.
Is there a size limit?
The limit mostly depends on your device’s memory. Typical videos (a few hundred MB) work fine; processing takes about as long as the video itself.
Do I need to create an account?
No. The tool is usable right away. A free account is only useful to find your history again.
WHAT MAKES THE DIFFERENCE
100 %
In the browser
24
Video tools
0
Files sent
0 €
No sign-up