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OneFileConverter
Video

Resize a video for social media

Get the right shape for every platform without a video editor.

Formats
MP4, MOV, WEBM +2
Max size
4 GB
Price
Free

Drop files here

or browse your device

MP4, MOV, WEBM, MKV, TS · up to 4.00 GB per file

Related tools

Compress VideoShrink MP4, MOV and WebM videos — or hit a target size in MB.Trim VideoCut a clip from a video by start and end time.Resize ImageChange dimensions by pixels, percent or social-media presets.

How to resize a video for social media

  1. Add your video.
  2. Choose the aspect ratio and fit.
  3. Click Resize and download.
Is my video safe?

Yes. Your video is only used to create your result — it’s never shared and never used to train AI.

Which browsers work?

Recent Chrome, Edge and Safari 17+ work best. Firefox supports most tools; if a codec isn't available we'll tell you.

Which shape should I pick?

9:16 for TikTok, Reels and Shorts; 1:1 or 4:5 for Instagram feed posts; 16:9 for YouTube and most screens.

Fill or Fit — what's the difference?

Fill covers the whole frame and trims the edges that don't fit. Fit keeps the whole picture and adds bars to fill the frame.

Will resizing reduce quality?

The video is re-encoded at the new size, so it's processed once more; at 1080 and 1920 heights the result stays sharp on phones.