Resize Video changes a clip's dimensions to an exact resolution or a ready-made social-media preset — square for Instagram, vertical for Stories and Reels, widescreen for YouTube. Choose how the frame should fit and export a perfectly sized video without uploading it anywhere.
Drop the file in; its source resolution is detected automatically.
Pick a preset like 1080p, Square or Vertical, or type a custom width and height.
Choose Fit, Fill or Stretch, then export your resized clip.
Fit letterboxes the whole frame inside your size; Fill crops the edges to cover it completely; Stretch distorts to the exact dimensions.
Use Square (1:1) for a feed post and Vertical (9:16) for Stories, Reels and TikTok.
Yes — enter any width and height and the tool renders your video at exactly that size.
No. This tool runs entirely in your browser — your file is processed on your own device and never leaves it. The only network request is an anonymous usage counter.