How to Resize Video for Reels, Shorts and TikTok

Short-video apps all use the same canvas: vertical 9:16, ideally 1080 × 1920 pixels. Upload a 16:9 landscape clip and the app either zooms in awkwardly or adds blurry bars. Prepare it yourself and you control the result.

Specs at a glance

Steps

1. Open Resize & Crop Video and choose your clip.
2. Tap the Reels / Shorts preset (9:16, 1080p, crop).
3. Choose Crop to fill the screen (sides are trimmed) or Fit to keep the whole picture with black bars.
4. Convert and upload.

Crop or fit?

Crop works when the subject is in the centre: talking heads, products, single performers. Fit is better for wide shots, slides and text where the edges matter. Add captions in the app above and below the bars.

Pro tips

• Trim to the best 15–30 seconds first. Completion rate drives reach.
• Keep text away from the bottom 20%, where app buttons cover it.
• Upload at 1080p. Uploading a 720p file makes the platform upscale it and it looks softer.