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How to Resize Video for Social Media Free — Instagram, TikTok, YouTube

Last updated: March 2026 7 min read Video Tools

Why Resize Videos?

Every platform has preferred dimensions. Instagram feed wants 1080x1080 (square) or 1080x1350 (portrait). TikTok and Reels need 1080x1920 (9:16 vertical). YouTube is 1920x1080 (16:9 widescreen). Posting the wrong size means cropped content, black bars, or low resolution.

How to Resize Video

  1. Open the Resize Video tool
  2. Upload your video
  3. Select a platform preset or enter custom dimensions
  4. Click Resize and download the result

Platform Size Guide

Try Resize Video — free, private, unlimited.

Open Resize Video
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