Video Resizer
Last updated: June 1, 2026In-browserCrop video for Reels, TikTok, Shorts & square.
Video Resizer is a free online tool to crop video for Reels, TikTok, Shorts & square. It runs entirely in your browser, so your files never leave your device — nothing is uploaded. There's no sign-up, no watermark, and it works on any modern browser on desktop or mobile.
How to use Video Resizer
The Video Resizer crops and resizes video to the perfect aspect ratio for Instagram Reels, TikTok, YouTube Shorts, square or portrait — in one click, in your browser. It reframes your footage to vertical 9:16, square 1:1 and more so it fills the screen on every platform. No upload, no watermark.
Read the full guide: How to Resize a Video for Reels, TikTok & YouTube
- 1Drop in your video.
- 2Pick a target ratio (9:16 Reels/TikTok/Shorts, 1:1 square, 4:5 portrait or 16:9).
- 3Export and download the resized, reframed video.
Made for social
One-click presets for Reels, TikTok, Shorts, square and portrait so your video fits each feed.
Fill the screen
Crop to vertical or square so there are no ugly black bars on mobile.
Private and watermark-free
Reframing runs on your device with a clean output.
Reframe a landscape clip for Reels
Shot your video horizontally but need it vertical for Reels, TikTok or Shorts? Pick the 9:16 preset and the tool scales your footage to fill a 1080x1920 frame, then center-crops it so the action stays in shot with zero black bars. It re-encodes to a clean MP4, so the result drops straight into the upload screen without stretching or distortion.
Make one square video for the feed
Instagram and Facebook feed posts look sharpest at 1:1. Choose the square preset to crop any clip to an even 1080x1080 frame centered on your subject. There's no stretching, just a tidy MP4 that fills the in-feed player edge to edge on phones. Handy when a vertical or wide clip is getting awkwardly letterboxed in the grid preview.
Resize portrait video to 4:5
The 4:5 ratio (1080x1350) is the tallest shape Instagram allows in the feed, so your post claims more vertical screen space than a square without being cut to a full Reel. Select the 4:5 preset to crop your footage to those exact dimensions, keeping the center framed. Export the reframed MP4 and it slots into a feed carousel or single post cleanly.
Video Resizer — frequently asked questions
How do I make a video vertical for Reels or TikTok?
Drop in the video, choose the 9:16 preset, and export — the tool crops it to full-screen vertical.
Which aspect ratio should I use?
9:16 for Reels, TikTok and Shorts; 1:1 for square feed posts; 4:5 for portrait; 16:9 for YouTube and landscape.
Will it stretch my video?
No — it crops to the target ratio so the footage isn't distorted.
Is it free with no watermark?
Yes, completely free and watermark-free.
Are my videos uploaded?
No, the resize runs entirely in your browser.
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