Resize Video

Change a video's shape for the app you're posting to: vertical 9:16 for Reels, Stories, WhatsApp Status and Shorts, 16:9 for YouTube, square or 4:5 for feed posts. Keep the whole picture with a blurred background or black bars, or crop it to fill the frame. Everything runs in your browser, so your videos are never uploaded.

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Features

  • Presets for 9:16, 16:9, 1:1 and 4:5

  • Three ways to fit: blurred background, black bars, or crop to fill

  • 720p or 1080p output

  • H.264 MP4 that Instagram, WhatsApp, YouTube and Facebook all accept

  • Phone videos are turned the right way up automatically

  • Several videos at once, with a Download All (ZIP) button

  • Runs in your browser: nothing is uploaded. Free, no signup, no watermark

When people use it

A landscape video as a Reel or Status

Post the whole video in a vertical frame without Instagram or WhatsApp cutting off the sides.

A vertical phone video for YouTube

Put a portrait clip in a 16:9 frame with a blurred background instead of black bars.

Square or 4:5 feed posts

Make a video fill the feed space on Instagram and Facebook.

Resizing a video for social apps

Which shape does each app use?

  • 9:16 vertical: Instagram Reels and Stories, WhatsApp Status, YouTube Shorts, TikTok, Facebook Stories.
  • 16:9 landscape: YouTube, Facebook videos, TVs, laptops and presentations.
  • 1:1 square: Instagram and Facebook feed posts.
  • 4:5 portrait: an Instagram feed post that takes up the most space on screen.

Blurred background, black bars or crop?

When the video's shape doesn't match the frame, something has to fill the gap or something has to be cut. A blurred background fills the empty space with a soft, enlarged copy of the video, which is what most creators use. Black bars keep it plain. Crop to fill zooms in until the frame is full and cuts off what doesn't fit, which works when the important part is in the middle.

720p or 1080p?

1080p is sharper and is what Instagram and YouTube recommend. 720p is quicker to make in a browser, gives a smaller file, and looks fine on WhatsApp Status, which compresses videos anyway.

Want to do more with the video?

Large files and browser memory

The video is re-encoded in your browser, which takes about as long as it plays on a computer, and longer on a phone. Very long or 4K videos can run out of browser memory. If one fails, close other tabs or try it on a computer.

Resize Video - FAQ