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Private browser utility / Social & Creator

Vertical Video Cropper

Runs entirely in your browser - no upload, no sign-up.

Live workspaceLocal processing
Choose a video and pick a vertical format

Your source and converted video stay in this browser tab. The video is never uploaded.

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vertical clip cropper / browser utility
01 / Overview

How do you make a video vertical?

Choose a local video, pick 9:16, 4:5, or 1:1, and export a new MP4. Crop mode fills the frame by cutting the edges, while pad mode fits the whole picture with a blurred or black background. Everything runs in your browser, so your video is never uploaded.

02

How to use

  1. 01
    Choose a video

    Drop an MP4, WebM, MOV, MKV, AVI, MPEG, or another common video file into the cropper.

  2. 02
    Pick a vertical format

    Choose 9:16 for Shorts, Reels, and TikTok, 4:5 for portrait posts, or 1:1 for square grids.

  3. 03
    Choose how it fits

    Crop fills the frame by cutting the edges. Pad fits the whole video and fills the rest with a blurred or black background.

  4. 04
    Export and download

    Start the local export, keep this tab open while the video is re-encoded, then download the MP4.

03

Who it's for

  • Short-form creators can turn a landscape recording into a 9:16 clip for Shorts, Reels, or TikTok without re-filming.
  • Social media managers can prepare one source video for a vertical feed and a square grid post.
  • Course and webinar hosts can reframe a widescreen recording for a portrait-friendly mobile audience.
  • Small businesses can make product videos fit a platform's preferred frame before publishing.

This vertical clip cropper reframes any video for portrait feeds. It does not trim the timeline or change the speed. Choose 9:16 for Shorts, Reels, and TikTok, 4:5 for portrait feed posts, or 1:1 for square grids. Crop mode keeps the center of the picture and cuts the sides, while pad mode fits the full frame and fills the leftover space with a blurred copy or solid black.

The tool loads a WebAssembly build of FFmpeg only when you export. It re-encodes the video as H.264 MP4 and keeps the first audio track as AAC when one exists. The longest output side is capped at 1920 pixels, which keeps portrait exports within the sizes most platforms expect. Browser memory and processor speed make the tool best for short or moderate clips.

FAQ

Is my video uploaded when I make it vertical?

No. The browser reads your selected file and a WebAssembly video engine creates the result in this tab. The engine code downloads when first needed, but your source video and the vertical result are not sent to CanDoYa or stored in an account.

What is the difference between crop and pad mode?

Crop mode fills the 9:16, 4:5, or 1:1 frame by cutting the sides of a landscape video, so the picture is larger but edges are lost. Pad mode fits the whole video inside the frame and fills the leftover space with a blurred copy or solid black, so nothing is cut.

Which aspect ratio should I use for Shorts, Reels, and TikTok?

All three platforms prefer 9:16 vertical video. Use 4:5 for portrait feed posts that show more of the frame, and 1:1 for square grids. You can export the same source in each ratio and compare.

Will the vertical video keep its quality?

The exporter re-encodes the picture as H.264 and caps the longest side at 1920 pixels, which matches what most platforms expect. The result is a new MP4, so quality depends on the source and the re-encode, not on a server-side compression tier.

Does making a video vertical shorten it?

No. Reframing changes the visible frame but keeps the full timeline and the audio. To remove time from the beginning, middle, or end, use a video trimmer instead.

Will the vertical video keep its audio?

Yes, when the source has a readable audio track. The exporter reframes and re-encodes the picture, then places the first audio stream into the MP4 as AAC. Sources without audio remain silent.

Why can converting a large video take several minutes?

Every frame must be decoded and encoded again on your device. Long duration, 4K dimensions, an uncommon source codec, and limited memory all increase processing time. Keep the tab open and close other heavy tabs.