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TikTok Video Resizer and Cropper

Inspect, crop, and convert landscape, square, or portrait footage into a vertical 9:16 H.264 MP4 without uploading the source.

  • Conversion preflight
  • 1080p or 720p MP4
  • Local processing
Resize a video for TikTok
Choose how the source fills the vertical canvas, review its browser and output preflight, then create the final MP4 locally.
Select a video file

Choose a video to resize

MP4, MOV, or WebM up to 500 MB. Processing stays on this device.

or drop a file here

A focused vertical-video workflow

Frame the source deliberately and see the same crop contract used by the final conversion.

Control the crop
Fill the canvas, drag the subject into position, and use zoom for a tighter composition.
TikTok-focused output
Create a 1080 × 1920 or 720 × 1280 H.264 MP4 with a standard 9:16 vertical canvas.
Inspect before committing
Check source tracks, crop impact, output scaling, estimated size, and browser support before conversion starts.

Before you convert

The preflight report checks the real source tracks and selected output before conversion. Long, high-resolution, or unusually large files still require more time, memory, and battery even after their codec checks pass.

  • Keep this tab open and the device awake while processing.
  • The original file is never changed; the result is a new MP4.
  • Local processing uses your device's memory, processor, and battery.
  • A correctly formatted result does not guarantee acceptance by TikTok, whose upload requirements can change.

TikTok Video Resizer FAQs

Answers about preflight checks, local processing, output files, framing, compatibility, and conversion time.