Video Resizer
Use this to repurpose a YouTube video for TikTok by going vertical, fit a widescreen film into an Instagram square, or modernise old 4:3 footage to 16:9.
Version 0.1.46 is permanently free with all 76 tools and modules. No usage quota, time limit, license key or subscription.

What it does
Use this to repurpose a YouTube video for TikTok by going vertical, fit a widescreen film into an Instagram square, or modernise old 4:3 footage to 16:9.
How to use it
- 1Drag video files into the list.
- 2Pick a Target Aspect Ratio (9:16 for TikTok, 1:1 for Instagram square, etc).
- 3Pick a Fit Strategy: Crop, Pad or Stretch.
- 4Set the Max Resolution (1080p recommended).
- 5Pick an Output Format.
- 6Click Run.
Use cases
YouTube video repurposed for TikTok
Add the video, 9:16, Crop, 1080p, MP4, run. Comes out vertical.
Widescreen film to Instagram square
Add the film, 1:1, Pad (with black bars), 1080p, run.
Modernise old 4:3 videos
Add the videos, 16:9, Pad, run.
Cinematic banner
Add the video, 21:9, Crop, run.
Frequently asked questions
Is Video Resizer free?
Yes. Version 0.1.46 is permanently free with all 76 tools and modules included. There is no usage quota or time limit, and no license key, account or subscription is required.
Local processing
Runs on your CPU/GPU. No file leaves your machine.
Batch ready
Process dozens or thousands of files in one run.
Part of BulkPro
Bundled with 76 tools across 7 modules: one install, one app.
Full UI reference, step-by-step workflows, edge cases
Every input, button, and behavior documented for advanced users.