About Shorts / Reels Maker
Shorts / Reels Maker — free, private, browser-based video tool
Reframe any video to a vertical 9:16, square 1:1, or 4:5 crop for Shorts, Reels, and TikTok — fills the frame, no black bars. It takes video and gives you MP4. It runs in your browser, so the file is processed on your own device.
Why use Shorts / Reels Maker
- ·Files stay on your device — nothing is uploaded
- ·No signup needed
- ·Works in any modern browser, on any OS
- ·Free daily use; Pro removes limits and watermarks
How to use it
- 1Drop a video file on the page, or click to choose one.
- 2Pick the options you want.
- 3Download the MP4 file.
What Shorts / Reels Maker does
Reframe any video to a vertical 9:16, square 1:1, or 4:5 crop for Shorts, Reels, and TikTok — fills the frame, no black bars. The result is a MP4 file you download directly.
How it works
Hybrid renderer: WebGL2 for color grading and effects, WebCodecs for decode/encode, ffmpeg.wasm for muxing and exotic codecs. Multi-threaded via SharedArrayBuffer where COOP/COEP is available. The processing code runs inside the page, so your file is not uploaded to a server — you can confirm this in your browser's DevTools → Network tab.