Optimized presets for TikTok, Instagram, YouTube & X — just pick your platform.
Best experience on desktop Chrome or Edge. Some features may be limited on mobile browsers.
Drag & drop or click to select your video file. Everything is processed in your browser — nothing is uploaded to any server.
Select your target platform — TikTok, Instagram Reels, YouTube Shorts, or X (Twitter). Resolution, aspect ratio, and quality are automatically configured.
Hit "Start Conversion" and wait. Once done, you'll see a file size comparison and post eligibility check. Download your optimized video instantly.
| Platform | Aspect Ratio | Resolution | Max Size | Max Duration |
|---|---|---|---|---|
| TikTok | 9:16 | 1080x1920 | 287MB | 10 min |
| Instagram Reels | 9:16 | 1080x1920 | 250MB | 15 min |
| YouTube Shorts | 9:16 | 1080x1920 | 256MB | 3 min |
| X (Twitter) | 16:9 | 1920x1080 | 512MB | 2 min 20 sec |
No. All processing happens entirely in your browser using WebAssembly technology. Your video data never leaves your device, ensuring complete privacy.
We support the latest versions of Google Chrome, Microsoft Edge, Firefox, and Brave. Safari has limited SharedArrayBuffer support, so Chrome is recommended.
The maximum file size is 500MB due to browser memory limitations.
Yes, it's completely free. No account registration required, and there are no usage limits.
We support major video formats including MP4, WebM, AVI, MOV, and MKV. Output can be MP4 (H.264) or WebM (VP8).