Why ReactionMaker?
Unlike heavy desktop editors, ReactionMaker runs entirely in your browser. No installation. No account required. Everything processes locally.
- No watermark
- No login required
- Works on desktop and mobile
- Optimized for YouTube Shorts, TikTok and Instagram
- Free split screen creation
How It Works
- Tap the top half to add your main video.
- Tap the bottom half to add your reaction video.
- Choose a creator layout preset.
- Add optional text.
- Export your final 9:16 reaction video.