ReactionMaker is a free browser-based reaction video maker and split screen video maker. Create side-by-side videos, TikTok duet layouts, gaming facecam edits and YouTube reaction videos instantly — without watermark or login.
Create YouTube reaction videos and commentary layouts easily.
Use Reaction Video Maker →Make vertical duet style videos optimized for TikTok and Reels.
Use TikTok Duet Video Maker →Unlike heavy desktop editors, ReactionMaker runs entirely in your browser. No installation. No account required. Everything processes locally.
1. Upload two videos.
2. Choose layout.
3. Adjust audio.
4. Select aspect ratio.
5. Export final video.
Want to grow your YouTube or TikTok channel? Learn how to create better reaction videos, improve engagement, and use the right tools effectively.
Step-by-step guide to creating reaction videos using split screen, facecam, and duet formats.
Read Full Guide →Compare the best tools for creating reaction videos without watermark.
Read Article →Learn how to overlay facecam on gameplay or videos without OBS.
Read Guide →Yes. No watermark and no login required.
No. Everything runs in your browser.
No. Processing happens locally for privacy.