OverlayCheck – Visualize safe zones for TikTok, Reels, and Shorts

Summary: OverlayCheck is a client-side tool that lets users upload vertical videos and preview UI overlays from TikTok, Reels, and Shorts to ensure captions and CTAs remain visible. It provides interactive, adjustable opacity overlays without uploading content to a server.

What it does

It overlays platform-specific UI elements on uploaded videos, allowing users to toggle between TikTok, Reels, and Shorts and adjust overlay opacity for precise safe zone visualization.

Who it's for

Content creators who need to verify that important video elements are not obscured by social media interface buttons.

Why it matters

It solves the issue of social media UI covering up to 30% of vertical videos, preventing captions or CTAs from being hidden.