Verticalize – Convert landscape videos to vertical 9:16 format

Summary: Verticalize is a free client-side tool that resizes 16:9 videos to 9:16 format for TikTok, Reels, and YouTube Shorts without uploading files or adding watermarks. It uses WebAssembly to process videos entirely in the browser and applies smart crop and blur effects to fill vertical space.

What it does

Verticalize converts landscape videos to vertical format by cropping and adding a blurred background, all processed client-side in the browser using WebAssembly.

Who it's for

It is designed for users needing to reformat videos for short-form platforms like TikTok, Instagram Reels, and YouTube Shorts without subscription fees or watermarks.

Why it matters

It eliminates the need for paid subscriptions or uploading videos to external servers, preserving privacy and speed while producing vertical content.