Landscape to portrait for Reels, Shorts & TikTok — or portrait to landscape for YouTube. Segment crop editing. Works entirely in your browser.
How it works
No software to install. Convert 16:9 to 9:16 or 9:16 to 16:9 directly in Chrome, Edge, or Firefox.
Step 1
Upload your video
Drop any MP4, MOV, or WebM. Your video stays on your device — nothing is sent to any server.
Step 2
Crop & reframe
Split into segments. Set a different crop position and zoom for each scene. Drag the output preview to reframe.
Step 3
Export & download
Click Export. Downloads as a clean MP4 with no watermark, ready to post on any platform.
Perfect for posting to
Why ConvertShorts
Most tools add watermarks, upload your video to their servers, or lock features behind a paywall. ConvertShorts doesn't.
100% private — nothing uploaded
Your video never leaves your device. Processing uses WebAssembly running locally in your browser.
No watermark, ever
Export is completely clean. No logos, no branding, ready to post anywhere.
Segment crop editing
Different crop & zoom for each scene. Follow the subject as it moves instead of a fixed center crop.
Free, no account needed
No sign-up, no email, no payment. Open the page and convert.
HD quality output
CRF 16 encoding preserves near-lossless quality. Output is as sharp as your source.
Live preview
See exactly what the output looks like before exporting. Adjust until it's perfect.
Complete guide
Instagram Reels, YouTube Shorts, and TikTok all require vertical 9:16 video. If you recorded on a camera, screen recorder, or downloaded a YouTube video, it will be in landscape 16:9 format. You need to convert it to portrait 9:16 before posting.
ConvertShorts makes this free and instant. Drop your landscape video, use the segment editor to set the crop position for each scene, and export a clean portrait MP4 — entirely in your browser without uploading anything.
16:9 (sixteen by nine) is the standard widescreen format used by most cameras, TVs, and YouTube videos. A 1920×1080 (1080p) or 3840×2160 (4K) video is 16:9. It's also called "landscape" or "horizontal" video.
9:16 (nine by sixteen) is the vertical format used by Instagram Reels, YouTube Shorts, TikTok, and Snapchat. A 1080×1920 video is 9:16. It's also called "portrait" or "vertical" video.
When converting from landscape to portrait, you're cropping a tall narrow strip from the wide frame. The key is choosing the right part of the frame to keep — usually where the subject is. ConvertShorts lets you drag the crop position and set a different crop for each scene, so you never miss the action.
Instagram Reels requires 9:16 vertical video, ideally 1080×1920 at 30fps. Drop your video into ConvertShorts, select Landscape → Portrait, adjust the crop, and export. The output MP4 is ready to upload directly to Instagram.
YouTube Shorts requires 9:16 vertical video under 60 seconds. Drop your landscape video, crop it to portrait, trim if needed, and export. The output is compatible with YouTube Shorts upload.
TikTok uses 9:16 vertical format. Drop your horizontal video into ConvertShorts, select 16:9 to 9:16, set your crop, and download. Your video is ready to upload to TikTok.
FAQ