offlinewebtools.com browser-local workbench

Vertical Video Format (9:16)

Convert videos to 9:16 vertical format for TikTok, Instagram Reels, YouTube Shorts, and other mobile-first platforms.

Shipped

Browser local

Source file *

Files are processed locally in your browser using WebAssembly. This input is required.

Saved FFmpeg presets (stored locally)

Saved presets

Preset name

Preview and export

Inspect the source before running FFmpeg, then preview the generated output before downloading.

Local media

Choose a media file to fill this source preview before processing.

Expected output

The generated file preview, size, type, and download action appear here after processing.

Framing and safe-area controls

0×0px

Upload a video to enable framing.

Safe area guide 12%

Keep important subjects away from the outer area while moving or resizing the frame.

Width (pixels)

Common: 720 (HD), 1080 (Full HD), 2160 (4K)

What this tool does

Vertical Video Format (9:16) helps you convert videos to 9:16 vertical format for TikTok, Instagram Reels, YouTube Shorts, and other mobile-first platforms.

What you get

Vertical Video Format (9:16) produces a direct output in this page and keeps all processing on your device, with nothing uploaded to our servers.

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.