Resize Video for YouTube
YouTube’s standard shape is 16:9, 1920×1080 at 1080p. Resize your video to fit it exactly, or go vertical for Shorts. Everything runs on your device, nothing is uploaded.
How to resize a video for YouTube (16:9, 1920×1080)
- 1
Import your video
Drop your file. It stays on your device, nothing is uploaded.
- 2
Pick 16:9, or 9:16 for Shorts
16:9 exports 1920×1080, YouTube’s standard size. For a Short, pick 9:16 (1080×1920) instead. Then choose fill or contain.
- 3
Get your MP4
Run the resize and save the file at the exact size, ready to upload.
Right size, then the edit.
Once your video fits the platform, Montaj adds subtitles, cuts the silences and cleans up the sound. Automatically, on your device, no cloud.
Frequently asked questions
What size should a YouTube video be?
YouTube’s standard aspect ratio on a computer is 16:9, and 1080p in that ratio is 1920×1080. Pick the 16:9 preset here to export exactly that.
Should I add black bars for YouTube?
No. YouTube advises against baking padding or black bars into your video, because the player adapts its own frame around whatever shape you upload. Prefer fill so the image reaches the edges.
What size is a YouTube Short?
Vertical, 1080×1920 (9:16). YouTube categorises an upload as a Short when it has a square or vertical aspect ratio and runs up to three minutes. A rule that applies to videos uploaded from 15 October 2024.
Can I export in 4K here?
No. This browser tool tops out at 1920×1080 (1080p), which is the standard HD size for a 16:9 upload.
Is my video uploaded to a server?
No. The resize runs in your browser, on your device. Nothing is sent anywhere.