Resize Video for Reels
Reels fill the screen in 9:16. Resize your video to 1080×1920 so it plays edge to edge instead of floating between bars. Everything runs on your device.
How to resize a video for Reels (9:16, 1080×1920)
- 1
Import your video
Drop your file. It stays on your device, nothing is uploaded.
- 2
Pick the 9:16 preset
9:16 gives you 1080×1920, the Reels size. Then choose fill to cover the frame edge to edge, or contain to keep every pixel of the original with bars.
- 3
Get your MP4
Run the resize and save a 1080×1920 file, ready to post as a Reel.
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 is a Reel?
1080×1920 pixels, 9:16 vertical. That’s the full-screen Reels canvas. Pick the 9:16 preset here and the export matches it exactly.
What about the feed, Story or square formats?
Reels are 9:16, but the portrait feed is 4:5 (1080×1350) and square posts are 1080×1080. Our dedicated Instagram resizer covers all the Instagram placements in one place, including 1.91:1 landscape.
Fill or contain for a Reel?
Fill usually looks best, because a Reel plays edge to edge and baked-in bars stay visible. Pick contain when the crop would cut off something that matters.
Will resizing lower the quality?
The export is a clean 1080×1920 MP4. Going up from a smaller source can’t invent detail, so start from the highest-quality file you have.
Is my video uploaded anywhere?
No. The whole resize happens in your browser, on your device. The file is never sent to a server.