Resize videos online
Change video dimensions for Instagram Stories, Reels, TikTok, YouTube and other populat formats, select aspect ratio, or insert custom width and height. Customise background colour for videos that don't completely fill the frame, and export a resized MP4.
MP4 · MOV · max 1024 MB · max 60 min
How it works
Select an aspect ratio, then choose Fit to keep the whole video visible and customise the canvas colour, or choose Fill to crop the video and select which area remains visible.
Preview
Working with a photo instead?
Add a custom background to your photo →Remove pauses
Automatically remove inactive moments from screen recordings
App Store Preview
Prepare videos for App Store preview: fix dimensions & audio
Frequently asked questions
What are the recommended video sizes for social media?
1080 × 1920 (9:16): Instagram Story & Reel, TikTok Video, YouTube Shorts, Facebook Story, Snapchat, Pinterest Idea Pin, LinkedIn Vertical, X (Twitter) Vertical
1080 × 1350 (4:5): Instagram Feed (Portrait), Facebook Feed, LinkedIn Feed
1080 × 1080 (1:1): Instagram Feed (Square)
1920 × 1080 (16:9): YouTube Standard video, Vimeo Standard video
Does it keep audio?
If your original video has audio, the exported video keeps it.
Is my video uploaded securely?
Videos are processed securely and are not stored permanently after processing.
What video formats are supported?
MP4 and MOV videos are supported.
Do I need to install anything?
No. Everything works directly in your browser.