Upload Your Video
Drag and drop or select a video file from your device.
Resize Video
Online
Resize videos for TikTok, Instagram, YouTube, and more. Choose from popular presets or set custom dimensions. Free, secure, and no sign-up required.
100% FreeQuick SetupBrowser-Based
How It Works
Fast, reliable, and optimized for all social media platforms.
Choose Your Size
Pick a platform preset or enter custom dimensions.
Download Instantly
Get your resized video ready to upload anywhere.
Everything You Need
A complete video resizer built for speed and simplicity.
Platform Presets
One-click presets for TikTok, Instagram, YouTube, LinkedIn, Twitter, and Facebook.
Custom Dimensions
Set any width and height up to 4K resolution with full control over aspect ratio.
Fit, Fill, or Stretch
Choose how your video adapts: letterbox, crop to fill, or stretch to fit.
All Formats Supported
Works with MP4, WebM, MOV, MKV, AVI, and more. Output in high-quality MP4.
Private & Secure
Your video is processed locally in your browser. Nothing is uploaded to any server.
Fast Processing
Hardware-accelerated resizing delivers results in seconds, not minutes.
Why Resize Your Videos?
Every Platform Has Different Requirements
TikTok and Instagram Reels need 9:16 vertical video. YouTube expects 16:9 widescreen. LinkedIn favours landscape. Posting the wrong dimensions leads to awkward cropping, black bars, or blurry output. A dedicated resizer lets you hit the exact specs every platform requires so your content always looks sharp and professional.
Supported Platforms & Presets
One-click presets cover the most popular platforms:
- TikTok, Instagram Reels, YouTube Shorts: 1080 x 1920 (9:16)
- Instagram Feed: 1080 x 1080 (1:1)
- YouTube, LinkedIn, Twitter/X: 1920 x 1080 (16:9)
- Facebook: 1280 x 720 (16:9)
- Cinematic: 2560 x 1080 (21:9)
- Classic TV: 1440 x 1080 (4:3)
Frequently Asked Questions
Find answers to common questions about our video resizer.
Our resizer supports MP4, WebM, MOV, MKV, AVI, and FLV.
No. All processing happens locally in your browser using hardware-accelerated rendering. Your video never leaves your device.
We offer one-click presets for TikTok, Instagram Reels, Instagram Feed, Instagram Story, YouTube, YouTube Shorts, LinkedIn, Twitter/X, Facebook, and Facebook Reels. Generic aspect ratios like 16:9, 9:16, 1:1, 21:9, and 4:3 are also available.
Yes. You can enter any width and height up to 4K resolution (3840 × 2160). You also choose how the video adapts: fit (letterbox), fill (crop), or stretch.
There is no hard file-size limit because the video is processed in your browser. Performance depends on your device, and most modern computers handle files up to several GB without issues.
Resize for every platform
Jump straight to a ready-made size for your platform
TikTok
1080 x 1920 · 9:16
Instagram Reels
1080 x 1920 · 9:16
Instagram Feed
1080 x 1080 · 1:1
Instagram Story
1080 x 1920 · 9:16
YouTube
1920 x 1080 · 16:9
YouTube Shorts
1080 x 1920 · 9:16
1920 x 1080 · 16:9
Twitter/X
1920 x 1080 · 16:9
1280 x 720 · 16:9
Facebook Reels
1080 x 1920 · 9:16
Square (1:1)
1080 x 1080 · 1:1
Landscape (16:9)
1920 x 1080 · 16:9
Portrait (9:16)
1080 x 1920 · 9:16
Cinematic (21:9)
2560 x 1080 · 21:9
Classic (4:3)
1440 x 1080 · 4:3
Related Tools
Explore more free browser-based tools