Image Size Changer
Change image dimensions to any size. Choose from social media presets or enter custom values. No signup, files never stored.
Select images
or drag and drop them here
JPG, PNG, WEBP, GIF. Up to 20 MB each. Max 30 files.
How it works
Upload
Select one or more images from your device
Set Size
Enter custom dimensions or pick a preset
Download
Download resized files individually or as ZIP
JPG, PNG, WEBP, GIF
All formats
Up to 30 files
Batch resize
No sign-up
Free forever
Files never stored
100% private
How to Change Image Size Online
Upload an image, choose a social media preset or enter custom width and height in pixels, then download the resized photo. The tool preserves aspect ratio by default so your images are never stretched. All processing happens in your browser and on our server in memory only — files are never stored.
Common Image Sizes
| Platform | Recommended Size |
|---|---|
| Instagram Square | 1080 × 1080 px |
| Instagram Story | 1080 × 1920 px |
| Facebook Cover | 851 × 315 px |
| YouTube Thumbnail | 1280 × 720 px |
| Twitter Header | 1500 × 500 px |
| LinkedIn Cover | 1584 × 396 px |
| Passport Photo | 600 × 600 px |
| WhatsApp Profile | 500 × 500 px |
Resize Images on Any Device
The image size changer works in any modern browser, so you can resize photos on iPhone, Android, Windows, and Mac without downloading an app. Drag a file in from your gallery or paste it directly with Ctrl+V or Cmd+V. There's no signup, no watermark, and no daily limit.
Standard Image Sizes for Social Media in 2026
Each platform has dimensions that produce the best results. Instagram portrait posts (1080×1350) take up the most feed space and get the highest engagement. Facebook posts work best at 1200×630. X/Twitter crops in-feed images to 16:9, so use 1600×900. YouTube thumbnails should always be 1280×720. Using the correct dimensions prevents awkward cropping and ensures your content looks polished everywhere.