Resize any photo to an exact width and height, or use one-click presets for Instagram, YouTube, Facebook and more.
🔒 Runs entirely in your browser – your files are never uploaded.
How to use the image resizer
- Choose an image.
- Type a width and height, or click a preset size.
- Download the resized image.
Social media image sizes
Instagram posts work best at 1080×1080 (square) or 1080×1350 (portrait), stories and reels at 1080×1920, YouTube thumbnails at 1280×720 and Facebook covers at 1640×624.
Frequently asked questions
How do I resize an image without stretching it?
Keep "lock aspect ratio" switched on. Change the width and the height updates automatically.
What size is a YouTube thumbnail?
1280 x 720 pixels (16:9), under 2 MB. Use the YouTube preset.
Is this image resizer free?
Yes, completely free with no watermark and no account.