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Resize IMAGE

Define your dimensions, by percent or pixel, and resize your JPG, PNG, SVG, and WebP images.

Resize Images Online for Free

The Image Resizer lets you change the dimensions of any image in seconds. Every operation runs entirely within your browser — your images are never uploaded to a server.

Pixel-Perfect Control and Percentage Scaling

You have two flexible ways to resize your images. In pixel mode, enter exact width and height values. In percentage mode, scale images proportionally. The aspect ratio lock ensures your images never appear stretched.

Built-In Social Media Presets

One-click presets for Instagram Post (1080×1080), Instagram Story (1080×1920), Facebook Cover (820×312), Twitter Header (1500×500), and YouTube Thumbnail (1280×720).

High-Quality Output

Uses the HTML5 Canvas API with high-quality bicubic interpolation. JPEG images are exported at 92% quality. PNG images preserve full lossless transparency.

Frequently Asked Questions

Does the Image Resizer upload my images to a server?
No. All image processing happens directly in your browser using the HTML5 Canvas API. Your images never leave your device.
What image formats are supported?
JPEG, PNG, WebP, GIF, BMP, and SVG. Output is saved as JPEG or PNG.
Will resizing my image reduce its quality?
The tool uses high-quality image smoothing. Downscaling preserves visual quality very well. Upscaling beyond original dimensions may introduce some softness.
How does the aspect ratio lock work?
When enabled, changing width automatically recalculates height to maintain original proportions. You can disable it for custom dimensions.
Can I resize an image to exact social media dimensions?
Yes. Built-in presets for Instagram Post, Instagram Story, Facebook Cover, Twitter Header, and YouTube Thumbnail.

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Resize IMAGE - Free Online Resize to any dimension | Biznab