Image resizer
Resize images to exact pixel dimensions in your browser. Lock aspect ratio, use presets for common sizes, download the result instantly. No upload to any server.
- 100% free
- No sign-up
- No limits
- Instant results
Drop image, click to browse, or Ctrl+V to paste
JPEG, PNG, WebP — any size
- Resize to exact pixel dimensions
- Lock aspect ratio toggle
- Common size presets (1920×1080, 800×600, etc.)
- Drag and drop image upload
- Zero server upload — 100% browser
- Download resized image instantly
What is Image Resizer?
An image resizer lets you change the pixel dimensions of any image to fit specific requirements.
Whether you need images sized for social media posts (1080×1080 for Instagram), website headers (1920×1080), email signatures (400×150), or product thumbnails (150×150), this tool handles it instantly. The resize happens entirely in your browser using the Canvas API — your images are never uploaded to any server. The aspect ratio lock ensures your images are never distorted when resizing. Five common size presets are included for quick resizing, and you can enter any custom width and height in pixels. The tool supports JPEG, PNG, and WebP formats. PNG transparency is preserved during resizing. Whether you are preparing images for your website, optimizing photos for email, or creating consistently-sized thumbnails for an e-commerce store, this resizer gives you pixel-perfect control.
How to use Image Resizer
- 1
Upload your image
Drag and drop an image onto the upload area or click to browse your files. The tool shows the original dimensions immediately after loading.
- 2
Set target dimensions
Enter width and height in pixels, use a preset, or enter just one dimension with aspect ratio locked to auto-calculate the other. Presets include 1920×1080, 1280×720, 800×600, and more.
- 3
Resize and download
Click Resize Image to process. The result shows a preview with the new dimensions. Click Download to save the resized image to your device.
Everything this tool
does for you
- Resize to exact pixel dimensions with custom width and height
- Aspect ratio lock prevents image distortion
- Five common size presets for quick resizing
- Supports JPEG, PNG (with transparency), and WebP formats
- Drag-and-drop upload with instant preview
- Zero server upload — all processing in your browser
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Frequently asked questions
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