Image Resizer
Click to upload or drag and drop
JPG, PNG, WebP, GIF
About the Image Resizer
The Image Resizer on Toolzylo lets you resize any image to exact pixel dimensions directly in your browser. Whether you need a specific size for a social media profile picture, a website banner, or an email attachment, this tool handles it instantly without any software installation.
Simply upload your image by clicking the drop zone or dragging a file onto it. The tool displays the original dimensions and pre-fills the width and height fields. Enable the Maintain Aspect Ratio option to automatically adjust the other dimension when you change one — preventing distortion. Then click Resize and Download to get your resized PNG.
All processing uses the HTML5 Canvas API entirely in your browser. Your image is never uploaded to any server, making this tool completely private and instant.
How to Use the Image Resizer
- Click the upload area or drag an image file onto it.
- The original dimensions are shown and pre-filled in the width/height fields.
- Enter your desired width and/or height in pixels.
- Check Maintain Aspect Ratio to avoid distortion.
- Click Resize & Download to save the resized image.
Features
- Resize to any pixel dimensions
- Aspect ratio lock to prevent distortion
- Drag-and-drop or click-to-upload
- Supports JPG, PNG, WebP, GIF input
- Output downloaded as PNG
- Fully browser-based — no server upload
Frequently Asked Questions
Does the image get uploaded to a server?
No. All resizing happens in your browser using the HTML5 Canvas API. Your image never leaves your device.
What formats are supported?
You can upload JPG, PNG, WebP, or GIF images. The resized output is downloaded as a PNG file.
What does Maintain Aspect Ratio do?
When enabled, changing the width automatically updates the height (and vice versa) to keep the original proportions of the image.