image tools
Resize Images Online
Change the width and height of any image with precision. Maintain exact aspect ratios or specify custom dimensions for social media, blogs, or passports.
Processed locally in your browser. No files are uploaded to our servers.
Upload Image to Resize Dimensions
Specify exact pixel bounds or scale by percentage.
100% Client-Side Privacy: File Never Leaves Your Device
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How to Use Image Resizer
1
Upload Image
Select your image from your computer or smartphone.
2
Specify Dimensions
Enter target width or height in pixels, or scale by a percentage.
3
Download
Click Resize & Download to save your newly proportioned image.
About Image Resizer
Resizing an image interpolates existing pixel grids onto a new dimension matrix. Using browser-native bicubic filtering algorithms, Toolxilla renders the transformed image on an offscreen canvas element and re-exports it without loss of pixel fidelity.
Supported Formats
JPGPNGWebPSVG
Operational Limits
- •Upscaling small low-res images beyond 400% may cause blurriness
Key Features
- Pixel-level width and height control
- Lock aspect ratio toggle to prevent distortion
- Preset dimension shortcuts for Instagram, YouTube, and banners
- Smooth bicubic canvas interpolation
Frequently Asked Questions
When enabled, changing the width automatically updates the height proportionally so your image does not appear stretched or squashed.