Image Resizer
Resize images to exact width and height dimensions.
What this tool does
Set target width and height, then download the resized image while preserving the original format where possible.
How to use
- Upload an image.
- Enter width and height.
- Process and download.
Formula
Output dimensions = entered width × height (pixels); aspect lock scales height from width.
Examples
Resize to thumbnail
Input: 1920×1080 photo
Output: 320×180 image
Scale down large images for thumbnails or social previews.
Learn more
Resize without uploading
Images are resized in your browser. Use lock aspect ratio to scale proportionally, or enter exact width and height for platform specs.
After resizing
Need a smaller file? Compress to JPEG. Converting formats? Try PNG to JPG or JPG to PNG before resizing.
Web image workflow
Resize for layout, then compress before upload. Convert PNG to JPG when photos do not need transparency.
Generate favicon packs after you have a square master image.
Common use cases
- Create thumbnails
- Resize photos for web forms
- Prepare images for social media specs
FAQ
Does it maintain aspect ratio?
The tool resizes to exact dimensions entered; adjust width and height to preserve ratio manually.
What formats are supported?
Common browser-readable formats including PNG, JPG, WebP, and HEIC/HEIF.
Will quality decrease?
Downscaling generally looks fine; upscaling may appear soft or pixelated.
What is the max upload size?
Browser memory limits apply—very large images may fail on mobile devices.
Source notes
- Processing uses browser canvas APIs; files are not uploaded.
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Last reviewed: 2026-06-02