Image Resize Tool - Resize Images Online
Simply drag and drop an image to resize it to your specified dimensions. Supports pixel and percentage resizing with optional aspect ratio lock. All processing happens in your browser, so your images are never sent to a server.
Images are scaled down to fit within these bounds while maintaining aspect ratio (no upscaling).
Drag & drop file here
or click to select
PNG, JPG, GIF, WebP, BMP
What is Image Resize?
Image resizing is the process of changing the width and height of an image. It is needed in various scenarios such as uploading to websites, creating thumbnails for social media, or reducing file size for email attachments. This tool uses the browser's Canvas API for high-quality resizing. You can scale images while maintaining the aspect ratio to prevent distortion.
See also: Image Compress · Image Format Converter
How to Use
- Enter the maximum width and height in pixels
- Drag and drop files onto the drop area, or click to select multiple files
- Processing starts automatically, and completed files are downloaded one by one
FAQ
- Will image quality degrade?
- The Canvas API provides high-quality interpolation during resizing. However, enlarging small images significantly may result in quality loss.
- What image formats are supported?
- PNG, JPEG, GIF, WebP, and BMP formats are supported.
- Are images sent to a server?
- No, all processing happens entirely in your browser. Your image data is never sent to any server.
- Can I maintain the aspect ratio when resizing?
- Yes. Enable the aspect ratio lock checkbox to automatically calculate the other dimension when you change width or height.
- What format is the resized image saved in?
- The image is saved in the same format as the original. PNG stays PNG, JPEG stays JPEG.
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Update History
Last Updated: 2026-02-24
- 2026-02-24 Added bulk resize feature for multiple files.
- 2026-02-21 Initial release