Image Resizer
Resize images online for free. Set custom dimensions, maintain aspect ratio, and download in JPEG, PNG, or WebP format.
About This Tool
Image Resizer changes the dimensions of your images by specifying exact pixel values or a percentage scale. It supports batch processing and maintains aspect ratio by default, making it perfect for web developers, bloggers, and e-commerce sellers who need consistently sized product images.
Click or drag and drop an image here
JPEG, PNG, WebP, GIF, BMP, SVG
Your images are processed locally and never uploaded to any server.
How to Use
- Click the upload area or drag and drop an image to select a file.
- Enter the desired width and height, or choose from preset sizes.
- Select the output format (JPEG, PNG, WebP) and quality level.
- Click the "Resize" button to process the image.
- Click the "Download" button to save the resized image.
FAQ
Is it safe to resize images here?
Yes, completely safe. All image processing happens locally in your browser. Your images are never uploaded to any server, ensuring complete privacy.
What formats are supported?
Input: Any image format supported by your browser, including JPEG, PNG, WebP, GIF, BMP, and SVG. Output: You can download resized images in JPEG, PNG, or WebP format.
Is there a file size limit?
Since there is no server upload, there is no strict limit. However, very large images (over 50MB) may slow down processing depending on your browser's available memory. Most images process without any issues.
Can I resize multiple images at once?
Currently, you can resize one image at a time. To process multiple images, simply upload and resize each image sequentially.
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How It Works
Your image is loaded into an off-screen Canvas element in the browser. The Canvas API resizes the image by drawing it at the target dimensions using drawImage() with bicubic-quality interpolation provided by the browser's rendering engine. You can enter exact pixel dimensions or a percentage, and the tool automatically calculates the other axis when the aspect-ratio lock is enabled.
All computation runs client-side through the HTML5 Canvas API. Your files are never uploaded to any server, ensuring complete privacy and instant results regardless of your internet speed.
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