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Bulk Image Resizer

Resize multiple images at once. Set dimensions and download all resized images as a ZIP.

Drop images here or click to upload

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How to Use Bulk Image Resizer

1

Upload multiple images

Drag and drop or click to upload all the images you want to resize. You can select dozens of files at once from your file browser.

2

Set target dimensions

Enter your desired max width and height in pixels. Enable aspect ratio preservation to prevent stretching or distortion.

3

Choose output format

Select PNG for lossless quality, JPEG for smaller file sizes, or WebP for the best compression-to-quality ratio.

4

Download resized images

Click Download All to get a single ZIP file containing all resized images, ready for upload to your website or platform.

About Bulk Image Resizer

Bulk image resizer online — resize multiple images at once for free with batch processing. Upload dozens of photos, set target dimensions and output format, and download all resized images as a single ZIP file. Aspect ratio is preserved by default to prevent distortion. Choose PNG, JPEG, or WebP output format. Ideal for preparing images for websites, social media, email campaigns, and e-commerce listings. Process entire photo libraries in seconds without installing software. All resizing runs privately in your browser.

Key Features

  • Resize multiple images at once with powerful batch processing capabilities
  • Set custom max width and height with automatic aspect ratio preservation
  • Choose output format — PNG, JPEG, or WebP — for all resized images
  • Download all resized images as a single ZIP file for convenience
  • Preview resized images with file size comparisons before downloading
  • 100% private — all batch resizing happens in your browser, images never leave your device

Frequently Asked Questions

How to resize multiple images at once online?▾
Upload all your images to our free bulk resizer, set your target dimensions and output format, and download all resized images as a ZIP file. No signup required.
How to batch resize photos for a website?▾
Upload your photos, set the max width to your website's content width (e.g., 1200px), choose JPEG or WebP format, and download the optimized batch as a ZIP.
How to resize images in bulk without losing quality?▾
Use PNG format for lossless resizing, or JPEG at 90-100% quality for near-lossless compression. Aspect ratio preservation ensures images are never stretched or distorted.
How to resize images for social media in bulk?▾
Set dimensions to your platform's recommended size (e.g., 1080x1080 for Instagram square posts) and batch process all images at once with consistent sizing.
How many images can I resize at once?▾
There is no strict limit on the number of images. Processing speed depends on your device's memory and processing power, but most devices handle dozens of images easily.
How to resize images without stretching them?▾
Keep the "Maintain aspect ratio" option enabled (it is on by default). Images will be scaled to fit within your max dimensions without any stretching or distortion.
How to convert image format while resizing?▾
Select your desired output format (PNG, JPEG, or WebP) before processing. All images will be converted to the chosen format along with being resized.
Is this bulk resizer safe for private photos?▾
Yes. All resizing happens entirely in your browser. Your images are never uploaded to any server, ensuring complete privacy for personal and confidential photos.