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Bulk Image Resize

Resize multiple images at once by percentage, dimensions, or file size.

Drag & Drop images here

or click to browse from your device

What is Bulk Image Resize?

This bulk image resizer lets you resize multiple images at once instead of opening each one in an editor. Upload a whole folder of photos, set a target width, height, or percentage, and let the tool batch resize images to a consistent size in one pass. It's built for people who need to resize multiple images at once for a website, marketplace listing, or print job without installing software.

How It Works

Each image you add is loaded into your browser's memory and resized one at a time using the HTML5 Canvas API, which redraws the picture at the new pixel dimensions before exporting it back to a file. The tool queues your images and processes them sequentially so your browser tab stays responsive even with large batches. Once every image in the queue is resized, they're packaged together for download.

Is It Safe to Use?

All resizing happens locally in your browser tab, so your original photos are never uploaded to a server. This matters when you're batch-processing personal photos or client images, since the files never leave your device during the entire resize job. Closing the tab simply clears the in-memory data, with no copies left behind anywhere else.

How to Use Bulk Image Resize (Step-by-Step Guide)

  1. Drag and drop multiple images at once into the upload area, or click to browse your files
  2. Choose a resize method: exact dimensions, percentage scale, or target file size
  3. Enter your desired width and height, or pick a percentage to scale down or up
  4. Preview the queue to confirm every image is listed correctly
  5. Click resize to process the full batch using the Canvas API in your browser
  6. Download all resized images together as a single ZIP file

Frequently Asked Questions

How many images can I resize at once with this bulk image resizer?
You can add as many images as your browser's memory comfortably allows in a single session; most users batch resize images at once in groups of dozens to a few hundred without issues.
What image formats are supported?
JPG, PNG, and WebP are all supported for both upload and output, so you can mix formats in the same batch.
Will resizing reduce image quality?
Resizing down generally keeps quality high since fewer pixels are being rendered; scaling up can introduce some softness, which is normal for any resizing method.
Can I resize images to an exact pixel size instead of a percentage?
Yes, you can switch between percentage scaling and exact width/height dimensions depending on what your project needs.
Does this bulk photo resizer online tool keep the original aspect ratio?
You can lock the aspect ratio to avoid stretching, or unlock it if you need to force a specific width and height.
Do I need to install any software?
No, everything runs directly in your browser tab using the Canvas API, so there's nothing to download or install.
What happens to my images after I close the browser tab?
Nothing is stored; since processing happens only in memory, closing the tab clears everything and no files are kept on any server.
Can I resize images for a specific platform like Instagram or an online store?
Yes, just enter the exact pixel dimensions that platform requires and apply it to your entire batch of images at once.
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