iResize

Bulk Image Resizer

Resize, convert and compress many images at once with a single setting, then download them all as a ZIP. Everything runs in your browser — your files are never uploaded.

Resize

50%

Output

85%

How to bulk resize images online

  1. 1

    Drop or browse as many images as you like (PNG, JPG, WebP, HEIC).

  2. 2

    Choose how to resize — by percentage, to fit within a max width/height, or keep the size.

  3. 3

    Pick a single output format and quality to apply to all of them.

  4. 4

    Click Resize, watch the progress, then download the ZIP with every image.

About the Bulk Image Resizer

Resizing one image is easy; resizing fifty is tedious. The bulk resizer applies a single setting — a percentage, a maximum width and height, or a format change — to every image at once and hands you a single ZIP to download. It's ideal for preparing product photos, batches of screenshots, or a whole folder of images for the web, all processed locally without uploading anything.

Frequently asked questions

How many images can I process at once?

As many as your device's memory allows. Images are processed one by one in your browser, so there's no upload limit.

Can I convert formats in bulk as well as resize?

Yes. Pick a single output format (or keep each image's original) and it's applied to every image in the batch.

How do I get the results back?

All processed images are bundled into one ZIP file you can download with a single click.

Are my images uploaded to a server?

No. Everything happens locally in your browser — your images never leave your device.

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