Tada File

Bulk Image Resizer

Resize up to 50 images at once by percentage, exact width, or a maximum box, and download them as one ZIP.

Bulk Image Resizer applies the same size rule to many images in one step. You can scale every file by a percentage, set an exact width, or fit each image inside a box such as 1200 × 800 so that no side is larger than the box. Each file can keep its original format, and all results download together in one ZIP.

How to use Bulk Image Resizer

  1. 1

    Add your images

    Drop up to 50 JPG, PNG or WebP files (up to 50 MB each) on the upload area, or click to choose them.

  2. 2

    Choose a resize mode

    Percentage Scale resizes each image from 10% to 200%. Exact Pixels sets the width, and also the height if you unlock the aspect ratio. Fit Within Box shrinks each image to fit inside the width and height you enter.

  3. 3

    Pick the output format

    Keep Same as original, or convert everything to PNG, JPG or WebP. Prevent Upscaling is on by default so smaller images are not enlarged.

  4. 4

    Resize and download

    Click Resize All, then Download ZIP, or save single files from the list.

What it does

Three resize modes
Scale by percentage, set an exact width, or fit inside a maximum width and height.
Keeps each file's format
With Same as original, JPGs stay JPG, PNGs stay PNG and WebP files stay WebP.
Prevent upscaling
In Exact Pixels and Fit Within Box modes, images that are already smaller than the target keep their size.
One ZIP download
Resized files keep their original names with -resized added, and download together in one archive.

Questions

How many images can I resize at once?

Up to 50 images per batch, each up to 50 MB. Very large photos use a lot of memory, so on a phone it can help to work in smaller batches.

Will my images be stretched?

Not in Percentage Scale or Fit Within Box mode, which always keep the proportions. In Exact Pixels mode, if you unlock the aspect ratio and set both sides, images with a different shape will be stretched.

Which file formats are supported?

JPG, PNG and WebP. iPhone HEIC files are not accepted here; convert them first with the Universal Image Converter.

What quality is used for JPG and WebP files?

Resized JPG and WebP files are saved at 90% quality. When you convert transparent images to JPG, transparent areas become white.

Are my files uploaded anywhere?

No. All images are resized in this browser tab and the ZIP file is created on your device.