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Resize images in bulk

Resize many images at once to the same size, percentage or aspect ratio, or make them smaller for email, then download them all as one ZIP file. Everything happens in your browser, so your photos are never uploaded and there's no file limit.

Drop images hereChoose images

Resize them all at once, right on your device.

Your files stay on this device. Nothing is uploaded.

How to resize images in bulk

  1. Add your images

    Add a whole folder's worth of JPG, PNG, WebP, GIF or HEIC images on this page, or choose them from your device. There's no limit on how many.

  2. Choose the new size

    Pick a percentage, an exact width and height, a width or height only, the longest side, or an aspect ratio such as 1:1 or 4:5. Change the format and quality if you need smaller files.

  3. Download them all

    Every image is resized on your device in a few seconds. Download them one by one or all together as a ZIP file.

Resize photos: details

Input
JPG, PNG, WebP, GIF, BMP, AVIF and HEIC (iPhone photos) in every current browser
Output
JPG, PNG or WebP, one by one or as a ZIP
Ways to resize
Percentage, exact size, width, height, longest side, aspect ratio
Number of images
No limit; hundreds at once is fine on a computer
Upload
None; images are processed in your browser
Photo orientation
Phone photos are turned upright automatically
Quality
Lanczos3 resampling, the filter photo editors use, so fine patterns don't turn into moiré
Largest size
16384 pixels a side; bigger results are scaled down as a whole, keeping their proportions
Metadata
Removed, including GPS location and camera details
Price
Free, no watermark, no sign-up

Resize photos: questions

How do I resize many images at once?

Use a bulk resizer that gives every image the same settings. On tuul.io you add all the images, choose the size (for example 1080 × 1080 or 50%) and download the results as one ZIP; the resizing happens in your browser.

Are my images uploaded?

No. The resizer runs in your browser, so your photos are read and resized on your own device and never sent to a server.

How do I make all my images the same size?

Choose Exact width and height, enter the size, then pick how to fit pictures with a different shape: crop them to fill the size, add borders, or stretch them.

How do I resize images for Instagram?

Choose Aspect ratio and pick 4:5 for portrait posts or 1:1 for square posts. For an exact 1080 × 1350 pixel size, choose Exact width and height with Crop to fill.

Will resizing reduce quality?

Making an image smaller keeps it sharp. For JPG and WebP you can set the quality; 80–90% is a good balance between file size and quality. Enlarging small images makes them blurry, so that's off by default.

Is there a limit on the number or size of images?

There's no limit set by us. Very large batches depend on your device's memory, so a computer handles more at once than a phone.

Can I resize HEIC photos from an iPhone?

Yes, in any current browser. Safari opens HEIC itself; in Chrome, Edge and Firefox a HEIC decoder downloads once, with the first photo, and runs on your device. With Same as original, HEIC photos are saved as JPG, because browsers can't save HEIC.

Next steps

  • Compress imagesMake photos smaller in KB or MB, many at once: by quality, or to a size like 100 KB.
  • Crop imageCut a photo to the part you want: drag a box, pick 1:1, 4:5 or 16:9, or type exact pixels.
  • Images to PDFPut photos and scans into one PDF, in the order you choose.
  • Remove location from photosTake the GPS location, EXIF and other hidden metadata out of photos, losslessly.

Guides

More image tools

  • HEIC to JPGTurn iPhone photos (HEIC) into JPG files, many at once.
  • WebP to JPGConvert WebP images to JPG, many at once.
  • PNG to JPGConvert PNG images to JPG, many at once.
  • HEIC to PNGTurn iPhone photos (HEIC) into PNG files, many at once.
  • JPG to PNGConvert JPG images to PNG, many at once.
  • AVIF to JPGConvert AVIF images to JPG, many at once.
  • JPG to WebPConvert JPG images to WebP, many at once.
  • PNG to WebPConvert PNG images to WebP, many at once.
  • WebP to PNGConvert WebP images to PNG, many at once.
  • AVIF to PNGConvert AVIF images to PNG, many at once.