Free to use until December 31, 2026No signup. Files stay on your device.

Bulk resize to multiple sizes

Bulk resize images to two sizes at once.

Define two output sizes — for example a 1600 px main image and a 400 px square thumbnail — and run a whole folder through both. Each size goes into its own folder in one ZIP, with the real pixel size and file size of every output in the report.

Step 1 · Output sizes

Profile 1: main/ · JPG
Profile 2: thumbnails/ · WebP
Saved settings

Saves only these settings in this browser — never photos or CSV contents.

Photos

Drop product photos here

JPG, PNG or WebP. Up to 100 files, 20 MiB each, 250 MiB in total, 40 megapixels per image.

Optional · Naming CSV

Columns source_filename, sku and optional view, separated by commas or semicolons. Each photo becomes sku_view. SKUs stay text, so leading zeros and long numbers are kept. Files are matched by file name only — never by what the picture shows.

Add photos or try the sample batch to start.

How it works

  1. 01Set both sizes: width, height, format and fit inside or center crop.
  2. 02Add a max file size in KiB and the smallest size you will accept.
  3. 03Add up to 100 photos; originals are never changed.
  4. 04Process and download one ZIP with a folder per size and manifest.csv.

Limits

  • Up to 100 JPG, PNG or WebP files, 20 MiB each, 250 MiB in total.
  • 40 megapixels per source image and per output size; 300 MiB total output.
  • Photos are never enlarged. Outputs below your minimum size fail instead.
  • Max sizes are in KiB (1 KiB = 1024 bytes).
  • Re-encoding removes EXIF, IPTC and other metadata; orientation is applied to the pixels first. Metadata is not preserved. Files in which C2PA content credentials or AI-generated labels are detected are refused rather than stripped — detection looks for known markers only and is not exhaustive.
  • Results are not checked against any marketplace's rules — compare with your platform's requirements.

Related tools

Questions & limits

Fit inside or center crop?
Fit inside keeps the whole photo, so one side can be shorter than the box. Center crop fills the exact width and height and trims the edges.
What if a photo is too small?
It is never enlarged. If the result would fall below the profile's minimum width or height, that output fails with the reason in the report.
What if the size limit cannot be reached?
Quality is lowered first, down to your quality floor, then the image is scaled down — but never below your minimum size. If it still does not fit, that output fails instead of being exported oversized.
What is in the ZIP?
One folder per profile plus manifest.csv, which lists every photo and profile with its status, output name, real pixel size, bytes and the reason for any failure.