One pass
Resize, format change and quality are applied to the whole set in a single run.
Batch Image Processing
Drop many images at once, set maximum dimensions and an output format, and download everything as a single ZIP. Processing is local, with no upload.
Downscale only
Size limits never enlarge an image — smaller ones are left untouched.
One ZIP
All results are bundled into a single archive; each file can also be downloaded on its own.
Frequently asked questions
Are my images uploaded?
No. All batch processing runs in your browser via the HTML canvas, and the ZIP is built locally. Nothing leaves your device.
How many files can I process at once?
Up to 100 files per batch. If you select more, the first 100 are processed and the page tells you how many were skipped.
What happens if one file is corrupt?
It is skipped and the batch continues. The names of any skipped files are listed when processing finishes.
Will small images be enlarged?
No. The max width and height only ever scale down; an image that is already smaller keeps its original dimensions.