Why is the width preset to 800 px?

A 50 KB budget rarely covers more than about 800 px of photo detail. You can change or disable the resize in the settings.

Does it work on a phone?

Yes. It works in mobile Chrome and Safari; large batches are processed one by one to save memory.

1

JPG, PNG, WebP, AVIF; one or a hundred at once.

2

Choose a platform preset or enter width, height and the KB range you need.

3

Every file lands inside the range, correctly sized and named. ZIP, individual or straight to a folder.

You say 100–200 KB; the tool finds the quality for each image. A minimum keeps simple images from being over-compressed.

Processing happens in your browser with WebAssembly. Nothing is uploaded, so there is no queue, no size cap and no data retention.

WooCommerce, Shopify, WordPress, Open Graph, Instagram, classifieds. Add your own in Pro.

Why is the width preset to 800 px?: A 50 KB budget rarely covers more than about 800 px of photo detail. You can change or disable the resize in the settings.
Does it work on a phone?: Yes. It works in mobile Chrome and Safari; large batches are processed one by one to save memory.