Compress to a size you name
Say how big the file may be and the quality is found for you. Nothing is sent anywhere unless you ask for it.
Drop images here
Or click to choose them. Several at once is fine, and you can drop more later.
Target
Everything re-runs as you change it
JPEG cannot be transparent, so whatever was see-through gets this colour.
Optional. A picture is shrunk on its own anyway when quality alone cannot reach the target, but capping it here usually looks better than letting the quality drop that far.
More than one image comes back as a single .zip.
Sign in to send a result straight to your account instead of downloading it.
Images
How the size is hit
An encoder takes a quality and answers with a size, never the other way round. So the page tries a quality, looks at the result and halves what is left to search, about nine times per image. Each row says which quality it settled on.
When quality is not enough
A large photo pushed towards a small target runs out of quality before it runs out of pixels. Below 30% the search stops lowering quality and starts shrinking the picture instead, which looks better at the same size. A row that still could not get there says so rather than pretending.
Questions people ask
Are my images uploaded to compress them?
No. Every attempt at the target size is encoded by your own browser, so the picture never leaves your device.
How does it hit the exact size?
An encoder takes a quality and answers with a size, never the other way round. The page tries a quality, looks at the result and halves what is left to search, about nine times per image.
What if the target is too small for the picture?
Below 30% quality the search stops lowering quality and shrinks the picture instead, which looks better at the same size. A result that still cannot get there says so.