Reduce image file size by adjusting compression quality, comparing the original and compressed versions side by side with live file size figures before you download.
Getting started
Choose an image from your device.
Adjust the quality slider and watch the estimated file size update live.
Compare against the original preview, then download when you are happy with the trade-off.
Why it helps
Side-by-side comparison lets you judge quality rather than guess at a percentage.
Live file size figures show exactly what each quality step saves.
Entirely local, so private photographs and documents stay private.
In practice
Getting a photo under an email or form attachment size limit.
Reducing page weight to improve a website's Core Web Vitals scores.
Preparing a batch of images for a fast-loading gallery.
Everything people ask most about the image compressor, answered plainly.
Keep exploring
More from Image Tools and beyond — most people who use this one reach for these next.