How to compress an image without losing quality
Quick answer
To compress an image, drop it into the Compress images tool, keep the quality near 75 and press Compress. Photos usually get much smaller with no change you can see, and the picture never leaves your device.
Steps
- Open the Compress images tool and drop in your JPG, PNG or WebP files, or paste them from the clipboard.
- Set the quality. Around 75 keeps a photo looking the same while making the file much smaller.
- Press Compress and look at the before and after size next to each file.
- Download each file, or all of them in one ZIP.
What changes for each file type
JPG and WebP are compressed with an adjustable quality, so a lower number means a smaller file and a little less detail. Photos from a phone are often 3 to 8 MB, and most of that can go without a visible difference.
PNG is different. It is optimised without losing anything, so the picture is exactly the same but the saving is smaller. If a PNG is a photo, converting it to JPG or WebP will save far more.
If you need an exact size
Forms often say a photo must be under a number of kilobytes. For that, use the target size box on the Resize images tool, or open a ready-made page such as Compress image to 100 KB. It tries different quality levels and keeps the best one that fits.
If a file cannot be made smaller, you get the original back instead of a worse one.
Common questions
Does compressing an image reduce its quality?
JPG and WebP lose a small amount of detail as the quality goes down, and at around 75 the change is hard to see. PNG is optimised without any loss.
Is my picture uploaded when I compress it?
No. The work happens in your browser on your own device, so the file is never sent anywhere.
Can I compress many images at once?
Yes. Add as many as you like, and download them together as a ZIP.
Written by Basic App Company. Last checked against the tool on 12 November 2026. The tool runs in your browser, so your pictures are not uploaded.