How Do I Compress an Image Without Losing Too Much Quality?
The practical goal is not zero quality loss; it is to remove file weight that is not visible at the image’s intended display size.
What to do
Start with a copy of the original, choose an appropriate format, and lower quality gradually while checking the result at normal viewing size. The simplest next step is to Compress Image. If the issue is actually about jpg vs png, see JPG vs PNG as well.
Why this happens
Image problems often come from three separate variables: pixel dimensions, encoded file size and file format. Changing one does not automatically solve the others. A very large photo may need resizing even when its format is already JPG; a transparent graphic may need PNG or WebP even when the file size is acceptable; and an upload limit may be measured in megabytes rather than pixels.
Before editing, check the requirements of the place where the image will be used. That gives you a concrete target and reduces unnecessary quality loss. When possible, keep the original file and create a delivery copy for the specific destination.
Common questions
What quality setting should I use?
There is no universal number. Start around a moderate quality setting and inspect the image. Detailed photos can tolerate different settings from text-heavy screenshots.
Should I resize before compression?
If the image is larger than the destination requires, yes. Fewer pixels often make a bigger difference than repeatedly lowering quality.
Can compression make an image blurry?
Aggressive lossy compression can introduce blur, ringing or block-like artifacts. Stop when the visible result is good enough for its intended use.