URLTO GUIDE
Why the quality slider is disabled for PNG
The quality slider is disabled for PNG output. Compare actual size and alternative formats instead of expecting JPEG or WebP quality control.
URLTO editorial · Updated
Image compression · series04 / 10
Input and processing example
Compare it yourself · Illustrative example
비교 / Compare PNG: 품질 슬라이더 비활성화 / quality slider disabled JPEG·WebP: 품질 후보 비교 / compare quality variants 각 파일의 실제 크기 / actual file sizes
Steps to verify
- Read the output format.
- Compare actual size.
- Review alternatives preserving transparency and text.
How to interpret the result
Browser PNG export does not apply quality in the same way, so this flow disables adjustment. With another format, recheck quality controls and transparency.
Deciding what to do next
Sharpness can matter for logos and screenshots. Compare text and backgrounds before choosing a smaller alternative.
Feature scope
Export a new file at the same dimensions in the browser. Compare JPEG/WebP quality and format; PNG quality behaves differently and the output is not always smaller.
Frequently asked questions
Is unchanged PNG size necessarily an error?
It can follow format behavior. Judge actual output and required quality.