点击或拖拽图片到这里
支持 JPG, PNG, WebP 格式，文件大小不超过 20MB
What this tool does
Convert JPG/WebP/etc. to lossless PNG at original dimensions — no recompression quality loss beyond the source.
How to use
- Upload.
- Confirm preview.
- Export PNG.
FAQ
Does JPG→PNG improve quality?
No — lost detail stays lost; files usually grow.
Is WebP transparency kept?
Yes.
More tools in thedeveloper toolbox. For store preview shots, try theApp Store screenshot maker.