Rounded Corner Image Maker
圆角图片透明PNG头像处理UI素材
Adjust corner roundness from 0-100% with live transparent checkerboard preview and export straight to transparent PNG — for avatars and UI assets, fully local.
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How to Use
- Pick a local image (files never leave your device)
- Adjust options and preview instantly
- Click download to save the processed image
- Images are processed inside your browser only — never uploaded to any server
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FAQ
What does 100% roundness look like?
It reaches the inscribed-circle limit, i.e. a circular avatar effect; around 50% gives typical card corner feel.
Why must the export be PNG?
JPEG lacks alpha so transparency becomes solid white; only PNG preserves true rounded transparency.
Is my image uploaded?
No, everything runs locally in your browser.