Circle Crop an Image
Crop photos into clean circular avatars with transparent outer corners in PNG format. Ideal for profile badges, icons, and UI avatars.
Best solution
Local processing: Circle Crop an Image; Ready-to-use round avatar for design systems and profile icons.
Choose a file to start. Nothing is uploaded.
Single still image. JPEG uses white behind transparency. Decoder notices
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Methodology & calculation rule
Center Square Extraction → Inscribe Circle (Radius = min(W, H) / 2) → Zero Alpha Outer Region
Exported as a square PNG file with transparent corners (alpha = 0). Do not convert to JPG if you need round transparency.
All image processing executes client-side within your browser sandbox via HTML5 Canvas and WebAssembly. No photographs, bitmaps, or metadata are ever uploaded to remote servers.
Output files are generated in-memory as local object URLs. Files must be smaller than 20 MB and under 24 megapixels.
Real-World Context & Technical Standards
Circular Avatars and Contact Badges
Modern design systems (Apple Human Interface Guidelines, Google Material Design) universally render user profile pictures and contact badges inside circular masks.
Transparent Corner Bounding Box
Image file formats are inherently rectangular. Circle cropping extracts the maximum inscribed circle from a centered square, rendering all outside corner pixels fully transparent (alpha = 0).
PNG Requirement for Alpha Transparency
Circle-cropped imagery must be saved in PNG or WebP to retain transparent corner pixels. Converting to JPEG automatically fills corner regions with solid white background.
Related image tools
| Tool | Type | Format |
|---|---|---|
| HEIC to JPG | Diagnostic | JPEG |
| HEIC to PNG | Diagnostic | PNG |
| WebP to PNG | Diagnostic | PNG |
| PNG to JPG | Diagnostic | JPEG |
| JPG to PNG | Diagnostic | PNG |
Frequently Asked Questions
Why is the downloaded file still a rectangle in my folder?
All digital image files are rectangular arrays. The four corners outside the circle are set to 100% transparent pixels.
Can I upload this as an avatar directly?
Yes. Any modern website or chat app supporting PNG will render the transparent corners seamlessly against its background.