Round image corners online

Using rounded corners for modern image design

Rounded corners soften the visual impact of rectangular images, creating a more approachable and modern aesthetic. This design pattern is ubiquitous in mobile apps, card-based web layouts, and social media platforms where sharp 90-degree corners feel harsh compared to the smooth curves users expect from contemporary interfaces.

The corner radius determines how much rounding is applied. Small values (8-16 pixels) create subtle softening suitable for thumbnails and card images. Medium values (24-48 pixels) produce the rounded rectangle look common in app icons and profile pictures. Large values approaching half the image width create pill shapes or circles.

Background color matters when rounding corners on JPG images because JPG does not support transparency. The corners that get cut away must be filled with a color — typically white for light backgrounds or a matching page color. For transparent corners, export as PNG or WEBP which support alpha channels.

Rounded corners are particularly effective for avatar images, app store screenshots, product cards, and testimonial photos. They create visual consistency when multiple images appear in a grid, and they signal to users that an image is interactive or clickable — a convention established by iOS and Material Design.

Common use cases

• Profile pictures and avatars: Apply consistent rounded corners or full circles to user profile images for social platforms, team pages, and comment sections.
• App store screenshots: Round the corners of mobile app screenshots to match the device frame aesthetic expected in App Store and Google Play listings.
• Card-based web layouts: Prepare images for card components in web applications where rounded corners match the card's border-radius for a cohesive design.
• Marketing materials: Soften product photos and team headshots for brochures, presentations, and email templates where rounded images feel more approachable than sharp rectangles.

Technical details

Corner radius

Measured in pixels from the corner point. A radius of 0 means sharp corners. A radius equal to half the shortest side produces a full circle (for square images) or a pill shape (for rectangles).

Clipping method

The tool draws a rounded rectangle path on the Canvas, clips to that path, then draws the image. Pixels outside the rounded area are discarded or filled with the background color.

Transparency support

PNG and WEBP output preserves transparent corners. JPG output fills corners with the selected background color since JPG cannot represent transparency.

Batch consistency

The same radius applies to all images in a batch. For images of different sizes, the visual rounding may appear different — larger images need larger radius values for equivalent visual effect.

How to round image corners online

Apply a custom corner radius and download the rounded image.

1. Drop one or more images into the tool.
2. Set the corner radius in pixels.
3. Pick a background color or keep transparency.
4. Download the rounded image or a ZIP for the batch.

Frequently asked questions