Will the rounded corners have a transparent background?

Yes. The output is a PNG file with transparency in the clipped corner areas, so you can place it on any background seamlessly.

Can I make a perfectly circular image?

Yes. Set the border radius to half the image's width (or height, for square images). The tool will clip the image into a perfect circle.

Does adding rounded corners reduce image quality?

No. The image pixels inside the rounded area remain untouched. Only the corner pixels outside the radius are clipped to transparent.

How to Add Rounded Corners to an Image

3 min readImage

Rounded corners give images a softer, more polished look that fits modern design aesthetics. They are widely used in app screenshots, presentation slides, blog graphics, and social media posts. Instead of wrestling with image editors, you can add perfectly rounded corners in seconds with a browser-based tool.

Quick Steps

1
Open the tool
Go to Add Rounded Corners on Toolin.
2
Upload image
Drop your image file.
3
Set radius
Adjust the corner radius with the slider.
4
Preview
See the rounded result in real time.
5
Download PNG
Save the image with transparent rounded corners.

Rounded Corners

Add rounded corners to images

Open Tool

When Rounded Corners Improve Your Design

Sharp 90-degree corners can feel harsh, especially when an image is placed on a soft or colorful background. Rounded corners create visual harmony by mimicking the shapes we see in modern UI elements like buttons, cards, and app icons. They also help direct the viewer's eye inward toward the content of the image rather than its edges. Designers use rounded corners extensively in pitch decks, product marketing, and app store screenshots.

Common Border Radius Values

8-12 px — Subtle rounding. Clean and professional, commonly used in web cards and thumbnails.
16-24 px — Moderate rounding. Popular for blog post images and marketing materials.
32-48 px — Strong rounding. Used in app icon mockups and stylized graphics.
Fully circular — Setting the radius to half the image width creates a circle, perfect for profile pictures.

Add Rounded Corners with Toolin

Open the Add Rounded Corners tool

Navigate to the Rounded Corners tool on Toolin.

Upload your image

Drag and drop a JPEG, PNG, or WebP file.

Set the border radius

Use the slider or type a pixel value to control how rounded the corners are. The preview updates in real time.

Download the result

The output is a PNG with a transparent background where the corners have been clipped. Save it and use it anywhere.

Design Tips

Match the corner radius to other rounded elements in your design for visual consistency.
Use a transparent background (PNG) if you plan to place the rounded image over colored or textured surfaces.
For app store screenshots, use a radius that mirrors the device's actual screen corners for a realistic look.
Keep the radius proportional to the image size — a 12 px radius looks right on a 400 px image but barely noticeable on a 2000 px one.

Try Rounded Corners Now — Free, No Sign-up

Frequently Asked Questions

Will the rounded corners have a transparent background?: Yes. The output is a PNG file with transparency in the clipped corner areas, so you can place it on any background seamlessly.
Can I make a perfectly circular image?: Yes. Set the border radius to half the image's width (or height, for square images). The tool will clip the image into a perfect circle.
Does adding rounded corners reduce image quality?: No. The image pixels inside the rounded area remain untouched. Only the corner pixels outside the radius are clipped to transparent.