Rounded Corners

1What is Rounded Corners?

Apply rounded corners to any image.

Rounded Corners is part of the Pixly suite of professional image tools. It runs entirely in your browser with no software to install, requires no design experience, and delivers results in seconds — whether you are processing one image or an entire batch. Every operation is applied on the full-quality decoded image, so the output preserves the fidelity of your original file.

2How does Rounded Corners work?

Corner rounding applies an anti-aliased alpha mask with the radius you choose. The mask is computed analytically per corner (super-sampled for smooth edges) and multiplied into the image's alpha channel, so corners become genuinely transparent rather than painted with a fake background color. The result composites perfectly on any website, slide or app.

3How to use Rounded Corners — step by step

Using Rounded Corners takes less than a minute from upload to download. The tool card at the top of this page is the live editor — everything below explains exactly what happens behind the scenes.

1. Step 1. Upload an image.
2. Step 2. Drag the radius slider.
3. Step 3. Download the rounded image.

4Key features at a glance

• Adjustable corner radius
• Transparent output

Each feature is designed to solve a specific, real-world problem — from page-speed optimization for developers to platform-perfect sizes for social media managers. Together they make Rounded Corners a dependable part of any image workflow.

5Pro tips for the best results

A few professional habits will get noticeably better output from Rounded Corners:

• Radius 20–40 matches modern UI card styling.
• Use PNG or WEBP output — JPEG cannot store the transparent corners.

6Who uses Rounded Corners?

Web developers rely on it to keep pages fast — properly prepared images are the single biggest performance win most sites can make. Designers use it for the last mile of production work: format handoffs, corner rounding, frames and exports that match the platform they are shipping to.

E-commerce teams process entire product catalogs to consistent sizes and weights, which measurably improves load speed and conversion. Content creators and social media managers depend on it for daily platform-ready assets, while students and office teams use it to shrink scans and photos so they fit comfortably inside emails, forms and presentations.

7Supported image formats

Rounded Corners works with all widely used image formats. Each format has strengths that make it the right choice for a particular job:

8Privacy & security

Your images stay yours. Files are transferred over an encrypted connection, processed on secure servers, and automatically deleted within 24 hours — nothing is shared with third parties and nothing is used for training or advertising. Because Pixly works in the browser, you can also process images from any device without installing software or creating an account.

9Frequently asked questions