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How to Add Rounded Corners to Any Image (In 3 Seconds)

Updated on Feb 20, 2026

Add beautiful rounded corners to any image online — no Photoshop needed. Adjust radius, pick individual corners, and download transparent PNGs instantly.

How to Add Rounded Corners to Any Image (In 3 Seconds) 1

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You know that subtle thing Apple does where every icon, every card, every UI element has those perfectly smooth rounded corners? There’s a reason it looks so good — sharp 90-degree edges feel aggressive. Rounded corners feel friendly. And now you can add them to any image in about 3 seconds. 🎨

The Round Corners tool on iotools.cloud lets you soften up any image with adjustable corner radius, individual corner control, and clean transparent PNG output. No Photoshop required. No account needed. Just upload, slide, download.

Why Rounded Corners Matter More Than You Think

Rounded corners aren’t just an aesthetic flex. Research actually shows our eyes process rounded shapes faster than sharp ones. They guide the eye inward toward the content instead of outward toward the edges. That’s why every modern design system — Material Design, Apple HIG, you name it — leans heavily on border-radius.

Whether you’re polishing a profile picture, designing app icons, creating thumbnails, or just making a screenshot look less like a raw screen grab, rounded corners add that instant “someone actually designed this” vibe. 💅

How It Works

The tool is dead simple:

Upload your image — drag and drop or click to browse
Adjust the radius — use the slider to control how rounded you want things (pixels or percentage)
Pick your corners — want only the top corners rounded? Just the bottom-left? Go wild, each corner is independently adjustable
Download as PNG — transparent background, ready to drop into any design

The transparent PNG output is clutch. It means you can layer the rounded image on top of any background — colored cards, gradient headers, presentation slides — and it just works.

5 Things You Can Round-Corner Right Now

1. Profile Pictures — Most platforms crop to circles, but rounded squares (like Discord avatars or Slack thumbnails) hit different. Stand out with a clean rounded-square profile pic.

2. App Icons — Designing a PWA or side project? iOS-style rounded icons are the standard. Get the look without opening Figma.

3. Screenshots — Raw screenshots in blog posts or docs look lazy. A subtle 12-20px border radius makes them look polished instantly.

4. Social Media Graphics — Rounded images in carousels and posts feel more premium. It’s the little details that make people stop scrolling.

5. Thumbnails — YouTube thumbnails, blog featured images, product cards. Rounded corners = instant polish. While you’re at it, grab your YouTube thumbnails with our YouTube Thumbnail Downloader. 🔥

Pro Tips

Use percentage mode for consistent results across different image sizes — 50% gives you a perfect circle/pill shape
Asymmetric corners can create cool design effects — round only the top corners for card-style headers
Pair with the Crop Image tool to get the perfect aspect ratio before rounding
Need to convert your image format first? We’ve got that too

Related Tools You’ll Love

🖼️ Crop Image — Resize and crop before rounding
🔄 Image Converter — Convert between PNG, JPG, WebP and more
📸 Compare Images — See before/after side by side
🔡 Image to Text Converter — Extract text from images with OCR
🎨 CSS Gradient Generator — Create beautiful gradient backgrounds for your rounded images

Sharp corners are so 2005. Go round your images at iotools.cloud/tool/round-corners and join the smooth side. ⚡