Circle diameter
D = c
The largest centered square is kept.
Round image and rounded corners
Create a round profile picture, a thumbnail with rounded corners or a framed image: set the rounding and border, then download a transparent PNG.
- Export
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How does this tool work?
A team photo as a round thumbnail, an avatar, a screenshot with softened corners for a presentation: these shapes take seconds to make. The tool crops the image into a circle or rounds its corners, adds a border in any color if needed, and makes everything outside the shape transparent.
With the "Circle" shape, the tool keeps the largest centered square in the image, then fits a disc inside it. A 1200 × 800 px photo therefore gives a circle 800 px in diameter. To choose which part is kept yourself, first crop the image to a square centered on the face or logo, then apply the circle.
With the "Rounded corners" shape, the image keeps its dimensions and only the corners are softened. Rounding is expressed as a percentage of the shorter side: 5 to 10% gives a subtle corner, 25% a card or button look, and 50% turns a square into a circle and a rectangle into a pill.
The border is drawn inside the shape: the image does not grow, so your layout holds no surprises. Its thickness is also set as a percentage of the shorter side, keeping the same visual proportion whatever the image size.
Around the shape, the cut-off corners are transparent by default and the image is saved as PNG, or WebP if you choose it. If you prefer a solid background, for a printed document for example, turn off transparency and pick a color: that is also what happens automatically with JPEG, a format without transparency.
How to use this tool
Upload the image
Photo, logo or screenshot in PNG, JPEG or WebP.
Crop if needed
For a circle, frame a square centered on the subject with the Crop tab.
Choose the shape and border
Circle or rounded corners, rounding, border thickness and color: the preview follows every setting.
Apply and download
Keep the background transparent for a PNG, or choose a background color.
The measurements used
For an image of width W and height H, with c = min(W, H):
Rounded corner radius
r = rounding % × c
Capped at 50%: beyond that, the curves would overlap.
Border thickness
t = border % × c
Drawn inside the shape.
- c
- shorter side of the image, in pixels
- p_r
- chosen rounding, as a fraction (25% = 0.25)
- p_b
- chosen border, as a fraction (5% = 0.05)
Use cases
Profile pictures
Prepare a round avatar for an email signature, a team page or a forum that does not round images itself.
Presentations and documents
Soften the corners of screenshots and photos for a more polished look in a slide deck.
Websites and interfaces
Create thumbnails, cards or buttons with rounded corners, ready to drop into a page.
Social media and brands
Frame a logo with a border in brand colors for a post or a badge.
Examples
Round avatar
The central square is kept; the thin white border makes the face stand out on a dark background.
Input
1200 × 1600 px portrait, circle shape, 3% white borderResult
1200 px round PNGScreenshot for a presentation
A slight rounding gives the screenshot the look of an app window.
Input
1920 × 1080 px screenshot, rounded corners 4%Result
Same dimensions, softened cornersProduct thumbnail
The solid background avoids transparent corners if the thumbnail is printed or sent as a JPEG.
Input
Square photo, rounded corners 20%, transparent background off, background #F5F5F5Result
Rounded card on a light gray backgroundPill-shaped button
With half the shorter side as the radius, both ends of the rectangle become semicircles.
Input
1200 × 300 px banner, rounded corners 50%Result
Banner with fully rounded endsTips and best practices
- For a portrait, leave some space above the head in the cropped square: the circle cuts deeper into the corners.
- Keep transparency and the PNG format if the image will sit on a colored background: the cut corners will take on the color behind them.
- A light border on a dark background, or a dark one on a light background, is often enough to make a round photo pop.
- For an interface, use the same rounding percentage on every thumbnail for consistency.
- If a platform already shows profile pictures in a circle, a square file is enough: no need to round it yourself.
Sources and references
Frequently asked questions
How do I make a photo round?
Upload the photo, open the Frame tab, choose the "Circle" shape, add a border if needed, apply, then download the PNG. To choose which part is kept, first crop a square centered on the subject.
Why are the corners of my image transparent?
Outside the shape the image is empty by default, and PNG can store that emptiness as transparency. The image then sits cleanly on any background. Turn off transparency to fill the corners with a color.
Which rounding value should I choose?
Around 5% for a subtle corner, 15 to 25% for a card effect, 50% for a circle from a square or a pill from a rectangle. The percentage refers to the shorter side of the image.
Does the border make the image bigger?
No. It is drawn inside the shape, so the dimensions stay those of the original image, or of the square for a circle.
What size for a round profile picture?
Platforms generally recommend a square of 320 to 800 px. For all-purpose use, a circle of 800 to 1000 px stays sharp everywhere and can be scaled down later.
Can I get a JPEG?
Yes, but JPEG does not support transparency: the corners will be filled with white or the background color you chose. To keep transparent corners, export as PNG or WebP.
Does my image stay private?
Yes. The cropping, rounding and border are computed in your browser; the photo is never uploaded to a server.
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