Try the Circle Crop tool now
Upload any image — instant circle crop, no signup.
Why crop an image into a circle?
Circle-cropped images are everywhere: profile pictures on Discord, Slack, GitHub, and Twitter; app icons on mobile devices; team member photos on company websites; and design elements in presentations and social media graphics. A round crop with a transparent background blends seamlessly into any layout.
Until now, making one required opening Photoshop, Figma, or a complex editor. ToolKnit’s Circle Crop tool does it in seconds — right in your browser.
How to use the Circle Crop tool
- Upload your image — drag and drop or click to browse. Supports JPG, PNG, WebP, BMP, and GIF.
- Position the circle — click and drag to move the circle overlay over the part of the image you want to keep.
- Adjust the size — use the slider (10%–100%) to control the circle diameter.
- Download — click “Download Circle PNG” to get a perfectly round image with transparent background.
The entire process takes under five seconds for most images.
How the circle crop works technically
When you click download, the tool creates an offscreen Canvas element sized to the circle’s diameter. It then applies a circular clip path using the Canvas API’s arc() method and draws the corresponding portion of your image inside the clip. The result is exported as a PNG — the only web format that supports transparency. Everything happens locally in your browser; no data is sent to any server.
Best practices for circle cropping
- Start with a square image — a 1:1 source image wastes no pixels. Use the Image Resizer first if needed.
- Center your subject — faces and logos should be near the center for the best circle crop result.
- Use high-resolution sources — the circle crop preserves original pixel quality. A 1000×1000 source gives a 1000px-diameter circle.
- Check the background — since the output is transparent PNG, any background outside the circle disappears automatically.
Circle crop vs. regular crop: when to use each
Use regular crop (the Crop Image tool) when you need a rectangular output with specific aspect ratios like 16:9 or 4:3. Use circle crop when you need a round shape — typically for avatars, icons, or design elements where the image must blend into a non-rectangular layout.
Privacy: your images stay on your device
Many online image editors upload your files to a server for processing. That means your personal photos, company logos, or confidential screenshots are transmitted over the internet. ToolKnit’s Circle Crop processes everything locally in your browser using the HTML5 Canvas API. No data is sent to any server, ever.
Frequently asked questions
How do I crop an image into a circle?
Upload your image to the ToolKnit Circle Crop tool. Drag to position the circle, adjust the size with the slider, then click Download to get a transparent PNG.
Is the circle crop tool free?
Yes, completely free. No signup, no watermarks, no limits.
Does circle crop upload my image to a server?
No. All processing happens locally in your browser using the HTML5 Canvas API. Your image never leaves your device.
What format does the circle crop export?
PNG with transparent background. The area outside the circle is fully transparent, making it perfect for avatars and overlays.
Can I resize the circle?
Yes. Use the size slider (10%–100%) to control the circle diameter. You can also drag the circle to reposition it on the image.
What image formats are supported?
JPG, PNG, WebP, BMP, and GIF. Any format your browser can display will work.
Crop any image into a circle
Upload → drag → download transparent circle PNG. Free, private, no signup.