Edit
Add a border or change the canvas
Pad an image, put a border on it, round its corners, crop it to a circle for an avatar, or grow the canvas to a square for a marketplace listing. Squaring grows the shorter side rather than cropping the longer one, so nothing is thrown away. Rounded corners and circles work by removing the pixels outside the shape rather than painting over them, which means they are genuinely transparent - so save as PNG or WebP if you want them to stay that way. Choose JPEG and the tool tells you the corners will be filled in before you download, rather than after.
How to add a border or change the canvas
- Drop in an image, or a folder to give the same treatment.
- Add padding, a border, rounded corners or a circular crop.
- Square the canvas if you are preparing a listing image.
- Download the result, or the whole set as a ZIP.
Supported formats
This tool accepts JPG, PNG, WebP, GIF, BMP and AVIF files. Everything is decoded by your own browser, so the formats available depend on what your browser can open - which for HEIC in particular varies between Safari and other browsers.
Because the image is rebuilt from raw pixels, EXIF metadata such as camera details, timestamps and GPS coordinates does not carry into the result. Orientation is applied to the pixels first, so photographs stay the right way up. Embedded colour profiles are also dropped and the output is saved as sRGB, which can shift colours slightly in wide-gamut photographs. Animated files are refused rather than being flattened to a single frame.
Frequently asked questions
Why does squaring not crop my image?
Because cropping to a square throws away part of the picture, and most of the time the reason you need a square is a listing page, not a composition choice. This grows the shorter side and centres the image on the new canvas, so everything you photographed is still there. If you do want a square crop, the crop tool will do it.
Will the rounded corners be transparent?
In PNG and WebP, yes - the corners are cut away rather than painted, so the image composites correctly on any background. JPEG has no transparency at all, so the corners are filled with your chosen background colour instead. The tool says which is going to happen before you download.
Why is the border measured as a percentage?
So that one setting works across a set of images at different sizes. A 20-pixel border is a hairline on a 6000-pixel photo and a slab on a thumbnail; a percentage of the shorter edge looks the same on both.
Does adding a border make the file bigger?
The canvas gets bigger, so there are more pixels to store - but a flat, single-colour border compresses to almost nothing in every format here. Padding an image usually costs a fraction of a percent of the file size.
Is my image uploaded?
No. The canvas is built and the image drawn onto it by your own browser, on your own device, and a content security policy the browser enforces stops this page sending your image to another domain. Padding, borders and rounded corners are all drawn locally, so this tool would keep working with the network switched off after the page had loaded.
Related tools
- Watermark ImagePut your name or a copyright line onto a photo, tiled or in a corner.
- Image CropperCrop images to any area or a fixed aspect ratio in your browser.
- E-commerce Product ImageSquare a product photo, size it for a storefront and get it under a sensible weight.
- Rotate ImageTurn a photo 90, 180 or 270 degrees, or mirror it.
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