What is a photo matte?
A matte is the background a picture sits on when the picture is not the shape of the frame. Borrowed from picture framing, where the mount board around a print stops the image running to the edge, it solves the same problem on social media: your photo is 16:9, the feed wants 1:1 or 4:5, and rather than cutting the sides off you place the whole image on a background of the right shape. Nothing is lost - the framing you composed survives, and the matte fills what is left over.
This is the opposite of cropping, and it is the right choice in a specific set of cases: a wide landscape where the width is the point, a screenshot where the edges carry information, a product shot that has to show the whole object, or any image where cutting into it would remove something you cannot afford to lose. When the subject is central and the surroundings are incidental, a crop is better and gives the image more of the tile. Choosing between the two is the actual decision; this tool covers the first case.
Four things control how the matte looks. The background can be a solid colour, white, black, or a blurred and darkened copy of the image itself - the last is the one people recognise from Instagram, and it works because it fills the frame with the picture's own palette without you having to pick a colour. Padding sets how much breathing room sits between the image and the frame edge. A corner radius rounds the image, and an optional drop shadow lifts it off the background. Everything renders on a canvas in your browser at full output resolution, so the preview is the file - and the image is never uploaded.
How to put a photo on a square matte?
Add your image
Drop a file, click to browse, or paste from the clipboard. Any shape works - the wider or taller it is relative to the target, the more matte you will see.
Pick the output size
Choose the platform and placement you are posting to. Square and 4:5 portrait are the common ones for a feed; 9:16 covers Stories.
Choose the background
A blurred copy of your own image is the default and usually the best. Solid colour, white or black suit product shots and anything with a brand palette.
Adjust and download
Set the padding, round the corners, add a shadow if it helps, then download as PNG, JPEG or WebP.
Key Features
Nothing Gets Cropped
The image is fitted inside the frame rather than filled to it, so every pixel you composed survives to the post
Blurred Self-backdrop
Fills the frame with a blurred, darkened copy of your own image, overdrawn past the edges so the blur leaves no pale halo
Padding, Radius and Shadow
Control the breathing room, round the corners and lift the image off the background - all proportional, so they scale with the output
Every Platform Size
Fifteen presets across Instagram, Threads, Bluesky, X, LinkedIn, Pinterest and Open Graph
Frequently Asked Questions
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