MakerFlowTools
Free client-side suite

Matte Generator

Social Media

Fit a whole photo into a square or portrait post by adding a blurred, solid or gradient background — without cropping anything away.

Runs in your browser•Zero cloud uploads / Files stay on device•No account required

Drop your file here, or browse files

or paste screenshot / image withCtrl + V
image/*
Output
Aspect ratio
Width
Matte
Supported File Formats
JPGPNGWebP
Optimized For Platforms
instagramdesign

How it works

1Drop in a photo that does not fit the shape you need.
2Pick the aspect ratio you are posting to.
3Choose a matte — blurred uses the photo itself, gradient uses its average colour.
4Adjust the border thickness, then download.

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