Instagram Square Border Frame

Instagram's default post ratio is 1:1 square, but it also supports 4:5 portrait and 16:9 landscape. If you want to post a photo in its original aspect ratio within a square frame — without any cropping — adding a border on the top/bottom or left/right creates the classic letterboxed photo post look.

This style of posting — especially with white or black borders — is popular with photographers, artists, and brands who want to maintain image integrity while fitting within the square format. A consistent border width across all posts creates a professional gallery aesthetic.

Choose your border colour and width, and the tool adds the border and downloads the result. For Instagram, white borders at 60–120 px on a standard 1080-wide image creates the classic white-bordered look. No upload required.