Click the Copy button above and the left square bracket upper corner emoji ⎡ is on your clipboard instantly - free, no sign-up, no install, works on every device.
Ctrl + V in any text field.Command + V. You can also open the Character Viewer with Control + Command + Space and search for "left square bracket upper corner".⎡ (Unicode U+23A1) is the left square bracket upper corner emoji. People drop it into chat messages, Instagram and TikTok bios, captions, nicknames, Discord and documents to add a touch of square. Because it is plain text, it renders on every platform without images.