Draw a Box Around Text

Put a neat frame around a message, a code comment, a README banner or a chat announcement. Choose from single, double, rounded, heavy and dashed box-drawing lines, plain ASCII for places that only handle basic characters, or stars and hashes. Add padding, blank lines, a title set into the top border and left, centre or right alignment. Wide characters such as Korean, Chinese, Japanese and emoji count as two columns, so the right edge lines up in monospace text.

How to use this tool

1. Type or paste one or more lines.
2. Pick a box style and, optionally, a title for the top border.
3. Set the alignment, inside spacing and a minimum width if you want a wider box.
4. Copy the box and paste it into a code block, terminal or plain-text message.

Formula

Inside width = max(longest line, minimum width, title + 3 − 2 × padding) · box width = inside width + 2 × padding + 2

Line widths are measured in monospace columns using Unicode East Asian Width: Hangul, CJK, full-width forms and emoji count as two, combining accents as zero, tabs as four spaces. Each line is padded with spaces to the inside width, then framed by the side characters. The box-drawing characters come from the Unicode Box Drawing block (U+2500–U+257F); the title sits after one border character with a space on each side.

Example

With the rounded style and one space of padding, the three sample lines become a box 30 columns wide: “Build passed ✅” is 15 columns because the emoji counts as two, and “배포 완료” is 9 columns. The longest line, “Deploy to staging at 14:00”, sets the inside width to 26.