為文字套上邊框，支援單線、雙線、圓角、粗線、星號、井號與純 ASCII 多種樣式。
Everything runs locally in your browser — nothing is uploaded, safe for sensitive data.
Input accepts plain text, CSV/TSV tables, JSON, XML, YAML or source code depending on the tool.
Options appear above the boxes: mode buttons, dropdowns, checkboxes and parameter fields.
Results update as you type; use Copy to put them on the clipboard.
Tip: combine with other HeronTool converters to chain formats (e.g. CSV → JSON → SQL).
