Quick Start

  1. Visit HeronTool's Add Line Numbers tool.
  2. Paste or type your text into the input area.
  3. Choose the starting number (default 1), step (default 1), and separator (e.g., colon or period).
  4. Click "Add Line Numbers" – the processed text appears in the output box, ready to copy.

Removing Line Numbers

  • To remove existing line numbers, ensure each line starts with a number+separator format.
  • In the tool page, select the "Remove Line Numbers" mode (switch tabs in some versions).
  • The system auto-detects and strips the numbers, preserving the rest. If the format is irregular, first normalize it by adding line numbers, then remove.

Practical Tips

  • Code diffing: Add line numbers to two code snippets and compare line by line.
  • Document review: Number long documents for team references.
  • Custom separators: Use spaces or tabs to paste directly into tables or code editors.
  • Large text: HeronTool handles sizable inputs, but split huge files for faster processing.

FAQ

Q: How to undo line numbering?
A: Use "Remove Line Numbers" or copy the original text and reprocess.

Q: Can line numbers be non-English?
A: Numbers are digits only, but text content can be any language.

Q: Alignment issues with line numbers?
A: Use a monospaced font to view, or adjust the separator to multiple spaces.

Q: Can I start from a specific number?
A: Yes, set the starting number (e.g., 10) in the input field.

Thẻ
# Số dòng# Mã# Định dạng# Diff