The Add Line Numbers Online Tool allows you to quickly add line numbers to each line of your text. Simply paste your text into the input area and select your preferred line number format. Choose whether to include only the number, number with a colon, number with a dot, or number with a tab. You can also choose whether to add a space after the line number. Additionally, you can add custom text before and after the line number to suit your specific needs. Click the "Add Line Numbers" button, and the tool will process your text accordingly. This is particularly useful for reference purposes or when reviewing code, scripts, or any text where line numbering is helpful.