About Replace First N Characters Tool

This tool replaces the first N characters of each line with a custom string. Perfect for:

• Text formatting: Adding or changing line prefixes
• Data transformation: Modifying fixed-width data
• Bulk editing: Changing the start of multiple lines
• Template processing: Replacing placeholders

Specify the number of characters and the replacement string.

Features

• Replace first N characters per line
• Custom replacement string
• Preserves remaining content
• Works on all lines
• One-click copy to clipboard