About Add Suffix Tool

This tool adds a custom suffix to the end of each line. Ideal for:

• File extension adding: Adding extensions to filenames
• Text formatting: Adding consistent endings
• Data transformation: Appending text to entries
• List formatting: Adding punctuation or markers

Specify a custom suffix and it will be added to the end of every line.

Features

• Add custom suffix to each line
• Customizable suffix text
• Works on all lines
• One-click copy to clipboard
• Instant processing

Example

Input:

file1
file2

Suffix: .txt

Output:

file1.txt
file2.txt