Add Line Prefix/Suffix
Add specified prefix or suffix to each line start or end
Tool Guide
About This Tool
The online tool for adding line prefixes/suffixes is built for data cleaning, copy processing, and programmers editing configuration files. It supports batch appending and filling of your custom strings to the beginning and end of every line in massive amounts of text with one click.
Core Features
- Dual append modes: Supports setting a line prefix and a line suffix at the same time, wrapping tens of thousands of lines of lists, SQL statements, or URLs in seconds.
- Smart blank-line skipping: A built-in advanced toggle lets you freely choose whether to ignore blank lines in the text, preventing useless characters from being appended to invalid lines.
- Smooth high-throughput efficiency: Based on pure in-browser memory stream processing, with no limit on data size, so even huge texts are processed instantly on your device.
How to Use
- Copy and paste the raw text you want to process (such as a column of phone numbers, emails, or keywords) into the input box above.
- Set the prefix string to add at the beginning of each line (such as `'`) and the suffix string to add at the end of each line (such as `',`).
- Click "Add Prefix/Suffix," and the processed text will appear instantly below—just copy it with one click to use.