Line Numberer & Prefix/Suffix Adder
Prepend sequential numbers (1, 2 or 01, 02), roman numerals, bullet points, HTML tags, or custom suffixes to every line of text. Effortlessly format lists and code blocks in seconds.
Raw Lines Input
Formatted Result
What is a Line Numberer & Prefix/Suffix Tool?
A Line Numberer & Prefix/Suffix Tool is an automated text formatting utility that prepends incremental numerical indices, markdown task boxes, bullet symbols, or custom tags to the beginning of each line, and appends custom delimiters (such as commas or closing tags) to the end. It eliminates repetitive manual editing when structuring data lists, preparing SQL insert values, generating HTML lists, or citing code excerpts.
Key Capabilities & Features
Multiple Numbering Styles
Decimal (1, 2, 3), zero-padded (01, 02), parentheses 1), brackets [1], and classical Roman numerals (I, II, III).
Simultaneous Prefix & Suffix Wrapping
Wrap every line in quotation marks ("line",) or HTML tags (<li>line</li>) in one pass.
Smart Blank Line Handling
Automatically skip empty lines so paragraph breaks don't increment line numbering artificially.
100% Client-Side Privacy
Your code excerpts and confidential documents process in local memory without leaving your web browser.
How to Add Line Numbers and Prefixes
- Paste List: Enter your text list into the left pane.
- Select Numbering & Prefix: Pick a style (such as zero-padded
01.) or add custom prefix/suffix tokens. - Copy: Click "Copy Result" to save the formatted list.
Frequently Asked Questions (FAQ)
What is zero-padding and why is it useful?
Zero-padding prepends leading zeroes to numbers (e.g. 01, 02... 10) so all line index labels share identical character widths. This ensures text remains cleanly aligned in monospaced code editors and file names.