Tools you might need next
Sort lines alphabetically or numerically in any text list. Free online line sorter for cleaning datasets, organizing names, and preparing sorted output.
Add line numbers to text automatically. Prefix each row with sequential indices for code snippets, documentation, legal excerpts, and shared references.
Remove duplicate lines from text while keeping unique rows. Clean email lists, URLs, log entries, and data files quickly with this free online tool.
An empty line contains no characters (zero-length) or only whitespace (spaces, tabs). Options include removing all empty lines, collapsing consecutive empty lines to one, or removing only leading/trailing blank lines.
Empty: line.trim().length === 0; Modes: remove_all, collapse_consecutive, trim_edgesLines containing only spaces or tabs appear empty visually but have content. Most use cases should treat whitespace-only lines as empty. Option to preserve lines with intentional whitespace (e.g., indentation-sensitive formats).
Updated: July 2026
Remove excessive blank lines from text copied from a web page or PDF.
→ Text with at most one blank line between paragraphs
Strip all empty lines from source code before further processing.
→ Compact code with no empty lines
Blank lines in code serve as logical separators between functions and blocks. Collapse consecutive blanks to single instead of removing all, to preserve readability.
A line with just \r may appear empty on one OS but not another. Normalize line endings first, then check for empty lines to ensure consistent behavior across platforms.
Strip blank and whitespace-only lines from pasted text. Tighten prose, config files, and copied data for cleaner exports without manual editing. It applies the empty line detection (Empty: line.trim().length === 0; Modes: remove_all, collapse_consecutive, trim_edges). For example: clean up pasted content — Remove excessive blank lines from text copied from a web page or PDF.