Remove all empty and blank lines from text.
Remove all empty, blank, and whitespace-only lines from text. Perfect for cleaning up code, compacting text files, removing extra spacing, and formatting text data. Preserves content lines while eliminating unnecessary blank lines.
Remove all empty and blank lines from text.
Line 1 Line 2 Line 3 Line 4
Empty line removal eliminates lines containing only whitespace or nothing at all. Blank lines (completely empty), whitespace-only lines (spaces/tabs), and newline-only lines all get filtered out, leaving only content-bearing lines.
Line detection splits text on newlines, evaluates each line for content, and filters empty ones. Text 'line1\n\nline2\n \nline3' becomes 'line1\nline2\nline3' with all blank lines removed.
Whitespace-only lines are treated as empty: lines with just spaces, tabs, or mixed whitespace get removed equally. This prevents invisible blank lines from remaining when they serve no formatting purpose.
Code cleanup removes excessive blank lines from source files. Multiple consecutive blank lines reduce readability—removing them creates denser, more professional code without losing logical structure.
Data processing requires compact formats without blank lines. CSV files, log analysis, and list processing break when empty lines appear—removal ensures continuous data streams for parsing.
File size reduction eliminates whitespace-only lines that waste storage. Large text files with formatting gaps benefit from blank line removal for smaller file sizes and faster transmission.
Text comparison and diffing work better without blank lines. Removing empties before comparison prevents false differences caused by varying amounts of vertical whitespace between versions.
Meaningful blank lines get removed unintentionally. Paragraph separators, section dividers, and logical grouping gaps disappear, creating walls of text without visual breaks for human readers.
Code formatting conventions require blank lines. Style guides mandate empty lines between functions, classes, or logical blocks—removing them violates standards and reduces code navigability.
Mixed content handling is ambiguous. Should a line with only punctuation (e.g., '---') be considered empty? Definition of empty varies—strict (nothing) vs. lenient (only whitespace) vs. semantic (no meaningful content).
Data integrity for positional formats breaks. If line numbers matter (line 5 is always the timestamp), removing empties shifts positions and invalidates parsing logic expecting fixed line locations.
Preserve formatting for human-readable content: Keep paragraph breaks in prose, section separators in documentation. Remove blank lines only in machine-processed data or overly-spaced code.
Define empty consistently: Decide whether empty means zero characters, only whitespace, or only specific whitespace types. Document the definition and apply it uniformly.
Limit removal to excessive blanks: Instead of removing all empty lines, collapse consecutive blanks to single empties. This maintains logical breaks while eliminating excessive spacing.
Verify output format after removal: Check that result is still valid for its purpose—CSV parsers, code compilers, markdown renderers. Some formats require specific blank line patterns.
