Remove Empty Lines

Input

36 graphemes36 code points36 bytes

Live result

first line
second line
third line

Good fit

Use this tool when

A copied list has gaps between items.
You want a compact block without blank rows.
You are preparing lines for another tool or import.

Keep the original

Avoid it when

Blank lines separate meaningful paragraphs you want to keep.
You only need to trim leading and trailing spaces.
The spacing itself carries structure, such as poetry.

Reviewed truth vectors

Examples that expose the edge cases

Input

first line


second line

third line

Output

first line
second line
third line

Consecutive blank rows are all removed.

Input

a
   
b

Output

a
b

Whitespace-only lines count as empty.

Input

keep
keep

Output

keep
keep

Non-empty lines and their order are preserved.

Transparent implementation

How it works

01
Normalize CRLF and CR to LF.
02
Split into lines and drop any line that is empty after trimming.
03
Join the remaining lines with single newlines.

Known limitations

What the result cannot promise

Whitespace-only lines are treated as empty and removed.

It does not merge lines or change their contents.

Trailing structure that relied on blank lines is lost.

Questions before copying

Frequently asked questions

Does it remove spaces inside a line?

No. It only removes lines that are empty or contain only whitespace. Use Remove Extra Spaces for within-line cleanup.

Are Windows line breaks handled?

Yes. CRLF and lone CR are normalized to LF before blank rows are removed.

Is the order changed?

No. Remaining lines keep their original order.

Experience, expertise & trust

How we verify this tool

GlyphSift Editorial — Text-engine authors & reviewers

The GlyphSift Editorial team designs the deterministic text engine, writes each tool's examples against real Unicode edge cases, and reviews every claim before a page becomes eligible for indexing. We build and test the software we document; we do not outsource the copy to generic content mills.

Each tool page is reviewed against the same six input classes the engine is tested with — ASCII, emoji, combining marks, non-Latin scripts, empty input, and 5,000-grapheme input — and cannot become eligible if it is only a parameter variation of another page.

Automated evidence

Tool-contract & coverage suite30 deterministic cases
tests/tools-30.test.mjs mirrors the ToolRunner dispatch and asserts every registered engineId returns the contracted output shape, plus a coverage guard so no tool silently drops characters.
Run in: node --test after a production build (vinext build)
Rendered-HTML suite12 deterministic cases
tests/rendered-html.test.mjs renders the deployed server bundle and asserts the Unicode-version manifest and each wave's tool markup are present in the server-rendered HTML.
Run in: node --test against the built dist/server bundle
Transform & cleanup suite21 deterministic cases
tests/transform-cleanup.test.mjs exercises each deterministic cleanup and transform action against whitespace, duplicate, ordering, casing, and HTML-to-text edge cases.
Run in: node --test, no network, no randomness

Standards this tool follows

UAX #29: Unicode Text Segmentation
Grapheme and word boundaries underpinning line and whitespace operations.
UAX #14: Unicode Line Breaking Algorithm
Line-break semantics behind hard-wrap repair.