Remove Blank Lines Online

Remove blank lines, extra line breaks, and stray whitespace. Input on the left, live preview on the right—all processing runs locally in your browser.

Input

0 lines0 / 500,000

Output

0 lines0 characters

Collapses multiple blank lines in a row into one—good for paragraph spacing.

Keep at mostblank lines in a row

When on, blank-line merge/remove above is ignored. Enter 0 to remove every consecutive blank line.

Treat space/tab-only lines as blank

Lines that contain only spaces, tabs, full-width spaces, or zero-width characters are treated as blank lines.

Trim each line

Remove leading spaces

Remove trailing spaces

Convert tabs to spaces

How to use

Overview

Copied text from Word, PDF, the web, or AI often has extra blank lines, long runs of empties, or padding spaces at line edges. This tool processes everything locally: Input on the left, Output on the right, updated in real time.

Beyond merge / remove-all / keep, you can cap consecutive blank lines, detect pseudo blanks, and trim whitespace—useful for writing, SEO lists, scripts, and pre-CSV cleanup.

Quick start

Paste or type; optional Sample
Choose a blank-line mode, or enable Keep at most … blank lines in a row (see table)
Toggle pseudo-blank and whitespace options as needed
Copy or Download TXT from output
Clear text for content only; Reset for defaults + clear

Blank-line modes

Setting	Effect	Typical use
Merge consecutive blanks (default)	Each run → 1 blank line	AI drafts, general cleanup
Remove all blank lines	No blank lines anywhere	Tight lists, some code/CSV
Keep blank lines	No blank-line deletion	Whitespace-only cleanup
Keep at most 0	Each run → 0 lines	Strip paragraph gaps by run
Keep at most 1	Each run → ≤1 line	Same idea as merge, explicit
Keep at most 2+	Each run → ≤N lines	Double spacing between sections

When Keep at most … is enabled, the merge/remove/keep control above is inactive until you turn it off.

Whitespace options

Treat space/tab-only lines as blank
Trim each line (both ends; disables separate leading/trailing toggles)
Remove leading / Remove trailing spaces
Convert tabs to spaces

Common scenarios

AI / ChatGPT output: merge + pseudo blanks
Word / PDF paste: remove all + trim each line
Blog / meta lists: keep at most 1 blank line per run
Long-form sections: keep at most 2
Before CSV: drop blanks and trim cell padding

FAQ

Q: What does this tool do?: A: It cleans up extra line breaks and line-edge whitespace in your text. Paste on the left, preview on the right. You can merge consecutive blank lines, remove every blank line, or set a custom cap on how many blank lines stay in each run. Processing stays in your browser—no sign-up.
Q: How do I use it?: A: 1. Paste or type in Input (try Sample for a demo)
2. Pick Merge consecutive blanks, Remove all blank lines, or Keep blank lines; for fixed paragraph spacing, enable Keep at most … blank lines in a row and enter a number
3. Copy or Download TXT from Output; use Reset to restore defaults
Optional: treat space-only lines as blank, trim line edges, convert tabs to spaces. Results update as you type.
Q: Merge consecutive blanks vs remove all blank lines?: A: Merge (default): each run of consecutive blank lines becomes one blank line—good for paragraph gaps. Remove all: deletes every blank line in the file. They do not apply together. If Keep at most … blank lines in a row is on, that number overrides the merge/remove/keep choice above.
Q: What do 0, 1, 2, 3 mean in “keep at most N blank lines in a row”?: A: The number applies to each run of consecutive blank lines (not the whole document):
0: drop the entire run (no blank lines left in that run)
1: keep at most one blank line per run (similar to merge)
2: keep at most two (double spacing between sections)
3+: same idea; if the run is already shorter than N, nothing is added—existing blanks stay
Any non-negative integer is allowed. An empty field is treated as 1.
Q: What if the text has fewer blank lines than my limit?: A: Lines are never added. One blank line in a run stays one blank line even if you enter 3. Trimming only happens when a run is longer than your limit.
Q: What is a pseudo blank line?: A: A line that contains only spaces, tabs, full-width spaces, or zero-width characters. When Treat space/tab-only lines as blank is on, those lines follow the same rules as empty lines.
Q: Is my text uploaded?: A: No. Processing runs in your browser. Options may be stored in localStorage for convenience; input text is kept in sessionStorage for this tab only and cleared when you close the tab. Use Clear text or Reset, or clear site data in your browser.
Q: Size limits and when is copy disabled?: A: Up to 500,000 characters per run. Copy and Download are disabled when output is empty or only whitespace (under the pseudo-blank rules).
Q: Clear text vs Reset?: A: Clear text (input area) removes input and output only. Reset (output area) also restores default options.
Q: Mobile and pricing?: A: Works on phones (stacked layout, bottom action bar). Free, no account required.