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 Justify Text Tool

Justify text instantly by stretching the spaces between words so every line lines up evenly on both the left and right edges, just like justified text in Microsoft Word or a printed newspaper column. Set your target line width and each existing line is padded with extra spaces distributed evenly between words. All justification happens instantly in your browser—nothing is uploaded.

⚙️ Justify options
Each line is stretched to exactly this many characters by distributing extra spaces evenly between words (leftmost gaps get the extra space first). Lines with 0 or 1 words, blank lines, or lines already at or beyond this width are left unchanged.

Justify Text Tool

The Justify Text Tool lets you justify text online so every line aligns perfectly on both the left and right edges—exactly like the justified text alignment used in Microsoft Word, InDesign, or printed newspaper columns. Instead of rewrapping your paragraphs, the tool takes each existing line exactly as you typed it and stretches the spacing between words until the line reaches your chosen width.

⭐ What Does This Tool Do?

  • Justifies each line of text independently, without rewrapping words across lines
  • Distributes extra spaces evenly between words, with leftover spaces assigned to the leftmost gaps first
  • Lets you set a custom target line width from 20 to 200 characters
  • Leaves blank lines, single-word lines, and lines already at or beyond the target width unchanged
  • Updates the justified output instantly as you type

🔎 How the Justification Algorithm Works

This is the same word-spacing logic used in classic "text justification" algorithms (similar to LeetCode's text justification problem). For every line:

  1. The line is split into words on whitespace.
  2. The total number of spaces required to reach the target width is calculated.
  3. Those spaces are divided as evenly as possible across the gaps between words.
  4. If the spaces don't divide evenly, the leftmost gaps receive one extra space each until the remainder is used up.

Example (line width = 20):

Input:  This is an example
Output: This  is  an example

Example (line width = 24):

Input:  Hello world foo
Output: Hello    world    foo

⚙️ Options Explained

Line width: The exact character count each eligible line will be stretched to, from 20 up to 200. Lines shorter than this width are justified; lines already at or past this width, blank lines, and lines with only one word are left unchanged, since there are no gaps to stretch.

⭐ Common Use Cases

  • Document formatting: Create justified paragraphs for print-style layouts, reports, or newsletters
  • Monospace output: Align text for terminal output, code comments, or fixed-width displays
  • ASCII art and tables: Produce evenly aligned text blocks for plain-text documents
  • Typesetting practice: Study or replicate the justified alignment used in word processors and desktop publishing software

⚠️ Important Notes

  • Lines are never rewrapped or merged—only the spacing between existing words on a line is adjusted
  • Lines with fewer than two words cannot be justified since there is no gap to stretch
  • All processing happens entirely in your browser; no text is uploaded to any server

This tool is also known as

  • justify text generator
  • text justification tool
  • align text both sides
  • stretch text to width
  • word spacing aligner

Frequently Asked Questions

It takes each line of your text and stretches the spacing between words so the line's total length matches your chosen target width, producing text that is aligned on both the left and right edges, just like justified paragraphs in a word processor.

No. Each existing line is justified exactly as it stands—words are never moved to a different line. Only the spacing between words on that same line is adjusted to reach the target width.

Extra spaces are divided as evenly as possible across all the gaps between words. If the spaces don't divide evenly, the leftmost gaps receive one extra space each until the remainder is used up, matching the classic text-justification algorithm.

Lines with zero or one word are left unchanged, since there is no gap between words to stretch. The line is output exactly as entered.

Blank lines are preserved as blank lines in the output. They are never padded or altered.

Lines that are already at or beyond the target width are left unchanged, since the tool only stretches lines to reach a width—it never removes characters or rewraps text to shorten a line.

You can set any width from 20 to 200 characters. 80 characters is a common default used for terminal output, plain-text documents, and monospace code comments, but you can adjust it to match your own formatting needs.

Yes. The output textarea uses a monospace font so you can visually verify that every justified line lines up to the exact same width, which is ideal for terminal text, code comments, and ASCII-style layouts.

No. All justification happens entirely in your browser using JavaScript. Your text is never sent to any server, stored, or shared.

Yes. The justified output updates live as you type or paste text, and whenever you change the line width setting.

Yes. Each line of a multi-line input is justified independently, so you can paste multiple paragraphs or lists and every eligible line will be aligned to the same target width.

Yes, the Justify Text Tool is completely free, with no sign-up, no limits, and no watermarks added to your output.

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