Justify a String
Stretch each line so it aligns to both the left and right margins. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Justify a String
- 1. Paste your text. Enter the lines you want aligned into the input pane. Each line is stretched independently to fill the target width.
- 2. Set the target width. Enter a value in Width, or leave it at 0 to justify every line to the length of the longest line already present.
- 3. Read how spacing is added. Extra space is inserted between words on each line so the first character sits at the left margin and the last character sits at the right margin, just like justified newspaper columns.
- 4. Copy the justified text. Copy the result from the output pane into a monospace layout, like a terminal display or a plain-text document, where aligned edges matter.
When to use Justify a String
Justify a String stretches each line of text with extra inter-word spacing so both the left and right edges line up, the same effect as newspaper column justification. Reach for it when a plain-text layout needs even margins on both sides rather than just the left.
- Formatting a plain-text table column. You're building a report in a monospace font and want each row's text to fill the column width evenly on both sides, rather than leaving ragged right edges.
- Recreating a print-style layout in plain text. A retro terminal application wants text blocks to look like justified newspaper columns. Justifying each paragraph line gives that even, printed appearance.
- Aligning ASCII art or a text banner. A banner made of plain text lines needs both edges flush for a clean rectangular block. Justifying each line to a fixed width produces that even frame.
- Matching a fixed-width legacy report format. An old reporting system expects lines justified to exactly 80 characters. Setting Width to 80 reproduces that format from freshly generated text.
Examples
Full justify
Input
the quick fox
Output
the quick fox
About the Justify a String tool
Justify a String does its work locally, right in the browser. Stretch each line so it aligns to both the left and right margins. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the String Tools collection on EditSafely, a set of 159 small, focused String utilities that share the same instant, private workspace.
You can shape the output with the Width (0 = longest line) setting, and the result refreshes the moment you change it. A worked example further down the page shows exactly what the tool produces for a real input.
Running locally also makes the tool fast and dependable: results appear as you type or drop a file, there is no server outage that can take it down mid-task, and confidential data can be processed without a second thought.
Frequently asked questions
Is Justify a String free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.