Center a String
Center every line of a string within a given width. 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 Center a String
- 1. Paste the lines to center. Enter one or more lines of text into the input pane. Each line is centered independently against the chosen width.
- 2. Set the width. Enter a width in characters, or leave it at 0 to automatically use the length of the longest line so every shorter line centers relative to it.
- 3. Copy the centered result. Copy the padded output and paste it wherever centered, monospace text is needed, such as a plain-text heading or a terminal banner.
When to use Center a String
Center a String pads every line of text with leading spaces so it appears centered within a given width. It is built for plain-text and monospace contexts where there is no CSS text-align to lean on.
- Centering a plain-text email heading. A plain-text email or README needs a title line visually centered above a longer subtitle, matching the width of the widest line in the block.
- Building a terminal splash banner. A CLI tool prints a short ASCII banner on startup and each line of the logo or title needs centering against a fixed terminal width like 80 columns.
- Formatting a monospace table caption. A caption above a plain-text table needs to sit centered over the table's width so the layout reads cleanly in a code block or fixed-width viewer.
- Aligning a multi-line signature block. A short multi-line quote or signature needs every line centered relative to the longest one, giving it a balanced, symmetrical shape in plain text.
Examples
Center a heading
Input
Title A longer subtitle
Output
Title A longer subtitle
About the Center a String tool
Center a String does its work locally, right in the browser. Center every line of a string within a given width. 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
Does Center a String cost anything?
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?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
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?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
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.