Blockify a String
Fit a string into an N-by-M block of characters. 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 Blockify a String
- 1. Paste the string to fit. Enter the text you want reshaped into the input pane. Longer strings get wrapped and shorter ones get padded to fill the target block.
- 2. Set Columns and Rows. Choose how many characters wide (Columns) and how many lines tall (Rows) the resulting block should be. The tool wraps or pads your string to exactly fill that N-by-M grid.
- 3. Copy the block. Copy the fixed-size block of text and paste it wherever a rectangular, evenly sized chunk of characters is needed, like a fixed-width display or layout mockup.
When to use Blockify a String
Blockify a String reflows a string into a rectangular grid of a chosen width and height, wrapping or padding as needed. It is useful whenever you need text to occupy a predictable, fixed-size block rather than however many characters it happens to be.
- Mocking a fixed-width terminal display. You are prototyping a retro terminal UI and need sample text reflowed into an exact 40-by-10 character block to see how it will look before wiring up real rendering.
- Filling a label placeholder. A design mockup needs placeholder copy that fits a specific character grid exactly, so the layout doesn't shift once real content replaces it.
- Preparing ASCII art or banners. You are hand-crafting a text banner for a README or CLI splash screen and want the message reshaped into a specific rectangle before adding a border around it.
- Testing a fixed-size text buffer. You are debugging a system that reads a fixed number of rows and columns of characters, like an old-school display driver, and need a quick sample block of that exact size.
Examples
3x2 block
Input
abcdef
Output
abc def
About the Blockify a String tool
Blockify a String runs as plain JavaScript in your browser tab, with no server behind it. Fit a string into an N-by-M block of characters. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's String Tools section, 159 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with 2 settings, including Columns and Rows, and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Does Blockify 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.