Overview
Introduction
Generating repeated text, for test data, filler content, or a repeated visual pattern, is quick with the right tool instead of copy-pasting by hand.
It runs entirely client-side, so nothing you paste is ever uploaded to a server.
What Is String Repeater?
A repeater that duplicates your input text a chosen number of times, optionally joined by a separator between each copy.
It runs entirely client-side as part of this site's String Tools collection, so nothing you paste is ever uploaded to a server.
How String Repeater Works
The tool builds an array of `count` copies of the input and joins them with the given separator (empty by default).
The transformation happens synchronously in JavaScript the moment you type, with no network round trip involved.
When To Use String Repeater
Use it to generate repeated test data, a filler pattern, or a visual divider made of repeated characters.
It's a fast way to get the answer without opening a code editor, a REPL, or writing a one-off script just to check.
Often used alongside Text Joiner and String Unigram Generator.
Features
Advantages
- Supports an optional separator, not just plain concatenation.
- Simple, predictable output.
Limitations
- No support for randomizing or varying each repetition; every copy is identical.
Examples
Best Practices & Notes
Best Practices
- Leave the separator blank for simple concatenation, like a repeated visual divider character.
Developer Notes
The implementation is `Array(count).fill(input).join(separator)`, which handles a separator naturally by relying on Array.prototype.join() rather than a manual loop with conditional separator insertion.
String Repeater Use Cases
- Generating repeated test data for a script
- Creating a visual divider made of repeated characters
- Building filler text of a specific repeated pattern
Common Mistakes
- Expecting each repetition to vary; all copies are identical.
Tips
- Use a divider character with no separator to build a horizontal rule, like '-' repeated 40 times.