String Repeater Repeat any text string a specified number of times with custom separator.
String Repeater
Repeat any text string a specified number of times with custom separator.
Enter Your Text to Repeat
Type or paste the text you want to repeat.
Set Repeat Count and Separator
Choose the repeat count and separator between repetitions.
Copy the Repeated Text
View the repeated text and copy it to your clipboard.
What Is String Repeater?
A string repeater is a tool that duplicates any given text a specified number of times, optionally with a custom separator between each repetition. Developers and testers use it to generate test data, such as creating repeated patterns or building placeholder content, solving the specific problem of having to manually duplicate text multiple times. For instance, when testing how systems handle repeated input, like repeat text online scenarios, a string repeater can save time by allowing users to duplicate text multiple times with ease.
What makes this tool different is its ability to accept custom separators, including newlines, commas, and spaces, which can be specified using escape sequences like \\n, \\t, or \\s. It also limits the repeat count to a safe range of 1 to 1000, preventing accidental excessive output. The tool's input field for specifying the separator is particularly useful, as it allows users to enter any custom text, giving them full control over the output format when they need to repeat string with separator.
The tool's implementation also ensures that the repeat count is always within a valid range, and it uses a callback function to process the input text, replacing escape sequences in the separator with their corresponding characters. This attention to detail makes it a reliable choice for tasks like generating test data or creating repeated patterns, effectively serving as a text multiplier tool to duplicate text multiple times.
Why Use String Repeater?
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Repeat text any number of times (up to 1000)
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Custom separator — newline, comma, space, tab, or any text
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Great for generating test data quickly
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Create repeated patterns for design or development
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Runs entirely in your browser with no upload or server delay
Common Use Cases
Test Data Generation
Create repeated strings for testing form inputs, database inserts, or API payloads.
Pattern Creation
Build repeated patterns for design mockups or text-based borders.
Load Testing
Stress-test application performance and input handling with large repeated text payloads.
Placeholder Content
Fill UI layouts and prototypes with repeated placeholder text.
Technical Guide
String repetition creates an array of the specified size using Array(n).fill(input) and joins the elements with the chosen separator. The separator string supports escape sequences: \n for newline, \t for tab, and \s for space, which are converted to their actual characters before joining. The repeat count is capped at 1000 to prevent browser memory issues with extremely large outputs. The implementation uses Array.fill() for memory efficiency rather than string concatenation, which would have O(n²) performance due to JavaScript's immutable strings.
Tips & Best Practices
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1Use \n as separator to put each repetition on its own line
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2Use comma separator for CSV-like output
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3Test database varchar limits by repeating a character to specific lengths
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4Create text dividers by repeating characters like "─" or "═"
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5The max repeat count of 1000 prevents browser memory issues
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📝 Text ToolsFrequently Asked Questions
Q What's the maximum repeat count?
Q Can I use special characters as separators?
Q Does it handle multi-line input?
Q Is the separator included at the end?
Q Can I repeat an empty string?
About This Tool
String Repeater is a free online tool by FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration or installation required.