テキストリピーター

What a text repeater actually does

A text repeater takes a single string and stamps out as many copies as you ask for, optionally gluing them together with a separator and wrapping each copy in a prefix and suffix. That sounds trivial, but doing it by hand — copy, paste, copy, paste — is slow, error-prone, and impossible past a few dozen repetitions. This tool builds the whole block in one pass and updates the preview live as you type, so you can see the result before you copy it.

Under the hood the logic is simple and predictable: it reads your text, applies the prefix and suffix to each copy, repeats that unit the requested number of times, and joins the units with your chosen separator. Because the prefix and suffix are added per item rather than once at the ends, you can turn a single line into a structured list in one step.

A worked example

Say you need a numbered placeholder list. Put Sample item in the input, set the repeat count to 4, choose the Newline separator, and type - in the prefix field. The output becomes:

• - Sample item
• - Sample item
• - Sample item
• - Sample item

Switch the separator to Comma and the same four copies collapse onto one line as - Sample item, - Sample item, - Sample item, - Sample item. Add a suffix of ; and each copy gains a trailing semicolon — handy for generating quick test data or seed values.

The controls, and what each one is for

• Repeat count. Any whole number from 1 to 1000. Values outside that range are clamped, so you can't accidentally ask for a negative or runaway count.
• Separator. None, newline, comma, space, semicolon, or a custom string of your own — useful for delimiters like |, ---, or a tab.
• Prefix and suffix. Added to every single copy. Combine a prefix of " and a suffix of ", to build a quick array of quoted strings.
• Trim whitespace. On by default, this strips leading and trailing spaces from your input before repeating, so a stray space at the end of a pasted line doesn't multiply into the output.

The character counter under the preview reports the full output length, and for very large results the preview is truncated for performance while the complete text is still copied to your clipboard when you click Copy Output.

Real use cases

• Mock and seed data. Generate dozens of identical rows, list items, or JSON-ish entries to test how a layout or import handles bulk content.
• Filling templates. Quickly produce repeated form fields, table rows, or boilerplate lines you'll then tweak individually.
• CSV and delimited strings. Repeat a value with a comma or semicolon separator to build a one-line list for a spreadsheet or query.
• Spacing and emphasis. Designers and writers sometimes repeat a character or word — a row of dashes, a separator bar — to rough out spacing.
• Stress-testing inputs. Need a 500-character string to check a field's max length? Repeat a short token until you hit the size you want.

Common mistakes and how to avoid them

• Forgetting the separator adds no trailing copy. A separator sits between items, not after the last one. Four items joined by commas give three commas. If you need a trailing delimiter on every line, put it in the suffix instead.
• Expecting the prefix at the start only. The prefix repeats with every copy by design. If you want a single heading once, add it manually after copying.
• Leaving trim on when leading spaces matter. If your text intentionally starts or ends with spaces (for alignment), turn the trim checkbox off so they survive.
• Pasting from a rich-text source. Copying from a styled document can carry invisible characters. Paste into a plain field first if the output looks off.

Privacy

Everything runs locally in your browser. The text you enter is repeated, previewed, and copied entirely on your device — nothing is uploaded, logged, or stored on a server. You can disconnect from the internet and the tool still works, which is the simplest proof that your content never leaves the page.