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InsertLinebreaks: Split long strings—Wolfram Documentation

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InsertLinebreaks["string"]

inserts newline characters into string to make a string in which no line is longer than 78 characters.

InsertLinebreaks["string",n]

inserts newline characters to make no line longer than n characters.

Details
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Examples  
Basic Examples  
Scope  
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InsertLinebreaks

InsertLinebreaks["string"]

inserts newline characters into string to make a string in which no line is longer than 78 characters.

InsertLinebreaks["string",n]

inserts newline characters to make no line longer than n characters.

Details

  • InsertLinebreaks inserts line breaks into a string to ensure lines do not exceed a specified width, making long text easier to read or display.
  • InsertLinebreaks works by replacing whitespace with newline characters.
  • If a single span of non-whitespace characters is longer than n characters, newlines will be inserted every n characters within the span.

Examples

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Basic Examples  (2)

Insert newlines to ensure no line is longer than 30 characters:

Wolfram Language code: InsertLinebreaks["Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.", 30]

Words longer than the specified length will be broken:

Wolfram Language code: InsertLinebreaks["Pneumonoultramicroscopicsilicovolcanoconiosis", 10]

Scope  (2)

Insert newlines to make a string with lines no longer than the default width (78 characters):

Wolfram Language code: Style[text = InsertLinebreaks[IconizedObject[«Moby Dick»]], 10]

Verify line lengths:

Wolfram Language code: StringLength[StringSplit[text, " "]]

Insert newlines to make a string with lines no longer than 50 characters:

Wolfram Language code: Style[text = InsertLinebreaks[IconizedObject[«Moby Dick»], 50], 10]

Check line lengths:

Wolfram Language code: StringLength[StringSplit[text, " "]]
Wolfram Research (2015), InsertLinebreaks, Wolfram Language function, https://reference.wolfram.com/language/ref/InsertLinebreaks.html.

Text

Wolfram Research (2015), InsertLinebreaks, Wolfram Language function, https://reference.wolfram.com/language/ref/InsertLinebreaks.html.

CMS

Wolfram Language. 2015. "InsertLinebreaks." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/InsertLinebreaks.html.

APA

Wolfram Language. (2015). InsertLinebreaks. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/InsertLinebreaks.html

BibTeX

@misc{reference.wolfram_2026_insertlinebreaks, author="Wolfram Research", title="{InsertLinebreaks}", year="2015", howpublished="\url{https://reference.wolfram.com/language/ref/InsertLinebreaks.html}", note=[Accessed: 14-November-2026]}

BibLaTeX

@online{reference.wolfram_2026_insertlinebreaks, organization={Wolfram Research}, title={InsertLinebreaks}, year={2015}, url={https://reference.wolfram.com/language/ref/InsertLinebreaks.html}, note=[Accessed: 14-November-2026]}