WOLFRAM

Wolfram Language & System Documentation Center

StringFormatQ["string","fmt"]

gives True if the string "string" might be imported as format "fmt" and gives False otherwise.

StringFormatQ["string",{"fmt1","fmt2",…}]

gives True if "string" might be imported as one of "fmti".

Details
Details and Options Details and Options
Examples  
Basic Examples  
Scope  
See Also
Related Guides
History
Cite this Page

StringFormatQ   

Listing of Formats »

StringFormatQ["string","fmt"]

gives True if the string "string" might be imported as format "fmt" and gives False otherwise.

StringFormatQ["string",{"fmt1","fmt2",…}]

gives True if "string" might be imported as one of "fmti".

Details

  • StringFormatQ attempts to identify whether a string can be imported as a specific format.
  • StringFormatQ uses heuristic methods and may not give correct results, particularly for shorter strings.
  • StringFormatQ does not verify that ImportString would succeed if applied to "string".

Examples

open all close all

Basic Examples  (1)

Export an image to a GIF string:

Check if the string might be a GIF:

Check if the string might be a JPEG:

Check if the string might be in one of the image formats:

Scope  (1)

Read in a WXF file as a string:

Check if the string might be imported as the "Binary" format:

Check if the string might be imported as the "Text" format:

Wolfram Research (2020), StringFormatQ, Wolfram Language function, https://reference.wolfram.com/language/ref/StringFormatQ.html.

Text

Wolfram Research (2020), StringFormatQ, Wolfram Language function, https://reference.wolfram.com/language/ref/StringFormatQ.html.

CMS

Wolfram Language. 2020. "StringFormatQ." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/StringFormatQ.html.

APA

Wolfram Language. (2020). StringFormatQ. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/StringFormatQ.html

BibTeX

@misc{reference.wolfram_2025_stringformatq, author="Wolfram Research", title="{StringFormatQ}", year="2020", howpublished="\url{https://reference.wolfram.com/language/ref/StringFormatQ.html}", note=[Accessed: 14-August-2025]}

BibLaTeX

@online{reference.wolfram_2025_stringformatq, organization={Wolfram Research}, title={StringFormatQ}, year={2020}, url={https://reference.wolfram.com/language/ref/StringFormatQ.html}, note=[Accessed: 14-August-2025]}