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FileReadBinary
Last update:
May 18, 2026
Description
Reads an on-disk or in-memory binary file (such as an executable or image file) on the server, into a binary object parameter that you can use in the page. To send it through a web protocol (such as HTTP or SMTP) or store it in a database, first convert it to Base64 by using the ToBase64 function.
Note: This action reads the file into a variable in the local Variables scope. It is not intended for use with large files, such as logs, because they can bring down the server.
Returns
The entire contents of a binary file.
Category
Function syntax
FileReadBinary(filepath) |
See also
History
ColdFusion 8: Added this function.
Parameters
Parameter | Description |
filepath | An absolute path to an on-disk or in-memory binary file on the server |
Usage
You convert the binary file to Base64 to transfer it to another site. ColdFusion 8 supports reading an image file as a binary and passing the result to a cfimage.
Example
The following example reads a binary file.
<h3>FileReadBinary Example</h3>
<cfscript>
myfile = FileReadBinary("c:\testingdir\test3.jpg");
</cfscript>
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