Can CF write exif meta data?

That is a great answer.

Dave Watts, Eidolon LLC

Like Dave, I don't think ColdFusion has any functionality to directly edit image metadata. I would go for Dave's second recommendation, ExifTool. You could, for example, run the Windows Executable ExifTool using ColdFusion's cfexecute.

ExifTool is Open Source and is extensively documented. See, in particular, the ExifTool Writing Examples.

Now, some proof of the pudding.

I gave it a go as follows:

1.  Download the Windows executable to C:\bin\Exif tool for images\exiftool-12.41\exiftool.exe;
2.  Place a test image at C:\ColdFusion2021\cfusion\images\dir\testImage.jpg;
3. Get the current image metadata, using
   

   <cfscript>
   img=imagenew("C:\ColdFusion2021\cfusion\images\dir\testImage.jpg");
   
   // Store the exif metadata as an HTML in the logs directory
   writedump(var=imagegetexifmetadata(img), format="html", output="#server.coldfusion.rootdir#\logs\testImageExif.html");
   
   writeoutput("done");
   </cfscript>
   ​

    

4.  Use exiftool to add 1.5 hours to every date in the metadata of the test image
   

   <cfexecute name="C:\bin\Exif tool for images\exiftool-12.41\exiftool.exe" arguments=" -AllDates+=1:30 C:\ColdFusion2021\cfusion\images\dir\testImage.jpg" />
   done​

5. (The Exiftool command does 2 things: creates a back-up of the original image file, plus a new image file having the updated metadata) Rerun the code in step 3 to get the metadata of the new file, and confirm that all the dates have indeed been increased by 1.5 hours.