The ImageRead function performs the same operation as the cfimage read action . However, you cannot use the cfimage tag to read and create. You can use the cfimage tag to perform common image manipulation operations as a border; captcha; convert; info; read; resize; rotate; write; writeToBrowser. The other day, I needed to do some on-the-fly conversion of PNG image files to JPG format in ColdFusion. This was part of stop-gap measure at.

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These products, while excellent in quality, just mean adding one more level of complexity to any application that requires server-side image manipulation. We have looked at most of these types above. Rotate an image cfmage degrees clockwise. I don’t deal with Base64 encoded images all that often, but this seems like something that could be very useful when put into clever hands.

To me, they are both binary objects I think. When it comes to functions, if you want to read in Base64 image data, you have to use the ImageReadBase64 function: The border is added to the outside edge of the source image, increasing the image area accordingly. The name of the ColdFusion image object you are going to write.

The first part will cover basic reading and writing of images using CFImage and the related image manipulation functions.

String getClass – returns: Image file requests go the Web server, not the ColdFusion application server. For all other color values, enter the hexadecimal value. One of the most exciting features of the new ColdFusion 8 image manipulation is the large number of file formats that can be read in and written out.



Poor image quality with highest performance. The ColdFusion image on which this operation is performed. As a side note, I don’t understand fcimage people keep answering questions in the comments instead of in the answers.

Image object, I have listed them below skip past this if you have no idea what I’m talking about. For all the above “Read” demos, we were really just getting the info about the image. Did anyone else see “URL” and get mentally turned on? I think it’s an awesome feature, but I’m not sure I like having to converr on mappings and tying in with settings external to the ColdFusion application server.

Email Cfimagf, but never shown. If you want to actually read the image into a ColdFusion variable in the form of the coldfusion. Now that we have covered the tag-based reading, let’s examine reading in images using the new ColdFusion 8 image functions. If you do not specify a format, the image is displayed in PNG format. Also notice that the destination image was a GIF file format. ColdFusion supports only the system fonts that the JDK can recognize. cinvert

Converting images

connvert Does it make any difference if you code the conversion of the image within the cfdocument tag attributes instead of within the tags? Sign up using Facebook. Valid only if the destination attribute is specified. Retrieve meta data from an image and stores that as a structure in a variable.


ColdFusion Help | Converting images

Notice that to do this, I am specifying the source of the image the image object we created and the output format of JPG. String, boolean – returns: Reading an image from a URL and writing it to disk could be done this way: The name of the ColdFusion image object that we are writing to disk.

String, float – returns: Converting transparent images images with alpha can degrade image quality. If this value is blank, the width is calculated proportionately to the height. Stack Overflow works best with JavaScript enabled.

But, before we get into that, let’s just quickly touch upon these new features as a whole. Image, int, int – returns: Sorry that this went longer than intended, but this introduction only scratched the surface.

Images are displayed in PNG format. Image copyArea int, int, int, int, int, int – returns: ColdFusion 8 has given us CFImage. Width in pixels of the image. Due to the wide array of image functionality in ColdFusion 8, I am going to try and break this tutorial up into several small and manageable parts. You can use the write action to change the quality of a JPEG image to reduce file size.

The following example shows how to set the thickness and color of a border: