Verify whether a ColdFusion variable returns an image

IsImage function

Verify whether a file is a valid image

IsImageFile function

Create thumbnail images

ImageScaleToFit function, the ImageResize function, or the resize action of the cfimage tag

Create a watermark

ImageSetDrawingTransparency function with any of the ImageDraw functions and the ImagePaste function

Get information about an image (for example, so you can enforce size restrictions)

ImageGetHeight and the ImageGetWidth functions or the ImageInfo function

Enforce compression on JPEG images

quality attribute of the write action of the cfimage tag or the ImageWrite function

Convert an image from one image file format to another (for example, convert a BMP file to a JPEG)

cfimage tag or ImageRead and ImageWrite functions

Convert an image file to a Base64 string

cfimage tag or the ImageWriteBase64 function

Create a ColdFusion image from a Base64 string

ImageReadBase64 function

Insert a ColdFusion image as a Binary Large Object Bitmap (BLOB) in a database

ImageGetBlob function within a cfquery statement

Create an image from a BLOB in a database

cfimage tag or the ImageNew function with a cfquery statement

Create an image from a binary object

cffile tag to convert an image file to a binary object and then pass the binary object to the ImageNew function

Create a Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA) image

captcha action of the cfimage tag