Regarding finding details of image though url in apex
91906
How to find image dimensions using apex
50309
What's the parameters atribute in apex:canvasApp used for?
30559
Get full URL (including querystring) from an apex REST endpoint
82108
How to get the URL of current page in JSF?
28770
How do I find the absolute url of an action in ASP.NET MVC?
33881
How to get image name, mime type, width, height, file size from post custom field?
84089
How to find 'URL' and append something at the end of URL
84744
How To Retrieve An Image Attachment's Alt Text?
69604
Exposing table name and field names in request URL
130638
String parsing: Extracting the filename from a URL
136026
Determine file type of an image
4232
Need to Pass the values as hidden in Url in Salesforce
71985
How to retrieve the content/file in JSP?
103727
Get URL of ASP.Net Page in code-behind
64829
python: check if url to jpg exists
69076
How do I find images based on their numbers in the Excel file?
46691
How to get the current URL within a Django template?