Hi, I was using ^|.*\.(?i:gif|jpg|png)$ until I found out that any file type could be uploaded so I emailed support and Jack gave me ^([%\w-]+\.(?:jpe?g|JPE?G|gif|GIF|png|PNG)|)$ which works fine. I am finding most of my users are uploading files like 1a 2b.jpg and the gap/whitespace is giving them a error, how would I modify the above so that only images can be uploaded but the image can have any character in the filename including white space?
Form Regex - Gaps in file names