Real address of ASP. NET hidden image

Generally, the website's Image Code is like this.

Reference content is as follows:

Right-click the image and select Properties to view the actual image address. In this way, other websites can be used to steal pictures of your website. We can use a small trick to prevent this situation.

Create a showimg. ASP (or showimg. PHP) file (This article uses the ASP syntax. In fact, the basic idea of PHP is the same except for different syntaxes). what it needs to do is to take the file value from the request. As follows:

Reference content is as follows: <% Dim filename Filename = request ("file ") Response. Redirect "Attachments/" & filename & ". jpg" %>

Change the image code to the following method:

Reference content is as follows: