Classic ASP Discussion - Watermark an Image

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Watermark an Image

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Category: General Discussion
Forum Name: Classic ASP Discussion
Forum Description: Discussion on Active Server Pages (Classic ASP).
URL: https://forums.webwiz.net/forum_posts.asp?TID=16957
Printed Date: 29 March 2026 at 12:03pm
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com

Topic: Watermark an Image

Posted By: seanlail
Subject: Watermark an Image
Date Posted: 19 October 2005 at 4:43pm

I've seen that with Lunix and php you can add a watermarked to an image based on a gif you have.

I dont understand it completely, so if my terminology is wrong, "oops".

My question is... is there a way to do this with ASP or ASP.Net???

Replies:

Posted By: michael
Date Posted: 19 October 2005 at 4:56pm

In asp.net it is very simple to do. Not so sure about asp. This is how I am using it on my gallery



Public Sub AddWatermark(filename As String, watermarkText As String, outputStream As Stream)

   Dim bitmap As Bitmap = Bitmap.FromFile(filename)

   Dim font As New Font("Arial", 20, FontStyle.Bold, GraphicsUnit.Pixel)

   Dim color As Color = Color.FromArgb(10, 0, 0, 0) 'Adds a black watermark with a low alpha value (almost transparent).

   Dim atPoint As New Point(100, 100) 'The pixel point to draw the watermark at (this example puts it at 100, 100 (x, y)).

   Dim brush As New SolidBrush(color)
   

   Dim graphics As Graphics = Nothing

      graphics = Graphics.FromImage(bitmap)

 
   
   graphics.DrawString([text], font, brush, atPoint)

   graphics.Dispose()

   
   bitmap.Save(outputStream)

End Sub

To call it, just add something like this to your aspx file (assume the class is called MyImage):


Dim filename As String = "../images/someimage.jpg"

Dim image As New MyImage()

image.AddWatermark(filename, "Watermark Test", HttpResponse.OutputStream)

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Posted By: dpyers
Date Posted: 20 October 2005 at 8:21pm

I think you can merge two images with aspjpeg.

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