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I want to create a simple web app where I can drag an image in, and watermark the corner with the given text. Where should I start for something like this?

I have knowledge in Java and Ruby.

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closed as off topic by Jonathan Khoo, Thorbjørn Ravn Andersen, MainMa, Walter, ChrisF Nov 15 '11 at 11:19

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Can you do the watermarking just in a simple Java program given the image and the text? – user1249 Sep 3 '11 at 3:31
@Thorbjorn No I can't – Matt Bettinson Sep 3 '11 at 3:34

Start with learning how to load the image, draw some text on it and save it again in a stand-alone program. The Oracle tutorial on 2D graphics would be a good starting point:

When you have that running , see for the "upload image in webserver" part. This can be a bit tricky.

Have fun.

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If you do this with Ruby on Rails in combination with ImageMagick and the RMagick gem it shouldn't be more than a few lines of code to get the whole thing running.

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