Computer Application, Maintenance and Supplies

Monday, March 22, 2010

Watermark to Protect Photos

The popularity and simplicity of modern digital cameras mean that it’s never been easier to take great photos. Throw in plenty of free storage available on the internet and the result is that millions of people now proudly display their digital photographs online for others to enjoy. But not to rip off.

There are various ways to protect images stored on photo-sharing services such as Flickr. Sharing only small copies of each photo works well, but there’s also an excellent DIY option that allows pictures to be seen in all their high resolution glory watermarking.

This adds a faint copyright message across the photo that allows people to see the detail, but prevents them from ‘borrowing’ it for their own use. Here’s how to do it with the free Photofiltre image editing program.


Start by getting Photofiltre. Launch your web browser, click once in the Address or Location line and type www.snipurl.com/3hpua . Follow the instructions to download the program and install it. Next, find a photo, load it into Photofiltre and then click on the ‘T’ button in the button bar to open the Text dialogue box. From here we’ll be able to add and then format the text that will be placed over the picture as a watermark.

Click in the empty Text input box and type in the text for the watermark. There are plenty of options to change the look of the text, but for now, just use the size control to increase the size of the text to something that sounds reasonable; in this example we’ve increased it to 30. Click OK to add the text to the picture. Here it’s clear that the text is nowhere near big enough, so we’ll work on it some more. Double-click the text to open the dialogue box again.

Here we’ve made a couple of significant changes. First, we’ve increased the size from 30 to 250 - although this seems like an enormous jump, some trial and error experimentation with different sizes in between has shown us that it will work well. Next, we’ve opened the dropdown menu next to the colour command and chosen white. We could also change the font from Arial Black, but we like it. Clicking OK will make the changes. After that, double-click the text to open the dialogue box again.

Although the text is the right size, it’s far too imposing and makes it hard for anyone to get a really good look at the image itself. Let’s fix that. With the dialogue box still open click the Effects tab at the top. See the Opacity slider? Drag it to the left with the cursor until it’s set to about 30%. You might want to go lower or higher -­ find a setting that suits you. Put a tick in the Drop shadow box, leave all the other settings as they are and click OK.

We’d like to add a proper copyright symbol, but Photofiltre won’t let us. Instead, we’ve opened our word processor ­- Word -­ and created it using that. The quick way is to hold down the Ctrl and Alt keys and press ‘C’. Then just highlight the symbol, go to the Edit menu and choose Copy and switch back to Photofiltre. Make sure the Text dialogue is open, click the Text tab, click once in front of the existing text, then press Ctrl and V to paste the symbol into place like so.

Press the spacebar once to put a space between the copyright symbol and the rest of text. Then to finish off, change the angle of the text so that it runs from bottom left to top right. Click the lower arrow on the control next to Angle and change the ‘00’ setting there to ‘-30’. Click OK and the copyright message will run diagonally across the image, with the symbol in place. Save the picture with the copyright watermark in place and that’s that.

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