Watermarking Uploaded Images

Opal has a built-in watermark feature for any Images that are uploaded. To watermark an image you're about to upload, check the Watermark option in the Special Effects box.

By default, Opal looks for a watermark image file(watermark.png) which is stored in the current theme's image directory, for example: public/themes/fracture/images/watermark.png.

If this file exists, Opal will composite(merge) it onto the image you're uploading, creating a pretty watermark to protect your photo or what not. If this file is not found, Opal will create a text-based watermark based on the title of your opal application, for example: My Opal Website.

So if you want to use your own watermark image, all you have to do is overwrite the aforementioned watermark.png file with your own.

  • Tip: if you're going to create your own watermark from scratch, we recommend creating a png file with a transparent background and semi-transparent(25%-50% opacity) foreground.

watermarked_with_image.png - A watermarked image. (33.3 KB) Dave Hulihan, 09/03/2010 05:57 pm

watermarking_image.JPG - Applying the watermark. (31.3 KB) Dave Hulihan, 09/03/2010 06:04 pm