Watermarking is a popular method to protect digital photos from being copied by the picture thieves on the net. Using PHP we can do the same. Here we use a transparent PNG image as Watermark template, we then merge it with image to create a permanent watermark.

There are plenty of powerful jQuery validation plugins out there to meet your needs, but sometimes your requirement is so little that you just don’t bother including these plugins into your page, you might just create your own simple validation for your Form. So here’s a simple jQuery validation script you can include in your form page and have almost powerful validation.

If you are creating an image uploader, you can provide thumbnail preview of currently selected images in file input field. We don’t need to upload entire file to server to do that. File API is supported by all modern browsers, we just need to take advantage of this feature, it provides us with information about files and allows to access their content.

To select all text inside an element such as DIV, we can simply use JavaScript document.createRange() method to create a range, and than using range.selectNodeContents() we can set node range (start and end), after which use selection.addRange() to select the range of the element.