watermark.js is a JavaScript library that enables us to insert watermarks over images quickly and in batch.

It can target any number of images in a web page that has a specific class and apply the watermark over the original image with the help of HTML5 canvas.

watermark.js

The library normally aims to protect images from being stolen. Although, it is not a perfect solution (just like many others) as the image source is plain-coded, it can still prevent non-advanced users.

On the other hand, watermark.js is very handy when you only want to insert an image over another and position however you want without a server-side solution.

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