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.


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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