Watermark Image Files

Did you ever want to protect and prove that your special drawings or papers are yours? Well, let’s learn about different ways to put watermarks on pictures or images (like JPG or PNG files). First, we’ll check out a simple online tool for adding watermarks. After that, we’ll see how to do it programmatically with C# and Java.

How to Add Watermark to Images Online

When you want to add watermarks to pictures easily, using online tools can be super helpful. In this article, we’ll use a dependable online tool GroupDocs.Watermark App.

Add Text and Image Watermarks to Images Online

Follow these steps to put watermarks on your images online:

  1. Go to the Watermark app.
  2. Upload your image file (like JPG, JPEG, PNG, and more) either by clicking “Browse” or just dragging and dropping it into the upload area.
  3. Choose whether you want to add a watermark made of text or an image.
  4. You can make your watermark look special by changing things like appearance, transparency, rotation, alignment, and size.
  5. When you’re happy with how it looks, click the “Create Watermark” button to actually put the watermark on your image.
  6. You can then get your picture with the watermark by clicking the “Download” option.

Here’s what a picture looks like with a text watermark after doing these steps:

Text Watermarked Image Output

And here’s what it looks like with an image as a watermark:

Image-based Watermarked Image Output

It’s like putting your signature on your pictures to show they belong to you!

How to Watermark Image Files – Developer’s Guide

Hey programmers! let’s add text or image watermarks to your images. Here, we have multiple libraries to achieve the target. Here we’ll see how to put cool marks on images using different languages. Take a look at your options and pick the one that fits your needs the best.

So, if you’re all set, let’s jump to programmatically add watermarks. Let’s start coding!

Watermarking Image Files using C#

.NET programmers have the awesome power to add watermarks to images using their code. Let’s take a quick look at how it’s done:

  1. Integrate the library into your application.
  2. Utilize the provided code snippet below to add text watermark to your images:

Additionally, refer to the article on How to add Text or Image Watermark to Images using C#.

For further .NET API resources, you can explore the following links:

.NET API | Documentation | Download

Watermarking Image Files using Java

Java enthusiasts can also enjoy adding watermarks to images with their code. Let’s sneak a peek at how it can be done:

  1. Download & Configure the library within your application.
  2. Use the provided source code to add image-based watermark to images:

Refer to the article on How to add Text or Image Watermark to Images using Java for more in-depth instructions.

If you need additional resources for the Java API, you can explore the following links:

Java API | Documentation | Download


Putting watermarks on images is super important to keep your stuff safe. Whether you like using easy online tools or want to get creative with bunch of files with C# and Java, adding watermarks makes your documents safer. Check out all the different ways we talked about in this article and pick the one that works best for you.

Stay secure! 🔒

See Also