Add watermark to pdf free acrobat reader
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The second difference is in how the functions operate. First, one uses a text string as the source for the watermark content, and the other uses an image or PDF file. There are only two differences between these functions. The two watermarking functions are Doc.addWatermarkFromFile() and Doc.addWatermarkFromText(). It can be used in a wide variety of ways that go beyond what is practical with the standard watermarking tool, such as scaling and tiling pages. In fact, watermarking is one of the most powerful features in the Acrobat JavaScript model. JavaScript is just as rich and can do everything the standard watermark tool can do. The Acrobat JavaScript model provides two watermark functions that have just as many options as the watermarking tool shown in Figure 1. If more flexibility is required- for example, if different text or images need to be applied to different documents- then the only solution is JavaScript. Once set, the watermark is applied to all PDF files using the same parameters. However, the watermark settings have to be set by hand. If a watermark needs to be applied to more than one PDF, it can be automated through an Action.
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This feature allows the form creator to add dynamic content to the PDF with only Acrobat Professional and JavaScript. However, the most useful feature is that OCGs can be turned on and off with a script, as shown in the Creating and Using Layers (OCGs) with Acrobat JavaScript article. OCGs allow page content to be turned on and off based on parameters such as the zoom level.
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When Acrobat creates a watermark, it places the watermark content into an OCG (optional content group), more commonly referred to as a PDF layer. This rich feature set means that the Acrobat watermarking tool can be used to add logos, overlays, backgrounds, headers, footers, special marks or any other kind of (post-creation) content to a PDF.įigure 1 – The watermarking tool provides a wealth of optionsīut there’s more. The Acrobat watermarking tool (Figure 1) allows the user to select the location, page range, opacity, scaling and many other parameters. Nearly any type of static content (text, image files and pages from another PDF) can be applied to a PDF as a watermark. The PDF watermark can be used to create the exact effect produced by the old-style watermarking, but it also has many other uses. For a PDF, the term watermark means over- or under- laying text and/or images onto a page. Since water has a very different effect on electronic equipment, a watermark on a PDF is quite different.
Add watermark to pdf free acrobat reader download#
You can also download the package directly from NuGet.A watermark on an old-style DTF (dead-tree-format) was literally just that, a shadowy mark on the page created by applying water to the document.
Add watermark to pdf free acrobat reader install#
The easiest way to install the package is through the Visual Studio Package Manager. Template watermarkTemplate = new Template() ĭynamicPDF Core Suite is available on NuGet and is part of the
Add watermark to pdf free acrobat reader code#
Sample Code - C# MergeDocument document = new Needs Watermark.pdf")
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Image Watermark to PDF document using DynamicPDF Core Suite. The following steps and sample code illustrate adding an The ImageWatermark class will be used to add Image Watermark. Watermark can be added as Text or Image or any other page element to a PDF document.
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