If you want to add some protection when sharing or sending PDF files, then adding a watermark is a good option. Watermarks can prevent the file from being used maliciously, and at the same time, it can also identify the ** of the file. Below, we'll introduce a few free ways to help you easily add watermarks to your PDF files.
Method 1: Use on-line toolsThere are a lot of tools that can help us add watermarks to PDF files, and some of them are free. For example, you can use the "Quick PDF Converter" tool to add a watermark.
It provides a variety of format conversion, PDF merging, PDF editing, PDF splitting, etc., **tools are not required**, and it is more convenient to use.
We select the [Document Processing] - [PDF Add Watermark] option in the top bar to enter the interface of uploading PDF documents, and the tools areYou can upload multiple files to add watermarks.
Here is the demonstration of uploading three pdf files, you can continue to upload ha, after uploading the file, click [Set Watermark] to enter our watermark editing interface.
Enter the watermark text or ** you want to add, set the watermark position, size, transparency, rotation direction, margin, etc., and finally click "Start Conversion". It not only supports multiple format conversions,File conversion within 2M is free
Method 2: Use of editing softwareIf you don't want to use ** tools, you can also use some editing software, such as mobile apps, sometimes when you go on a business trip or work temporarily after work, there is no computer around, and the mobile phone is the only tool we can use. We have a professional PDF tool in the app, such as the "Quick PDF Editor".
Quick PDF Editor is a professional PDF editing tool, it can not only edit PDF files, but also support free use of PDF reading, PDF painting, PDF text tools, PDF annotation, ** to PDF, PDF to HTML and other functions.
In this software, you can easily add watermarks to your PDF files. All you need to do is open your PDF file and go to the reading interfaceIn the bottom bar, we can see that it can encrypt PDF files, compress signatures, and add watermarks.
Select "Watermark" in the menu that appears, and then select the text watermark you want to enter, where you can set the text size, transparency, and color. It's very easy to operateYou can clear and add watermarks with one click.
Method 3: Use free plug-insIf you use Adobe Acrobat a lot, you can use a plugin called "Watermark" to add watermarks. This plugin can help you add text or watermarks to your PDF files, while also adjusting the position and transparency of the watermarks. You just need to install this plugin and follow the prompts.
Methodology IV. pdf24PDF24 is also a **use tool,Its**Not very stable,But it supports a lot of conversion formats,It is also a tool that supports adding watermarks to PDFs,Select the [Add Watermark to PDF File] button on the home page,Enter the PDF file upload interface,And upload the file。
It supports adding watermarks in batches, and there are many ways to set it up, and the operation is very simple.
These are just a few ways to add a watermark to a PDF file. Each method has its own advantages and disadvantages, so you can choose the right one based on your needs and preferences. Whichever method you choose, it will help you protect your PDF files while improving their legibility.