How to adjust the background color in pdf?

1. The file option in the menu bar is to open and save files, while many editing options are copy-and-paste tools, and undo tools are also used when modifying files.

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2. In the editing options, there are selection tools and advanced search tools, which are used when modifying the contents of files and when cutting pages, and search tools are auxiliary tools when modifying files.

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3. For the tools in the document option, the difference between the tools in the document option and the tool option is that the tool in the document option is to edit the page of the file, while the tool in the tool option is to edit the content of the file.

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4. Select the background tool in the document options. Add, delete and manage in the background tool. Click Add or Select Management Tool to add or edit the background in the file.

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5. After clicking Add Background, you can choose to add color background or background picture to the page, and then set it within the page range, and choose which pages to add background to, which can be all pages or some pages. After selecting, click OK.

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