Watermark pdf

You can do a lot of neat things using the Python programming language. Using Python you can easily watermark a pdf. You can use a module called python3-fitz which uses MuPDF underneath (install this too)

If you don’t know the Python programming language, I recommend this tutorial as a starting point.

You can install both fitz and mupdf using your package manager.

sudo apt install python3-fitz
sudo apt install mupdf
sudo apt install python3-fitz
sudo apt install mupdf
sudo apt install python3-fitz
sudo apt install mupdf

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Python watermark

Then you need an input file and an image. Set the position using the fitz.Rect() function.

Load the module like this:

<span>import</span> <span>fitz</span>
<span>import</span> <span>fitz</span>
import fitz

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Install it using your operating systems package manager. If you use pip, there seem to be some other packages named fitz which are conflicting.

Then open the pdf

doc = fitz.open("input.pdf")
doc = fitz.open("input.pdf")
doc = fitz.open("input.pdf")

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Set the location of your watermark

<span>rect</span> <span>=</span> <span>fitz</span><span>.</span><span>Rect</span><span>(</span><span>0</span><span>,</span> <span>0</span><span>,</span> <span>100</span><span>,</span> <span>100</span><span>)</span>
<span>rect</span> <span>=</span> <span>fitz</span><span>.</span><span>Rect</span><span>(</span><span>0</span><span>,</span> <span>0</span><span>,</span> <span>100</span><span>,</span> <span>100</span><span>)</span>
rect = fitz.Rect(0, 0, 100, 100)

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Iterate over the pages and insert the water mark

<span>for</span> <span>page</span> <span>in</span> <span>doc</span><span>:</span>
    <span>page</span><span>.</span><span>insertImage</span><span>(</span><span>rect</span><span>,</span> <span>filename</span><span>=</span><span>"logo.jpeg"</span><span>)</span>
<span>for</span> <span>page</span> <span>in</span> <span>doc</span><span>:</span>
    <span>page</span><span>.</span><span>insertImage</span><span>(</span><span>rect</span><span>,</span> <span>filename</span><span>=</span><span>"logo.jpeg"</span><span>)</span>
for page in doc:
    page.insertImage(rect, filename="logo.jpeg")

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And save it. The full code:

<span>import</span> <span>fitz</span>
<span>doc</span> <span>=</span> <span>fitz</span><span>.</span><span>open</span><span>(</span><span>"input.pdf"</span><span>)</span>
<span>rect</span> <span>=</span> <span>fitz</span><span>.</span><span>Rect</span><span>(</span><span>0</span><span>,</span> <span>0</span><span>,</span> <span>100</span><span>,</span> <span>100</span><span>)</span>
<span>for</span> <span>page</span> <span>in</span> <span>doc</span><span>:</span>
    <span>page</span><span>.</span><span>insertImage</span><span>(</span><span>rect</span><span>,</span> <span>filename</span><span>=</span><span>"logo.jpeg"</span><span>)</span>
<span>doc</span><span>.</span><span>save</span><span>(</span><span>"output.pdf"</span><span>)</span>
<span>import</span> <span>fitz</span>
<span>doc</span> <span>=</span> <span>fitz</span><span>.</span><span>open</span><span>(</span><span>"input.pdf"</span><span>)</span>
<span>rect</span> <span>=</span> <span>fitz</span><span>.</span><span>Rect</span><span>(</span><span>0</span><span>,</span> <span>0</span><span>,</span> <span>100</span><span>,</span> <span>100</span><span>)</span>

<span>for</span> <span>page</span> <span>in</span> <span>doc</span><span>:</span>
    <span>page</span><span>.</span><span>insertImage</span><span>(</span><span>rect</span><span>,</span> <span>filename</span><span>=</span><span>"logo.jpeg"</span><span>)</span>

<span>doc</span><span>.</span><span>save</span><span>(</span><span>"output.pdf"</span><span>)</span>
import fitz
doc = fitz.open("input.pdf")
rect = fitz.Rect(0, 0, 100, 100)

for page in doc:
    page.insertImage(rect, filename="logo.jpeg")

doc.save("output.pdf")

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If you run the program it will output a new pdf with the watermark image on top of every page.

Make a backup of your file before you run it. If you want, you can build a GUI around it using something like tkinter or pyqt

原文链接：Watermark pdf