Multi-page pdf pushing content

[Pritoj]

I'm trying to create a simple service where I get a pdf file.

I need to add a header to every page. The header has a fixed size. So I want the content to be paginated accordingly.

So if I have an unmodified PDF file

Page 1 : 
------------------------
|                       |
| Old pdf content       |
| More content          |
| Even more content     |
------------------------
Page 2 : 
------------------------
|                       |
| Old pdf content       |
| More content          |
| Even more content     |
------------------------

The new PDF should look like this...

Page 1 : 
------------------------
| Header Content-1      |
| Header Content-2      |
|                       |
| Old pdf content-1     |
------------------------
Page 2 : 
------------------------
| Header Content-1      |
| Header Content-2      |
| More content-1        |
| Even more content-1   |
------------------------
Page 3 : 
------------------------
| Header Content-1      |
| Header Content-2      |
|                       |
| Old pdf Content-2     |
------------------------
Page 4 : 
------------------------
| Header Content-1      |
| Header Content-2      |
| More content-2        |
| Even more content-2   |
------------------------

Is there a way to do this?

[can-keklik]

If you are asking that there is an option in API for this kind of operation, I guess not.

But if you want to crop pages manually,

It depends on definition of your content. Cases are:

Full text: You need to break text, I think it would be difficult (Not sure is it possible or not)
Full image: Doesn't contain any text, fully image. Well then you should crop images, easier than text case.
Mixed: Text makes it difficult, again.

I think, even if cropping your content is _possible, It won't be _feasible.

An alternative to cropping is faking. I mean you wrap your pages with XObjects, and then put XObject-wrapped pages into new pages. First copy to page 1, second goes to 2, .... Of course with different y coordinates. If you really need to do this operation, you should try faking.

But If I were you, I would try to resize pages, not to break them. Just shrink page, and put your headers, footers, etc.