Watemark on PDF

Is there any library to add a watermark on the existing pdf?

Learning Codeigniter 

Have a look at Mpdf, it might solve your issue.

Dirk B.
Abatrans Software
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Use mPDF.

mPDF -> SetWatermarkImage()

What did you Try? What did you Get? What did you Expect?

Joined CodeIgniter Community 2009.  ( Skype: insitfx )

Thank you , the thing is now I am able to add watermark on existing pdf using below code 

PHP Code:

$path = 'dynamics/flight-plan.pdf';
        $mpdf = new Mpdf();
        $mpdf->SetDisplayMode('fullpage');
        $pagecount = $mpdf->setSourceFile($path);
        for ($i = 1; $i <= $pagecount; $i++) {
            $tplId = $mpdf->importPage($i);
            $mpdf->UseTemplate($tplId);
            $mpdf->SetWatermarkText('CONFIDENTIAL');
            $mpdf->showWatermarkText = true;
            $mpdf->AddPage();
        }
        $mpdf->Output('filename.pdf', \Mpdf\Output\Destination::FILE); 


but sometimes I get this error "This PDF document probably uses a compression technique which is not supported by the free parser shipped with FPDI."

Learning Codeigniter 

https://www.setasign.com/support/faq/fpd...supported/

https://www.setasign.com/support/faq/fpd...supported/

yeah thanks, I had to buy their commercial addon. anyway, I am gonna mark this one as solved now.

Learning Codeigniter