Concept using Poppler pdftoppm for PDF image generation

README.md

Concept using Poppler pdftoppm for PDF image generation

Fast way to generate images form PDFs. Using Poppler.

Usage

return (new PdfTopPm())
            ->setFile('your_pdf_file.pdf')
            ->setDpi([72,300])
            // ->isSingleFile(1)
            ->setImagePrefix('prefix_name')
            ->execute();

Sources

• https://jdhao.github.io/2019/11/14/convert_pdf_to_images_pdftoppm/
• http://macappstore.org/poppler/
• https://zoomadmin.com/HowToInstall/UbuntuPackage/poppler-utils

PdfTopPm.php

<?php
/**
 * Concept class.
 */

class PdfTopPm
{
    public $popplerPath;
    public $dpi = 72;
    public $quality = 100;
    public $singleFile = false;
    public $index = 1;
    public $file;
    public $imagePrefix;

    public function __construct()
    {
        return $this;
    }

    public function setFile($file)
    {
        $this->file = $file;

        return $this;
    }

    public function setImagePrefix($prefix)
    {
        $this->imagePrefix = $prefix;

        return $this;
    }

    public function setPopplerPath($path)
    {
        $this->popplerPath = $path;

        return $this;
    }

    public function setDpi($dpi)
    {
        $this->dpi = $dpi;

        return $this;
    }

    public function setQuality($quality)
    {
        $this->quality = $quality;

        return $this;
    }

    public function setIndex($index)
    {
        $this->index = $index;

        return $this;
    }

    public function isSingleFile($page)
    {
        $this->singleFile = true;
        $this->index = $page;

        return $this;
    }

    public function execute()
    {
        $single = null;

        if ($this->singleFile ) {
            $single = '-singlefile -f ' . $this->index;
        }

        $dpis = (array) $this->dpi;
        $prefix_dpi = count($dpis) > 1;

        foreach ( $dpis as $dpi ) {
            $filename = $prefix_dpi ? $dpi . '_' . $this->imagePrefix : $this->imagePrefix;

            shell_exec("{$this->popplerPath}pdftoppm {$single} -r {$dpi} -jpeg -jpegopt quality={$this->quality} {$this->file} {$filename}");
        }
    }
}