Sets up Imagick for PDF processing.

Description

Increases rendering DPI and only loads first page.

Return

Source

protected function pdf_setup() {
	try {
		/*
		 * By default, PDFs are rendered in a very low resolution.
		 * We want the thumbnail to be readable, so increase the rendering DPI.
		 */
		$this->image->setResolution( 128, 128 );

		// Only load the first page.
		return $this->file . '[0]';
	} catch ( Exception $e ) {
		return new WP_Error( 'pdf_setup_failed', $e->getMessage(), $this->file );
	}
}

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