dompdf / dompdf/dompdf

PDF Generation Too Slow

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PHP
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Description

Hello everyone.

Maybe I'm doing something wrong, but I'm generating a PDF based on a blade view in Laravel 10. It's a very simple view with only two images, not very large. The problem is that the generation process takes more than 20 seconds. If I remove the images, the generation is instantaneous.

The PDF is generated and saved to disk. As I mentioned, if I do it without the images, it generates it instantly; if I add the images, it takes more than 20 seconds to generate. Am I doing something wrong? Is there any way to speed up this process?

This is my generation code.

            $data = [
                'documento' => $documento,
                'documentoPasos' => $documentoPasos,
                'documentoPasoUsuarios' => $documentoPasoUsuarios,
                'documentoArchivos' => $documentoArchivos            
            ];

            // Generar el PDF con el tamaño y orientación correctos

            $options = new \Dompdf\Options();
            $options->set('isHtml5ParserEnabled', true);
            $options->set('isRemoteEnabled', true); // Permitir imágenes externas
            $options->set('defaultFont', 'Arial'); // Establecer la fuente
            $options->set('defaultPaperSize', 'letter');

            $pdf = new \Dompdf\Dompdf($options);
            $pdf->setPaper('letter', 'portrait');
            $pdf->loadHtml(view('operacion.documento.documento_auditoria_show', $data)->render());
            $pdf->render();

            // Grabo el PDF en disco temporalmente para firmarlo

            Storage::disk('local')->put('temp/documento_temporal_' . $documento->id . '.pdf', $pdf->output());

Thanks.

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the generation code and the Blade view at operacion.documento.documento_auditoria_show, reproducing the PDF with and without the two images. Inspect the Dompdf options, especially remote image loading, and compare where the extra time is spent. Done means identifying the cause of the image-related delay and documenting a verified way to reduce it.

Written by the indexing model from the issue text.

Assessment

Tech stack
laravel, php
Domain
backend, performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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