Symfony 5 KnpSnappyBundle & wkhtmltopdf Setup and Example(with an explanation of possible errors)

Snappy is a PHP wrapper for the wkhtmltopdf conversion utility.

Snappy works with wkhtmltopdf, so you need to install on your system wkhtmltopdf. I installed it on my Mac via brew as below.

Install command;

brew install --cask wkhtmltopdf

Check for configuration where it’s installed;

which wkhtmltopdf

Installation

With composer, require:

composer require knplabs/knp-snappy-bundle

Configuration

knp_snappy.yaml;

.env;

.env for docker;

Example

If you have error as below;

Warning: Blocked access to file: Worked in 0.12.5

Usage of many https link in html causes “Failed to load about:blank, with network status code 301 and http status code 0 — Protocol “about” is unknown”

Fixed with this option:

$this->pdf->setOption('enable-local-file-access', true);

enable-local-file-access

— — —

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