dryad dom pdf

graph to image
https://www.webslesson.info/2018/07/how-to-convert-google-chart-to-pdf-using-php.html ==> ok
https://stackoverflow.com/questions/41612042/dompdf-display-google-chart-in-the-pdf-where-data-obtained-from-database

Google chart 
https://developers.google.com/chart/interactive/docs/gallery

Snappy pdf
Generate pdf with graphs

https://www.startutorial.com/articles/view/generating-pdfs-from-html-and-snappy

https://medium.com/@almestaadmicadiab/laravel-snappy-for-pdf-with-charts-e5c9b757d6dd

https://www.api2pdf.com/generate-pdf-report-with-highcharts-and-wkhtmltopdf/

https://www.api2pdf.com/

https://selectpdf.com/html-to-pdf-api/

https://selectpdf.com/web-html-to-pdf-rest-api-for-php-samples/


dompdf
snappypdf
api2pdf
wkhtmltopdf
selectpdf