Can we convert pdf to image by using jinja?

satish_malkar · March 28, 2023, 12:02pm

Hi Team,
I have upload a pdf file and i want to convert that pdf to images and that images i want to show in print format .it is possible using jinja code?
Please suggest solutions

Thanks & regards
Satish

max_morais_dmm · April 6, 2023, 11:07am

@satish_malkar

Yes, it’s fully possible, but using Python Code, and not only Jinja Code.

Just for context, on the past I had to create various ESC/POS print formats, for ERPNext, and instead of create all those print formats in pure ESC/POS commands, we created a routine, based on the standard Jinja print format of ERPNext to generate images and then we embed the image into an standard ESC/POS body, to send to the printer.

There’s a lib in Python called Imgkit, that uses a secondary utility of wkhtmltopdf called wkhtmltoimg imgkit · PyPI

The API is almost the same of pdfkit so, you dont will have troubles to adapt the code that render PDF in frappe

github.com

frappe/frappe/blob/develop/frappe/utils/pdf.py#L26


      
          from frappe.utils.jinja_globals import bundled_asset, is_rtl
          
          
PDF_CONTENT_ERRORS = [
          	"ContentNotFoundError",
          	"ContentOperationNotPermittedError",
          	"UnknownContentError",
          	"RemoteHostClosedError",
          ]
          
          

          
def get_pdf(html, options=None, output: PdfWriter | None = None):
          	html = scrub_urls(html)
          	html, options = prepare_options(html, options)
          
          
	options.update({"disable-javascript": "", "disable-local-file-access": ""})
          
          
	filedata = ""
          	if LooseVersion(get_wkhtmltopdf_version()) > LooseVersion("0.12.3"):
          		options.update({"disable-smart-shrinking": ""})
          
          
	try:

Basedly on that code, you will be able to generate Images, basedly on the standard Jinja templates of ERPNext.

Good look on your journey, and learning path!
All the best!