wkhtml2pdf | Html to PDF Composer Package | Document Editor library

I'm following the Spring Getting Started tutorials and I'm breaking my brains on how to do something that should be relatively simple like accessing the result of another path in the same Controller.

What I'm trying to do:

1. Return a filled Thymeleaf template as HTML to the browser <- this works out of the box
2. Return the same page as a pdf

GreetingController:

I'm generating a pdf, the file ils generated, but since I did a composer update (from symfony 4.2.4 to 4.2.5), I have the following error

The file 'generated/pdf/Mon_Beau_Chateau_Roi_Des_Fôrets_Su-Per_04-2019_8ddb3a64c4.pdf' was not created (command: /var/www/html/gestImmo/bin/wkhtml2pdf --lowquality '/tmp/knp_snappy5ca4ac7a32b3d7.26041529.html' 'generated/pdf/Mon_Beau_Chateau_Roi_Des_Frets_Su-Per_04-2019_8ddb3a64c4.pdf').

I watched the logs, I haven't find the problem :

I'm on Symfony4 and I'm using knpSnappyBundle. And I meet a strange error than I can't resolve:

Which libraries do I need? Which command line parameters do I need to pass?

I've installed wkhtml2pdf and I've tried to run:

pandoc reports/7/report.html -t pdf -o reports/7/report.pdf

Which reports an error of:

Have a look at the following image (page print dialog in Chrome):

The DIV with grey background does not fit on the first page anymore, so the browser decides to move the whole div to a new page (which is what I want).

What I however want to get rid of, is the empty box with background color on the first page (which originates from the very same DIV).

Is there a way to wrap the complete box to the next page? And not display it on the first page at all (if it does not fit).

In the end I'm not interested in printing the page, but rather use wkhtml2pdf to generate a PDF from this HTML. But it is the same issue.

So a webkit only solution would be fine for me.

Here is the HTML / CSS code, if you like to try what could be seen in the image above. Just open the print dialog in Chrome and you should see the same result:

I'm using the wkhtml2pdf libary in my Laravel application. On my local environment this works perfectly. My PDF is correctly generated. In my .env file I have:

WKHTML2PDF_BIN_FILE=wkhtmltopdf-amd64

But on my scaleway server I have the following error:

My software supports armhf. So I couldn't install the amd/64-bit versions. I've installed wkhtmltopdf on my server like this:

I'm trying to create a small PDF file, embedding one optimized PNG image displayed as a header and footer on a 3 page PDF (same image must appear 6x in the PDF)

My optimized PNG image is only 2.3KB. It looks very sharp.

Failed with libreoffice

When I insert just one instance of the 2.3KB PNG image into a Libreoffice Writer doc containing only text, then export as PDF I can see that the image gets re-compressed to JPG and the resulting PDF file grows by about 40KB after adding the image. It also loses quality, the PNG also gets JPG fuzzy edges.

If I right click the image and select compression, there is no way to disable recompressing the image (it's already optimized better than libreoffice could do it) I've tried setting a compression level of 0,1,9 etc. Choosing JPG, no resize, lossless, etc but there was no improvement.

Failed with wkhtmltopdf

I also tried making a test page and used wkhtml2pdf but it did the same thing. Adding the low quality flag made no difference.

PDF Spec suggests PNG is supported?

From skimming the PDF spec, it looks like PNG images are supported.

Even plain text PDF files are surprisingly large

The disappointing thing is also when I take a 7KB HTML file which is basically just

foo...

bar...

Suggestions?

Can someone please suggest how to make a small PDF file in Linux? I need to include 7KB of text and repeat one PNG image 6 times.

Manually or programatically. I'll take whatever I can get at this point.