Seeking Advice on Optimizing PDF Generation Speed in wkhtmltopdf

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Vishnu Shanmughan

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Apr 8, 2024, 5:25:43 AM4/8/24

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I'm converting moderately complex HTML/CSS files to PDF and files I'm converting vary in size, but some are larger than others. It takes normally 3 to 5 minutes to complete. Is there any way to optimize the speed of PDF generation.

Umesh D

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Mar 21, 2025, 12:30:27 AMMar 21

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If your Html contains images more it will take time and you can try setting up the
-d, --dpi <dpi> Change the dpi explicitly (this has no effect on X11 based systems) (default 96) --image-dpi <integer> When embedding images scale them down to this dpi (default 600) --image-quality <integer> When jpeg compressing images use this quality (default 94)

https://wkhtmltopdf.org/usage/wkhtmltopdf.txt
I have generated 1000 pages that will have only 1 image. It generated lessthan minute.

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