polyfile
WeasyPrint
polyfile | WeasyPrint | |
---|---|---|
2 | 43 | |
323 | 6,658 | |
0.6% | 1.6% | |
7.6 | 9.5 | |
2 months ago | about 18 hours ago | |
Python | Python | |
Apache License 2.0 | BSD 3-clause "New" or "Revised" License |
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polyfile
- Blind Spots: Automatically detecting ignored program inputs
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Show HN: I am building a new Python library to read/write PDF files
Be careful with PDF! There are many ambiguities in the specification that are implemented differently between parsers, as well as implicitly accepted malformations that almost all parsers will silently accept without warning. It is very easy to accidentally produce so-called file format schizophrenia: When the same file is rendered differently between two parsers. For example, with PDF, what if you have a PDF object stream that has a length that doesn't agree with the position of its `endstream` token? What if you have a PDF dictionary with duplicate keys? Do you use the value of the first key or the second? What if you have two, valid PDFs concatenated one after the other? Do you render the first or the second? What if an object in the XREF table has an incorrect offset?
Shameless plug: I am one of the maintainers of PolyFile, which, among other things, can produce an interactive HTML hex editor with an annotated syntax tree for dozens of filetypes, including PDF. For PDF, it uses a dynamically instrumented version of the PDFminer parser. It sounds like it might satisfy your use case.
https://github.com/trailofbits/polyfile
WeasyPrint
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Launch HN: Onedoc (YC W24) – A better way to create PDFs
Is there a reason you didn't consider something like Weasyprint?
https://weasyprint.org
I've gone through a number of systems to convert CV's, business cards, and other docs and it hasn't let me down yet.
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CSS for Printing to Paper
You don't _have_ to use a browser. I had very good results with Weasyprint [0]. And there's also PrinceXML [1] if you're willing to pay.
[0]: https://weasyprint.org/
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Show HN: A new open-source library to design PDF using React
Thanks for your answer! I imagined you would be using PrinceXML behind the scenes since that is probably the gold standard in HTML+CSS rendering.
The only open source alternative I know of is WeasyPrint at https://weasyprint.org/. I'm not sure how well it fares against PrinceXML, though.
And thanks for the pointer to Taffy - I didn't know it before!
- 1.5M PDFs in 25 Minutes
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Htmldocs: Typeset and Generate PDFs with HTML/CSS
Flexbox support has been [included][1] since 2018, although my use case was the prototypical one - a single row w/ 3 columns - so YMMV with how it handles more complex layouts.
[1]: https://github.com/Kozea/WeasyPrint/pull/579
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How to Simply Generate a PDF From HTML in Symfony With WeasyPrint
Performance is not the strength of WeasyPrint, meaning that heavy HTML files will increase generation time. You should always compress images before attaching them, as they are not compressed by default. Generating a 50-page-long PDF may take up to a minute in extreme cases, although multi-page documents generated on my project take fewer than 2 seconds to generate.
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Show HN: Invoice Dragon – An Open Source App to Create PDF Invoices for Free
For Python there is Weasyprint: you prepare the invoice as an HTML document, and Weasyprint turns it into a PDF
https://weasyprint.org/
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The Gemini protocol seen by this HTTP client person (curl dev)
Well yes, but you can implement HTML+CSS. WeasyPrint did from scratch, and independent implementations of HTML+CSS are considerably more numerous than HTML+CSS+JS.
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Library to convert HTML to pdf in Golang
In a recent project I used https://github.com/Kozea/WeasyPrint/ it is written in python, so you will need to use it like so:
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RE: If you had to pick a library from another language (Rust, JS, etc.) that isn’t currently available in Python and have it instantly converted into Python for you to use, what would it be?
You should maybe check out weasyprint. https://weasyprint.org/
What are some alternatives?
PyMuPDF - PyMuPDF is a high performance Python library for data extraction, analysis, conversion & manipulation of PDF (and other) documents.
ReportLab
polytracker - An LLVM-based instrumentation tool for universal taint tracking, dataflow analysis, and tracing.
PyPDF2 - A pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files
pdfquery - A fast and friendly PDF scraping library.
WKHTMLToPDF - Convert HTML to PDF using Webkit (QtWebKit)
pdfplumber - Plumb a PDF for detailed information about each char, rectangle, line, et cetera — and easily extract text and tables.
QuestPDF - QuestPDF is a modern open-source .NET library for PDF document generation. Offering comprehensive layout engine powered by concise and discoverable C# Fluent API. Easily generate PDF reports, invoices, exports, etc.
pdfsyntax - A Python library to inspect and modify the internal structure of a PDF file
PDFMiner - Python PDF Parser (Not actively maintained). Check out pdfminer.six.
mupdf - mirrored from git://git.ghostscript.com/mupdf.git
MathJax - Beautiful and accessible math in all browsers