i7j-rups
annotated-pdf-spec
i7j-rups | annotated-pdf-spec | |
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3 | 1 | |
248 | 5 | |
0.8% | - | |
5.3 | 10.0 | |
13 days ago | over 2 years ago | |
Java | ||
GNU General Public License v3.0 or later | - |
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i7j-rups
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So you want to modify the text of a PDF by hand
Great post. I've spend a lot of time reading through the PDF specification over the last ~5 years while building DocSpring [1], and I still feel like I've barely scratched the surface. qpdf is a great tool. One of my other favorites is RUPS [2], which really lets you dig into the structure of a PDF.
[1] https://docspring.com
[2] https://github.com/itext/i7j-rups
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Show HN: I am building a new Python library to read/write PDF files
> find a version of iText RUPS application from somewhere on the internet
You mean this, right? https://github.com/itext/i7j-rups#readme
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Any decent free online tool which can give me a breakdown of pdf contents including relative sizes of assets such as images, fonts, etc?
It's not an online tool, but it's free nonetheless: https://github.com/itext/i7j-rups
annotated-pdf-spec
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Show HN: I am building a new Python library to read/write PDF files
As others have already written, there are many slightly invalid PDF files out there in the wild that many readers can display mostly fine and which your library should also be able to handle.
If you can, grab yourself a copy of the most recent PDF 2.0 specification since it contains much more information and is much more correct in terms of how to implement things. Also have a look at the errata at https://pdf-issues.pdfa.org/32000-2-2020/index.html.
As I'm implementing a PDF library (in Ruby), I have started to collect some situations that arise in the wild but are not spec-compliant, see https://github.com/gettalong/annotated-pdf-spec. That might help you in parsing some invalid PDFs
What are some alternatives?
PyMuPDF - PyMuPDF is a high performance Python library for data extraction, analysis, conversion & manipulation of PDF (and other) documents.
pdfquery - A fast and friendly PDF scraping library.
pdfsyntax - A Python library to inspect and modify the internal structure of a PDF file
djot - A light markup language
kaitai_struct_formats - Kaitai Struct: library of binary file formats (.ksy)
betterwrite - :bookmark_tabs: A Creative Word Processor.
bericht - Incremental HTML to PDF converter.
pandoc - Universal markup converter
polyfile - A pure Python cleanroom implementation of libmagic, with instrumented parsing from Kaitai struct and an interactive hex viewer
mupdf - mirrored from git://git.ghostscript.com/mupdf.git