annotated-pdf-spec
i7j-rups
annotated-pdf-spec | i7j-rups | |
---|---|---|
1 | 3 | |
5 | 248 | |
- | 0.8% | |
10.0 | 5.3 | |
about 2 years ago | 12 days ago | |
Java | ||
- | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
annotated-pdf-spec
-
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
i7j-rups
-
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
-
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
-
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
What are some alternatives?
pdfquery - A fast and friendly PDF scraping library.
PyMuPDF - PyMuPDF is a high performance Python library for data extraction, analysis, conversion & manipulation of PDF (and other) documents.
pdfsyntax - A Python library to inspect and modify the internal structure of a PDF file
djot - A light markup language
betterwrite - :bookmark_tabs: A Creative Word Processor.
kaitai_struct_formats - Kaitai Struct: library of binary file formats (.ksy)
pandoc - Universal markup converter
bericht - Incremental HTML to PDF converter.
mupdf - mirrored from git://git.ghostscript.com/mupdf.git
polyfile - A pure Python cleanroom implementation of libmagic, with instrumented parsing from Kaitai struct and an interactive hex viewer