I have difficulties finding PDF/A-1, PDF/A-2, PDF/A-3 specifications. Is there one? Or is it just description of what it has? There is no trouble finding version(v1.4...v1.7) specifications.
Thanks in advance.
Yes, there are of course, but you have to buy them from ISO,
e.g. here for PDF/A-1
Then Links are at the bottom of the relevant Wikipedia Article
Related
In particular, I am trying to customize a .ctt file from the Curriculum Course Scheduling example file to fit my own school's timetable scenario. I could not find any documentation on customizing a .ctt file for import. If you advise another approach, I welcome alternatives. I appreciate any guidance as I am approaching the tool with minimal Java experience. Many thanks!
The ctt format description is in the PDF you can download from the ITC2007 website.
In this question, mkl provides a fantastic answer to pnj's predicament. We are unfortunately facing a very similar issue (with a different font called Lohit - Devanagari, but still a Devanagari font) The second comment outlines the non-OCR solution steps beautifully, but I suffer from a huge lacuna in my understanding of PDFs and their structure. As such, it would be great if some direction can be given in terms of the following:
overwrite the ToUnicode map in this PDF using a general purpose PDF library with a low-level object access API for a programming language of your choice: What library in Python can I use to do this?
traversing the PDF object structure, finding the ToUnicode map stream, replacing its content, and saving the result.: Is there some example where I can see how exactly this is done for any font out there?
I hope this isn't too broad. Thank you!
I did my research around this topic, I understand in many countries there are legal reasons of not having this. But I have a requirement and need to have display for an external signature on each page. Any working approach/snippet will be highly appreciated.
Also is it possible to help annotations on each page for an existing signature? If yes, any code snippet will be helpful.
I would like to know on how wikipedia (http://en.wikipedia.org/) creates PDF? It seem to be using some application at the back-end. Could anyone please let me know on how this is done?
Thanks
Srikanth
Wikipedia runs Mediawiki.
A Google check tells me that they have two PDF extensions.
This one is the one who's still mantained: PDF_Writer
It doesn't use a PHP HTML→PDF generator, (though there are some)
It actually does something trickier and more clever.
The PDF Writer uses the Python Reportlab libraries to generate PDF based on a
DOM derived from parsing mediawiki-markup using the mwlib parser.
To confirm ZJR's answer, these are the document properties:
Can someone please explain what a "Tagged PDF" is, and how it differs from regular, non-tagged PDF?
Will tagged PDFs contain special content, such as XML, Rich Media, Javascript, or the like?
Which TeX-toolchains generate Tagged PDFs?
Tagged PDF is a PDF file that contains meta-information around certain groups of PDF instructions inside a page content. This meta-information has many use cases: Text-extraction, content-reflow, document accessibility, geographic information in PDF containing maps, etc.
If you need to know more details about this topic I would recommend reading Chapter 10 - Document Interchange of Adobe PDF Reference version 1.7.
The main reason it is used is for accessibility. With the correct tags, a screen reader (for a blind person) can understand where headings fall, what is a table/footnote/graphic and so on. Also there is a feature called PDF Article Threading which is useful for magazine or newspaper layouts where an article is split across boxes/pages.