[NTG-context] Tagged PDF Best Practice Guide: Syntax
https://www.pdfa.org/resource/tagged-pdf-best-practice-guide-syntax/ -- luigi ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
[NTG-context] Tagged PDF - Standard structure type for list elements
Hi,
I have found a small bug in line 62 of strc-tag.lua:
item = { pdf = Li, nature = display },
The standard structure type for list elements is LI not Li. Please
correct the line to
item = { pdf = LI, nature = display },
A minimal example to reproduce is:
\setuptagging[state=start]
\starttext
\startitemize
\item One
\stopitemize
\stoptext
I am using ConTeXt Version 2014.05.27 13:38.
Thanks,
Christoph
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[NTG-context] Tagged PDF - Math
Hi,
ConTeXt can produce tagged PDF - this is really cool! (At the moment
ConTeXt/luaTeX seems to be the only macropackage/TeX-engine that is able to
do this.)
What is the status of producing structure information for math? After a
quick evaluation I observe two issues:
1. Empty entry in RoleMap:
ConTeXt wisely uses the RoleMap entry of the StructTreeRoot element in a
PDF to map structure element names to standard element names. In PDF terms,
RoleMap is a dictionary with keys and values. Unfortunately, certain math
elements seem to lead to a corrupt RoleMap, e.g., the usage of a square
root results in an empty dictionary key with corresponding value \Span. A
minimal example is:
\setuptagging[state=start]
\starttext
\startformula
\sqrt{A}
\stopformula
\stoptext
2. Structure element contains index of type real number:
According to the PDF Reference V 1.7 (see Table 10.10) a structure element
dictionary's K entry can be an integer (e.g. 2) that denotes an index
for a marked-content sequence. When tagging math, ConTeXt sometimes
produces a real value (e.g. 2.000) instead. A minimal example is: (In
this example the last element B receives such a real number index)
\setuptagging[state=start]
\starttext
\startformula
A = B
\stopformula
\stoptext
I am using ConTeXt version 2014.05.27 13:38.
Thanks in advance for any feedback.
Christoph
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Re: [NTG-context] Tagged PDF - Math
On 5/30/2014 9:33 AM, Christoph Reller wrote:
Hi,
ConTeXt can produce tagged PDF - this is really cool! (At the moment
ConTeXt/luaTeX seems to be the only macropackage/TeX-engine that is able to
do this.)
What is the status of producing structure information for math? After a
quick evaluation I observe two issues:
1. Empty entry in RoleMap:
ConTeXt wisely uses the RoleMap entry of the StructTreeRoot element in a
PDF to map structure element names to standard element names. In PDF terms,
RoleMap is a dictionary with keys and values. Unfortunately, certain math
elements seem to lead to a corrupt RoleMap, e.g., the usage of a square
root results in an empty dictionary key with corresponding value \Span. A
minimal example is:
\setuptagging[state=start]
\starttext
\startformula
\sqrt{A}
\stopformula
\stoptext
2. Structure element contains index of type real number:
According to the PDF Reference V 1.7 (see Table 10.10) a structure element
dictionary's K entry can be an integer (e.g. 2) that denotes an index
for a marked-content sequence. When tagging math, ConTeXt sometimes
produces a real value (e.g. 2.000) instead. A minimal example is: (In
this example the last element B receives such a real number index)
\setuptagging[state=start]
\starttext
\startformula
A = B
\stopformula
\stoptext
I am using ConTeXt version 2014.05.27 13:38.
Thanks in advance for any feedback.
fixed in next beta
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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wiki : http://contextgarden.net
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[NTG-context] Tagged PDF
Hi everyone, in my quest to generate tagged pdf's that meet nowaday's accessibility requirements (it seems to me that tags are the major hurdle when using tex), I came around context. There is a very interesting article on how to generate tagged pdf's with context mkiv. http://www.tug.org/TUGboat/tb31-3/tb99hagen.pdf A quick sample run of the examples shown in the above pdf with context however doesn't yield a nice result. Checking with the pdf accessibility checker http://www.access-for-all.ch/en/pdf-lab/pdf-accessibility-checker-pac.html for example, the generated pdf fails completely and is not considered to be tagged. Could someone point me in the right direction? Is there any kind of tutorial or minimal example from where I could work on? Are there any (hidden) options that need to be set in order to activate tagging support? kind regards ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Tagged PDF
On Wed, 14 Aug 2013, D. K. wrote: Hi everyone, in my quest to generate tagged pdf's that meet nowaday's accessibility requirements (it seems to me that tags are the major hurdle when using tex), I came around context. There is a very interesting article on how to generate tagged pdf's with context mkiv. http://www.tug.org/TUGboat/tb31-3/tb99hagen.pdf A quick sample run of the examples shown in the above pdf with context however doesn't yield a nice result. Checking with the pdf accessibility checker http://www.access-for-all.ch/en/pdf-lab/pdf-accessibility-checker-pac.html for example, the generated pdf fails completely and is not considered to be tagged. Could someone point me in the right direction? Is there any kind of tutorial or minimal example from where I could work on? Are there any (hidden) options that need to be set in order to activate tagging support? Have you seen http://wiki.contextgarden.net/PDFX Aditya ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Tagged PDF
Am 15.08.2013 09:05, schrieb Aditya Mahajan: On Wed, 14 Aug 2013, D. K. wrote: Hi everyone, in my quest to generate tagged pdf's that meet nowaday's accessibility requirements (it seems to me that tags are the major hurdle when using tex), I came around context. There is a very interesting article on how to generate tagged pdf's with context mkiv. http://www.tug.org/TUGboat/tb31-3/tb99hagen.pdf A quick sample run of the examples shown in the above pdf with context however doesn't yield a nice result. Checking with the pdf accessibility checker http://www.access-for-all.ch/en/pdf-lab/pdf-accessibility-checker-pac.html for example, the generated pdf fails completely and is not considered to be tagged. Could someone point me in the right direction? Is there any kind of tutorial or minimal example from where I could work on? Are there any (hidden) options that need to be set in order to activate tagging support? Have you seen http://wiki.contextgarden.net/PDFX Tagging is part of PDF/A, but the interface is the same. pdf/a-1a:2005 and pdf/a-1b:2005 are the used 'format' names for PDF/A. Never used it myself, so I can't tell much about it. Peter ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Tagged PDF
Hello all First of all I must say that I am a complete newbie to the TeX world. I am evaluating Context for generation of PDFs for educational use. We aim to produce PDFs that are accessible to screen reader users and for that reason we would like to create tagged PDFs. My initial experiments with tagged PDF have so far been unsuccessful. I am using ConTeXT standalone, (ConTeXT ver: 2012.07.07 MKIV fmt:2012.7.8 int: english/english ). I am using this tex file as a test input (have left in line breaks in case that is significant): \setupstructure[state=start] \starttext \startbodymatter \startchapter[title=Chapter 1] The quick brown fox jumped over the lazy dog. \stopchapter \startchapter[title=Chapter 2] Now is the time for all good people to come to the aid of the party. \stopchapter \stopbodymatter \stoptext When I open the resulting PDF in Adobe Acrobat 10.0.3 and show the tags navigation pane, it says No tags available. Can anyone suggest what I am doing wrong? Paul Wray ** This message is intended for the addressee named and may contain privileged information or confidential information or both. If you are not the intended recipient please delete it and notify the sender. ** ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Tagged PDF
On Tue, Jul 10, 2012 at 7:56 AM, Wray, Paul paul.w...@det.nsw.edu.au wrote: We aim to produce PDFs that are accessible to screen reader users and for that reason we would like to create tagged PDFs. I would also like to see tagged PDFs because I use Indic scripts which have a non-linear character-glyph correspondence, so without tags PDF content is not copy-pastable to other applications. I would also like to be able to enable tagged PDF production where the underlying character sequences is embedded in the PDF. I understand this will increase the PDF size and it is not an issue for me, but being able to copy-paste is. Thanks! -- Shriramana Sharma ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Tagged PDF
On 10-7-2012 04:26, Wray, Paul wrote: \setupstructure[state=start] it's \setuptagging[state=start] - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Tagged PDF
Thanks, that works now. I will also need to emit accessible alternate text for images, but this is not a tag in its own right, it appears to be an attribute of the figure tag. Is this possible? Paul -Original Message- From: Hans Hagen [mailto:pra...@wxs.nl] Sent: Tuesday, 10 July 2012 6:04 PM To: mailing list for ConTeXt users Cc: Wray, Paul Subject: Re: [NTG-context] Tagged PDF On 10-7-2012 04:26, Wray, Paul wrote: \setupstructure[state=start] it's \setuptagging[state=start] - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ** This message is intended for the addressee named and may contain privileged information or confidential information or both. If you are not the intended recipient please delete it and notify the sender. ** ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Tagged PDF
Am 08.03.2011 um 20:14 schrieb Cecil Westerhof: Is it possible to make tagged PDF's with ConTeXt? Yes but you need mkiv. You need \setupstructure[state=start] at the begin to enable it. It’s also important to use the start/stop commands (e.g. \startchapter) for headings. Wolfgang ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Tagged PDF
2011/3/8 Wolfgang Schuster schuster.wolfg...@googlemail.com Is it possible to make tagged PDF's with ConTeXt? Yes but you need mkiv. You need \setupstructure[state=start] at the begin to enable it. It’s also important to use the start/stop commands (e.g. \startchapter) for headings. Okay, thanks. I first need to 'finish' my e-book. But it is good to know that I can create tagged PDF documents. (Handy for PDA's and the like.) I see that I really need to upgrade to MKIV. Let's put a higher priority on that. ;-} -- Cecil Westerhof ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] tagged pdf broken
On 29-9-2010 10:41, Steffen Wolfrum wrote: Hi, in todays beta (20100929) the tagged pdf is broken! No tags are created and Preflight says: An error occurred while parsing a contents stream that's a side effect of a change in label mechanism (more generic as the letter module needs it own label namespace) and tags are a special (limited) variant of labels I'll fix it Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Tagged PDF
Am 20.01.2009 um 16:19 schrieb Arthur Reutenauer: Tagged PDF is indeed a problem for the moment, but it's clearly not the feature your printer asks for, and as a rule, you can be sure that if some functionality is essential to publishers, it will be added quickly to ConTeXt :-) Hi Hans, these wise words were written 1 1/2 years ago ... and publishers indeed more and more often ask for that! For me, the only way to do tagging is with AcrobatPro. But as LuaTeX made so much progress in the last 18 month, maybe is there also some break-through on this topic? Steffen ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Tagged PDF
--- Original message --- Subject: Tagged PDF From: Steffen Wolfrum cont...@st.estfiles.de To: mailing list for ConTeXt users ntg-context@ntg.nl Cc: Hans Hagen pra...@wxs.nl Date: Monday, 28/06/2010 7:17 AM Am 20.01.2009 um 16:19 schrieb Arthur Reutenauer: Tagged PDF is indeed a problem for the moment, but it's clearly not the feature your printer asks for, and as a rule, you can be sure that if some functionality is essential to publishers, it will be added quickly to ConTeXt :-) Hi Hans, these wise words were written 1 1/2 years ago ... and publishers indeed more and more often ask for that! For me, the only way to do tagging is with AcrobatPro. But as LuaTeX made so much progress in the last 18 month, maybe is there also some break-through on this topic? no as i don't need it and it's not something you implement for fun (only as part of a project) .. it's quite doable (unrelated to luatex i think) but boring Hans ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
