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<!-- Automatically generated by emacsconf-publish-before-page -->
[[!toc ]]
Format: 35-min talk ; Q&A: BigBlueButton conference room Etherpad: <https://pad.emacsconf.org/2025-reader>
Etherpad: <https://pad.emacsconf.org/2025-reader>
Status: Q&A to be extracted from the room recordings
# Talk
<div class="vid mainVideo"><video controls preload="none" id="mainVideo-reader"><source src="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--main.webm" />captions="""<track label="English" kind="captions" srclang="en" src="/2025/captions/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--main.vtt" default />"""<track kind="chapters" label="Chapters" src="/2025/captions/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--main--chapters.vtt" /><p><em>Your browser does not support the video tag. Please download the video instead.</em></p></video>[[!template id="chapters" vidid="mainVideo-reader" data="""
00:00.720 An introduction to the Emacs reader
00:44.760 Yet another document viewer in Emacs?
02:05.760 Architecture of Emacs Reader
06:00.280 A word on dynamic modules
07:39.560 Features of Emacs Reader
07:56.760 Memory efficiency
11:18.720 Performance and speed
14:23.680 Scanned PDFs
17:08.960 System-level multi-threading
23:44.240 Native Emacs integrations
25:10.340 (Naive) dark mode
26:01.140 Challenges and further improvements
29:14.272 What Emacs can learn?
32:32.300 Contributing to the development
33:35.520 Acknowledgements
"""]]<div></div>Duration: 34:37 minutes<div class="files resources"><ul><li><a href="https://pad.emacsconf.org/2025-reader">Open Etherpad</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--intro.vtt">Download --intro.vtt</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--intro.webm">Download --intro.webm</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--main--chapters.vtt">Download --main--chapters.vtt</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--main.opus">Download --main.opus (30MB)</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--main.png">Download --main.png</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--main.vtt">Download --main.vtt</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--main.webm">Download --main.webm (101MB)</a></li><li><a href="https://toobnix.org/videos/watch/35bda01a-fa14-4e2b-be6a-0cec03029ccc">View on Toobnix</a></li><li><a href="https://youtu.be/KQBXTSg_Occ">View on Youtube</a></li></ul></div></div>
# Q&A
<div class="vid qanda"><video controls preload="none" id="qanda-reader"><source src="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--answers.webm" />captions="""<track label="English" kind="captions" srclang="en" src="/2025/captions/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--answers.vtt" default />"""<track kind="chapters" label="Chapters" src="/2025/captions/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--answers--chapters.vtt" /><p><em>Your browser does not support the video tag. Please download the video instead.</em></p></video>[[!template id="chapters" vidid="qanda-reader" data="""
00:00.000 Q: Is there scope for integrating the C library into Emacs itself with muPDF becoming an optional dependency?
00:59.880 Q: The dynamic modules sound great, and it's amazing they're there since 2017. Why is it so slow to take off, do you think? Is there prior art with them?
03:02.160 Q: How is pdf-tools difficult to install? I install it using the built in package manager.
04:41.201 Q: What tool(s) did you use to measure the memory usage between the three packages?
05:49.400 Q: How is the conversion between ELisp and the foreign language type system done? For example when interfacing with a C++ library that makes heavy use of C++ object system and templates?
08:17.280 Q: Can one look at pdf metadata with emacs-reader? Can annotations be added? Does it understand forms? Can it handle encrypted pdfs?
09:28.800 Q: How can I associate ODT files to open with emacs-reader?
10:26.000 Q: If a pdf file is open in emacs-reader and I regenerate the pdf with some changes, does emacs-reader actually refresh the pdf on its own or do I have to reload the pdf?
11:49.753 Q: What are the challenges with integrating with SyncTeX and AucTeX? This would be great to see as pdf-tools handles this well.
12:35.009 Q: Will you be giving another talk on the architecture you went over? A deep-dive there would be awesome.
12:59.765 Q: Is there search functionality? Something like isearch and occur?
13:30.640 Q: Does dynamic module prevent customization that Elisp usually provide? (Advices, Hooks, etc).
15:31.960 Q: Do you usually create an Elisp shim from the FFI and then use them with Elisp code?
16:44.640 Q: Is searching on the roadmap? Or is it already available as a feature?
17:48.160 Q: Will there be occur-like searching?
18:28.160 Q: What is your timing expectation for it to appear on ELPA?
"""]]<div>Listen to just the audio:<br /><audio controls preload="none" id="qanda-reader-audio" src="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--answers.opus"></audio></div><div></div>Duration: 19:02 minutes<div class="files resources"><ul><li><a href="https://pad.emacsconf.org/2025-reader">Open Etherpad</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--answers--chapters.vtt">Download --answers--chapters.vtt</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--answers.json">Download --answers.json</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--answers.m4v">Download --answers.m4v (82MB)</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--answers.opus">Download --answers.opus (17MB)</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--answers.tsv">Download --answers.tsv</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--answers.txt">Download --answers.txt</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--answers.vtt">Download --answers.vtt</a> (unedited)</li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-reader--an-introduction-to-the-emacs-reader--divy--answers.webm">Download --answers.webm (77MB)</a></li><li><a href="https://toobnix.org/videos/watch/af535112-81e5-4812-8a49-d0a37900affe">View on Toobnix</a></li><li><a href="https://youtu.be/lo4eZJNzUAs">View on Youtube</a></li></ul></div></div>
# Description
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