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410 bytes added ,  09:37, 23 September 2022
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add overleaf hint
** same-ID fields on different pages must be synchronized
** custom checkmarks/radiobuttons should work & display correctly
** [[Widgets#JavaScript|JS ]] for calculations]]and validation
* for '''annotations''' (correction workflow; generally just nice to have):
** similar to Adobe/Foxit Reader
* suggestion by Hans: based on [https://mupdf.com MuPDF], even if it’s controlled by the Artifex company, since it’s good code and there’s also [https://mujs.com MuJS].
* another candidate would be [https://okular.kde.org Okular], since that’s the open source viewer that supports most of the wanted features.
* [https://github.com/mozilla/pdf.js pdf.js], included in Firefox (as well as other browsers, editor plugins etc.) already meets most criteria.
* should at least work on Windows, MacOS (preferably 10.14+), Linux and *BSD; iOS & Android versions would be nice
* could use our [https://build.contextgarden.net build farm]
* There was a discussion about fundraising at the 2022 meeting. (Will check back.)
* DANTE only funds nonpersonnel costs and won’t support projects that are not directly TeX-related.
* Ask [https://overleaf.com Overleaf] WRT extensions for pdf.js
= Sources =
* Michal Vlasak’s [https://dspace.cvut.cz/handle/10467/95065 bachelor thesis] about multimedia in PDF (in Czech); [https://meeting.contextgarden.net/2021/talks/2021-09-22/multimedia-context-presentation.pdf presentation of the results] (in English)
* [[User:Hraban|Hraban]] ([[User talk:Hraban|talk]])’s [https://meeting.contextgarden.net/2021/talks/2021-09-22/pdfviewers.ods overview of PDF viewer features] on Linux and MacOS (ODS table in German)
* [https://blog.mozilla.org/attack-and-defense/2021/10/14/implementing-form-filling-and-accessibility-in-the-firefox-pdf-viewer/ Mozilla about pdf.js] (forms incl. JS & XFA, Tagged PDF)

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