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#fileformats

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Kate Murray<p>New blog post about the Library of Congress 2025-2026 updates to the Recommended Formats Statement (RFS). A few changes to note related to Design and 3D formats (mostly just rescoping), updates to email-related metadata to better align with EA-PDF and continued work to document digital accessibility support in file formats listed as "acceptable" in the RFS. See the Change Log for all updates. Comments welcome! <a href="https://digipres.club/tags/fileformats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fileformats</span></a> <a href="https://digipres.club/tags/digipres" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>digipres</span></a> <a href="https://blogs.loc.gov/thesignal/2025/07/rfs-updates-2025-2026/?loclr=eadpb" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">blogs.loc.gov/thesignal/2025/0</span><span class="invisible">7/rfs-updates-2025-2026/?loclr=eadpb</span></a></p>
RodolfoRG<p>I'm wondering if there is a image file format that allows to embed translated text.<br>Useful for a lot of stuff, including comics.</p><p><span class="h-card" translate="no"><a href="https://framapiaf.org/@davidrevoy" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>davidrevoy</span></a></span> do you know any?</p><p><a href="https://mastodon.online/tags/comics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>comics</span></a> <a href="https://mastodon.online/tags/i18n" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>i18n</span></a> <a href="https://mastodon.online/tags/FileFormats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FileFormats</span></a></p>
Karl Voit :emacs: :orgmode:<p>Hilarious <a href="https://graz.social/tags/SMBC" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SMBC</span></a> on the <a href="https://graz.social/tags/plural" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>plural</span></a> of <a href="https://graz.social/tags/files" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>files</span></a>:<br><a href="https://www.smbc-comics.com/comic/plural-2" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">smbc-comics.com/comic/plural-2</span><span class="invisible"></span></a></p><p><a href="https://graz.social/tags/fun" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fun</span></a> <a href="https://graz.social/tags/file" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>file</span></a> <a href="https://graz.social/tags/fileformats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fileformats</span></a> <a href="https://graz.social/tags/PIM" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PIM</span></a></p>
stf<p>thought it might be nice to sign <a href="https://chaos.social/tags/sphinx" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sphinx</span></a> releases with <a href="https://chaos.social/tags/minisign" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>minisign</span></a> and <a href="https://chaos.social/tags/ssh" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ssh</span></a> <a href="https://chaos.social/tags/eddsa" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>eddsa</span></a> keys, straight outta sphinx. minisign <a href="https://chaos.social/tags/privkeys" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>privkeys</span></a> are okish (they do need 40 B of entropy, 8 extra for a "keyid"). but did you know, that in ssh the public key is stored 3x in the ed25519 private <a href="https://chaos.social/tags/key" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>key</span></a>? one time i can understand (could be 0 though), but 3 times? what have they been drinking? <a href="https://chaos.social/tags/fileformats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fileformats</span></a></p>
jonny (good kind)<p>literally who hurt genomics to make you all encode one specific kind of number as the ASCII characters from ! to ~ as an integer input to some logarithm function, but then others of you changed the function but kept encoding it as a single ASCII character ranging from -5 to 62 (???), and then later they decided that -5 to 62 was silly and so they changed that to 0-62 and throwing away half the original range for no reason, except actually it's 0-40 by convention.</p><p>did anyone consider "encoding it as a number"</p><p><a href="https://doi.org/10.1093/nar/gkp1137" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">doi.org/10.1093/nar/gkp1137</span><span class="invisible"></span></a></p><p><a href="https://neuromatch.social/tags/DataStandards" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DataStandards</span></a> <a href="https://neuromatch.social/tags/FileFormats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FileFormats</span></a> <a href="https://neuromatch.social/tags/Genomics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Genomics</span></a></p>
Thorsted<p>Got my first PDF 2.0 file into my repository. Didn’t know Word was saving to the new format! <a href="https://digipres.club/tags/digipres" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>digipres</span></a> <a href="https://digipres.club/tags/fileformats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fileformats</span></a> <a href="https://digipres.club/tags/wtfPDF" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>wtfPDF</span></a></p>
petersuber<p>Update. Again this year <span class="h-card" translate="no"><a href="https://bird.makeup/users/librarycongress" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>librarycongress</span></a></span> recommends <a href="https://fediscience.org/tags/XML" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>XML</span></a> and <a href="https://fediscience.org/tags/EPUB" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EPUB</span></a> over <a href="https://fediscience.org/tags/PDF" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PDF</span></a>. (Scroll to I.ii.B.)<br><a href="https://www.loc.gov/preservation/resources/rfs/text.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">loc.gov/preservation/resources</span><span class="invisible">/rfs/text.html</span></a> </p><p><a href="https://fediscience.org/tags/FileFormats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FileFormats</span></a> <a href="https://fediscience.org/tags/Formats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Formats</span></a></p>
Luke Pembleton<p>What’s your file extension preference when saving a JPEG? </p><p><a href="https://genomic.social/tags/fileformats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fileformats</span></a></p>
Serge from Babka<p>I'm looking for a file format that will let me embed text blocks along with key value pairs and is somewhat standard.</p><p>I don't like yaml because it handles text blocks clumsily.<br>Markdown is "ok" but it means I need a custom parser for the key/value pairs if they're embedded (not in the frontmatter.<br>JSON5 is "ok I guess".</p><p>Any ideas?</p><p><a href="https://babka.social/tags/FileFormats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FileFormats</span></a></p>
Adam ♿<p>Where do I see the file/format/disc header found in <a href="https://ia800200.us.archive.org/26/items/BMUG-TVRToo-Update/TVR%20Too%20Update.iso" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">ia800200.us.archive.org/26/ite</span><span class="invisible">ms/BMUG-TVRToo-Update/TVR%20Too%20Update.iso</span></a> (<a href="https://archive.org/details/BMUG-TVRToo-Update" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">archive.org/details/BMUG-TVRTo</span><span class="invisible">o-Update</span></a>)</p><p>It's not ISO9660 but I don't know the right keywords to search for much older CD formats.</p><p><a href="https://aus.social/tags/FileFormats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FileFormats</span></a> <a href="https://aus.social/tags/SoftwareHistory" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SoftwareHistory</span></a> <a href="https://aus.social/tags/SoftwareArchaeology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SoftwareArchaeology</span></a> <a href="https://aus.social/tags/ReverseEngineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ReverseEngineering</span></a> <a href="https://aus.social/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RetroComputing</span></a></p><p>Previously this asked: Does anyone recognise a file header of 42 44 AA 25? But I don't think this is the actual file header.</p>
Thorsted<p><a href="https://digipres.club/tags/fileformats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fileformats</span></a> <a href="https://digipres.club/tags/digipres" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>digipres</span></a> <a href="https://digipres.club/tags/moviemagic" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>moviemagic</span></a></p>
petersuber<p>Very glad to see the <a href="https://fediscience.org/tags/arXiv" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>arXiv</span></a> steps toward <a href="https://fediscience.org/tags/accessibility" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>accessibility</span></a> (<a href="https://fediscience.org/tags/a11y" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>a11y</span></a>). These include "offering well-formatted <a href="https://fediscience.org/tags/HTML" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HTML</span></a>, alongside <a href="https://fediscience.org/tags/PDF" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PDF</span></a> and <a href="https://fediscience.org/tags/TeX" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TeX</span></a> source."<br><a href="https://blog.arxiv.org/2023/01/19/access-is-not-the-same-as-accessibility-a-framework-for-making-research-papers-truly-open/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">blog.arxiv.org/2023/01/19/acce</span><span class="invisible">ss-is-not-the-same-as-accessibility-a-framework-for-making-research-papers-truly-open/</span></a></p><p>PS: There are 𝘮𝘢𝘯𝘺 reasons to offer well-formatted HTML alongside PDF, or to stop PDF-only publishing. Accessibility is first, followed closely by making work friendly to mobile users, users with low bandwidth, and users who need to text-mine, cut/paste, or use machine translation.</p><p><a href="https://fediscience.org/tags/Formats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Formats</span></a> <a href="https://fediscience.org/tags/FileFormats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FileFormats</span></a></p>