New blog post on The Signal because who doesn't want new/updated format descriptions for the holidays! New entries for APNG and YAML (rhymes with camel and you are welcome for that knowledge drop) and some updates for MXF, PNG and PDF variants (incl PDF/A-4e and PDF/A-4f). #digipres #fileformats
https://blogs.loc.gov/thesignal/2025/12/file-format-flair/?loclr=eadpb
✨Bringing light to #FileFormats ✨
Tough on the outside with food for thought inside!
File formats reveal a lot about the different meanings of an object.
CPP-008 and CPP-010 help you uncover them through #FileFormatIdentification and #FileFormatValidation:
http://tiny.cc/cpp-desc
@Etnaphele for those that shoot and spend time editing raw files, what do you do to your pictures?
I don't think I've touched a single raw #photo file in 2025 so far.
#photography #software #imageediting #fileformats #jpeg #raw
The Zettabyte File System ZFS
#Innovations #Bash #CommandPrompt #FileFormats #FileSystem #ZettabyteFileSystem
https://gtechbooster.com/the-zettabyte-file-system-zfs/?fsp_sid=246
Guidelines for the design of #fileformats by @tajpulo
https://lukas-prokop.at/articles/2025-08-05-guidelines-for-design-of-fileformats
Peeking Inside Gigantic Zips with Only Kilobytes
https://ritiksahni.com/blog/peeking-inside-gigantic-zips-with-only-kilobytes/
#HackerNews #Peeking #Inside #Gigantic #Zips #with #Only #Kilobytes #datacompression #fileformats #technology #programming #HackerNews
Sure, we've all seen Mark YAML and even JSON Statham, but have y'all met TOML Holland yet?
Ah, the "Binary Formats Gallery"—because what the world really needed was a #museum for file formats, complete with GraphViz diagrams and hex dump visualizers! 🤓🖥️ I mean, who doesn't want to spend their Sunday afternoon compiling Kaitai Struct libraries just to admire the metadata of a Quake 2 model? 🌟🔍
https://formats.kaitai.io/ #BinaryFormatsGallery #FileFormats #TechArt #KaitaiStruct #Quake2 #HackerNews #ngated
Revisiting bsdiff as a tool for digital preservation
by @beet_keeper
I introduced bsdiff in a blog in 2014. bsdiff compares the differences between two files, e.g. broken_file_a and corrected_file_b and creates a patch that can be applied to broken_file_a to generate a byte-for-byte match for corrected_file_b.
On the face of it, in an archive, we probably only care about corrected_file_2 and so why would we care about a technology that patches a broken file?
In all of the use-cases we can imagine the primary reasons are cost savings and removing redundancy in file storage or transmission of digital information. In one very special case we can record the difference between broken_file_a and corrected_file_b and give users a totally objective method of recreating corrected_file_b from broken_file_a providing 100% verifiable proof of the migration pathway taken between the two files.
#ac3 #archives #audio #audiovisual #audit #authenticity #av #bash #bsdiff #checksums #code4lib #corruption #corruptionIndex #digipres #digitalArchiving #digitalForensics #digitalLiteracy #digitalPreservation #digitalStorage #diplomatics #fileFormats #glitch #glitchAudio #glitchart #integrity #preservationAnalysis #preservationMetadata #provenance #sensitivityIndex #storage
They really fucked up with the new #fileformats. Why even call it #webp. Just put the #png extension on it and no one would have to know if you made it backward compatible, your moronic apes. Just put #jpeg at the end of #jxl files.
Dumbass engineers they should hire me. I could have told them this.
Why 7-Zip is the Go-To Software for High-Ratio Compression and Encryption
#Tips #7Zip #Compression #DataArchiving #Decryption #Encryption #FileFormats
https://gtechbooster.com/why-7-zip-is-the-go-to-software-for-high-ratio-compression-and-encryption/?fsp_sid=51
Ah, #SQLite, the digital hipster's favorite minimalist coffee shop disguised as a database engine ☕📚. Who knew file formats could be romanticized with so much technical jargon that even the table of contents needs its own table of contents? 😜✨ Just remember, if it's small, fast, AND reliable, you're probably dreaming—or reading SQLite's wishful documentation. 🚀
https://www.sqlite.org/fileformat.html #Minimalism #CoffeeShop #TechJargon #DatabaseEngine #FileFormats #HackerNews #ngated
JSONL now supported by JSONID and the first two JSONL rulesets making 80 strong in the registry. JSON, YAML, TOML, fully enabled. Check it out here:
https://github.com/ffdev-info/jsonid
https://ffdev-info.github.io/jsonid/registry/
#JSONID #FileFormatIdentification #FileFormats #JSONL #digipres
War of the Worlds might be a must movie for data nerds. The trailer alone "Data is their food"!!
https://www.youtube.com/watch?v=oIXFOlTyhHI
It's like someone saw ID4 and said, yeah, I get it, the Aliens really can understand arbitrary data streams -- let's go all in on that!
A solid 2/10 stars -- but in a good way!!
(Although, maybe try and ignore some of the amazon stuff -- in their wildest dreams they're surviving the apocalypse)
@rodolforg @davidrevoy How about Portable Document Format (PDF)? It can hold layers, which can be shown or hidden as desired. Put the comic image on a bottom layer, then translation texts in various languages on front layers. #comics #i18n #FileFormats
I have three .avi files that have identical size but different md5sum.
A simple binary diff tells me that there are a couple of single-byte differences. Is there some kind of tool that would allow me to tell what those differences amount to? (Video, audio, whatever else?)
EDIT: SOLVED, see below
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! #fileformats #digipres https://blogs.loc.gov/thesignal/2025/07/rfs-updates-2025-2026/?loclr=eadpb
I'm wondering if there is a image file format that allows to embed translated text.
Useful for a lot of stuff, including comics.
@davidrevoy do you know any?
The @w3c recently released version 3 of the #PNG spec more than 2 decades after version 2 was released in 2003. The new spec largely makes official various extensions already in use like animated PNGs, HDR support, and EXIF metadata, so many browsers and graphics apps already largely support it.
Here’s an article by Chris Blume, who is the chair of the W3C PNG Working Group: https://www.programmax.net/articles/png-is-back/
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