Lmst

The lossless data compression fairies are having fun with me today...

Scan 8.5" x 11" document at 1200dpi @ greyscale
-> 60 MiB PNG, thank you
Open PNG in GIMP, select a good threshold point, convert to 1bpp
-> 514 KiB PNG
Wait... 116:1 compression from 8-bit PNG to 1-bit PNG? HOW??
convert to pdf
"Warning, this file is really huge and may actually be a decompression bomb" lol, ok.
-> 515 KiB PDF, nice
ocrmypdf foo.pdf document.pdf
-> 194 KiB PDF
WHAT? HOW?!?
pdfimages -png document.pdf foo
-> 514 KiB PNG
WHAT IS HAPPENING?!?

New Halide blog post on post-processing for chroma as it is relevant to compression efficiency: https://halide.cx/blog/chroma-handling

Seems like you can get a roughly 2% efficiency improvement with 4:2:0 decoder output just with smarter post-processing for chroma. Pretty neat!

#avif #webp #jpeg #transcoding #compression

Latest hack: A spatial domain variable block size luma dependent chroma compression algorithm

https://www.bitsnbites.eu/a-spatial-domain-variable-block-size-luma-dependent-chroma-compression-algorithm/

#image #compression

Variable block size chroma compression of parrots

My notes from January 2026: started a new job at Ghost, published a WebAssembly module, set every Vim configuration option, and applauded general strikes. https://evanhahn.com/notes-from-january-2026/

#WebAssembly #vim #ghost #strikes #compression

🚀 Thử thách mới: Nén 1 triệu hàng dữ liệu thành kích thước nhỏ nhất có thể! Tham gia và chia sẻ giải pháp tối ưu. #Programming #Compression #Challenge #NénDữLiệu #LậpTrình

https://www.reddit.com/r/programming/comments/1qqx086/challenge_to_compress_1m_rows_to_the_smallest/

jakub (@jakub_works)

Kimi Moonshot(@Kimi_Moonshot)로 이미지를 생성한 뒤 Claude(cluadeai)의 'cowork' 기능을 사용해 파일 크기를 줄였다는 사례 공유. 수백 장의 생성 이미지 샘플을 언급하며, Claude가 이미지 생성과 파일 경량화를 함께 수행한 워크플로우에 대해 놀라움을 표현함.

https://x.com/jakub_works/status/2016626240782782529

#generativeai #imagegeneration #compression #claude #kimimoonshot

CompressO: l'alternativa #OpenSource (e leggerissima) per comprimere i tuoi #VIDEO
#compression @diggita @opensource #windows #macos #linux @computer

https://webappsmagazine.blogspot.com/2026/01/compresso-lalternativa-open-source-e.html

Компрессор для данных или как я написал свой первый custom transformer

Эта статья будет полезна DS специалистам, и тем, кто хоть когда-нибудь сталкивался с такой проблемой, как выбросы в данных или OOD (out of distribution), и ищет пути решения проблем, возникающих из-за них.

https://habr.com/ru/articles/988736/

#выбросы #анализ_данных #data_science #preprocessing #compression #outliner #custom_transformer #transformer #sklearn

SVT-AV1 4.0.0 is here!
Changelog: https://gitlab.com/AOMediaCodec/SVT-AV1/-/releases/v4.0.0
SVT-AV1-PSY's porting efforts are fully complete, and this release also features huge AVIF improvements. Maybe the most exciting release to date by my standards – SVT-AV1 is finally a real perceptual encoder!  #av1 #avif #compression

🎞🗜 #compression #vidéo #AV1 #ffmpeg
Comme promis : voici mes paramètres pour ré-encoder mes vidéos en AV1 (petite évolution par rapport à mon pouet précédent) avec l'explication de tous les paramètres.
https://sebsauvage.net/wiki/doku.php?id=ffmpeg#re-encodage_en_av1

J'ai aussi mis des exemples concrets de compression, avec taille résultante et durée d'encodage, histoire de se faire une idée.

Si vous voyez des erreurs, si vous aves des suggestions, je suis à l'écoute !

https://www.fogolf.com/1145583/high-compression-golf-balls-vs-low-compression-golf-balls-what-does-the-data-say/ High compression golf balls vs low compression golf balls. What does the data say? #BALLS #compression #Data #Golf #GOLFBALLTEST #GolfBalls #GolfBallsVideos #GolfBallsVlog #GolfBallsYouTube #GolfEquipment #GolfEquipmentVideos #GolfEquipmentVlog #GolfEquipmentYouTube #GolfMonthly #GolfTees #GolfTeesVideos #GolfTeesVlog #GolfTeesYouTube #High

Many people seem weirdly suspicious about Google's #Brotli compression while being weirdly chill about Facebook's #ZSTD, to the point of commenting on posts about Brotli compression being added to things to the effect of, "This is a conspiracy by Google, they clearly should've chosen ZSTD instead". What's up with that? Is Google really so much less scary than 𝘍𝘢𝘤𝘦𝘣𝘰𝘰𝘬?

(This is a subtweet about a certain HN post about Brotli compression coming to #PDF)

#compression #zstandard #computers

ISO PDF spec is getting Brotli – ~20 % smaller documents with no quality loss

https://pdfa.org/want-to-make-your-pdfs-20-smaller-for-free/

#HackerNews #ISO #PDF #Brotli #Compression #PDF #Optimization #Document #Size #Reduction #Quality #Preservation

JPEG XL Demo Page

https://tildeweb.nl/~michiel/jxl/

#HackerNews #JPEG #XL #Demo #Page #JPEG #XL #Image #Format #Demo #Image #Compression #Technology #Web #Development

CDN, by @httparchive.org:

https://almanac.httparchive.org/en/2025/cdn

#webalmanac #studies #research #metrics #contentdelivery #http #performance #httpheaders #compression #tls #hints

Bạn cần nén PDF 33 MB để gửi email? 🔧 Thử: 1️⃣ Adobe Acrobat – tốt nhưng đắt, chỉ dùng hiếm. 2️⃣ Tự host (Docker) – mất 2 giờ, không ổn. 3️⃣ pdfox – nén trong trình duyệt ~2 phút, tác giả tự làm MVP. Hiện pdfox .cloud chỉ desktop. #PDF #Compression #Tech #NénPDF #CôngCụ

https://www.reddit.com/r/SideProject/comments/1qi6kwm/3_pdf_compressors_i_tried_heres_what_worked/

https://www.fogolf.com/1138997/heres-the-ultimate-slice-fix-%e2%9c%85/ Here’s the ULTIMATE SLICE FIX ✅ #BallSpeed #ClubSpeed #compression #draw #fade #FAST #GolfSwing #hook #impact #PGAOfficialWorldGolfRanking #PGARanking #Posture #slice #Swing #YannikPaul