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Aujourd’hui — 24 octobre 2025Flux principal

Quand Amazon transforme vos ebooks en manuscrits médiévaux impossible à déchiffrer ou presque

Par : Korben
17 octobre 2025 à 14:19

Voici l’histoire de Pixelmelt, un développeur qui voulait simplement sauvegarder en local un ebook acheté sur Amazon pour le lire avec une autre app parce que l’app Kindle d’Android a crashé une fois de trop à son goût.

Mais c’est impossible. Pas de bouton download, pas d’export, que dalle… Même si vous avez acheté le livre, c’est Amazon qui décide de comment et de quand vous pouvez le lire.

Bref, frustré, il se tourne alors vers le Kindle Cloud Reader, la version web de l’app. Et là, il découvre un truc incroyable ! Amazon a créé un système d’obfuscation tellement complexe qu’il ressemble aux techniques de cryptographie des manuscrits anciens. Mais siii, vous savez, ces textes enluminés que seuls les moines pouvaient déchiffrer au Moyen-Âge. Amazon a réinventé le concept en version numérique.

Pour fonctionner, le Kindle Cloud Reader utilise un endpoint de rendu qui nécessite plusieurs tokens d’authentification. Déjà c’est pas simple. Mais ça se corse un peu plus quand on regarde le texte qui s’affiche car ce ne sont pas des lettres ! Ce sont des glyphes, essentiellement des séries de coordonnées qui dessinent une lettre. Ainsi, au lieu de stocker le caractère ‘T’, Amazon stocke “glyphe 24” qui correspond à une forme dessinée via des commandes SVG. Et ces glyphes changent de mapping toutes les 5 pages, un peu comme un codex (coucou Dan Brown ^^) où l’alphabet se transforme à tous les chapitres.

Du coup, pour son livre de 920 pages, il a fallu faire 184 requêtes API distinctes. Chaque requête récupère un nouveau jeu de glyphes soit au total 361 glyphes uniques découverts, et 1 051 745 glyphes à décoder. Oui, ça fait plus d’un million de symboles à traduire pour lire un seul livre.

Amazon a même ajouté des pièges comme des micro-opérations MoveTo complètement inutiles dans les SVG qui s’affichent parfaitement dans le navigateur mais cassent toute tentative de parsing automatique. C’est de l’anti-scraping placé là volontairement, comme des fausses pistes dans des cryptogrammes médiévaux destinées à tromper les copistes non autorisés.

Face à ce délire, notre développeur est alors devenu malgré lui un crypto-archéologue. Sa méthode a donc été de comparer pixel par pixel chaque caractères, valider chaque hypothèse, pour tout reconstruire patiemment. Je vous passe les détails techniques mais il a sorti chaque glyphe SVG sous la forme d’une image, puis a comparé ces images pour trouver leur correspondance avec les vraies lettres en utilisant un outil (SSIM) qui simule la perception humaine pour évaluer la similarité entre deux images.

Résultat, 100% des glyphes matchés ont un score quasi-parfait ce qui lui a permis de reconstruire un fichier EPUB complet avec le formatage, les styles, les liens internes…etc. Tout y est, c’est trop fort !

Bref, Pixelmelt 1 - Amazon 0 ! Et ça, ça fait plaisir ! Maintenant si vous voulez connaitre tous les détails de ça et refaire la même chez vous (pour rigoler hein, ne vous lancez pas dans dans une opération de piratage massif sinon vous finirez en taule comme Sarko ^^)

The Swiss Army Knife of Sketching Tools Returns With Bold New Colors (And A Titanium Pencil)

Par : Sarang Sheth
24 octobre 2025 à 01:45

Precision. Portability. Swiss-grade craftsmanship. These have been Horizon’s calling cards since we first dubbed their Helvetica® ruler the “Swiss Army Knife of sketching tools.” Their 2025 Kickstarter stays true to that ethos while pushing in a new direction: adding vibrant new finishes to their compact multi-tools and introducing a numbered, hand-machined mechanical pencil for the design purists in their community.

The lineup sounds straightforward enough. Byzantine Purple, Irish Green, and Classic Blue colorways for both the Horizon Helvetica® and Helvetica® Max rulers, plus the collector-worthy Horizon Titanium S mechanical pencil, and the Horizon Hypatia A5 Notebook to go with it. But there’s an interesting tension here between what made Horizon successful and where they’re trying to go. The rulers that fit in your wallet are getting prettier. The new pencil costs significantly more and demands pocket space. One’s an iteration, the other’s a bet.

Designer: Ufuk Koc of Horizon Ruler

Click Here to Buy Now: $32 $40 (20% off). Hurry, only 40/50 left!

We covered the Helvetica® Max back in 2024, and the fundamentals haven’t changed because they don’t need to. Credit card-sized, measures up to 6 inches and 15 cm, packs a protractor with 180-degree markings, includes both imperial and metric compasses, offers quick circle guides from 3mm to 10mm, features isometric grids for 3D sketching, Swiss-made Bystronic laser cutter for precision, bold Helvetica® Neue typeface for readability, and TSA-approved with no sharp edges.. The original Helvetica® follows the same philosophy at a slightly smaller scale, topping out at 3 inches and 7 cm. Both are machined from 304 stainless steel, and honestly, they’ve earned their spot in designer EDC kits because they solve an actual problem: needing drafting precision without lugging around a drafting kit. Team Horizon also has improved the silk screen coating and UV-protected layering on all models 2025 onwards.

Byzantine Purple is having a moment, apparently. Irish Green and Classic Blue round out the new color options, joining the six finishes that already exist. Which, fine, this makes sense beyond pure aesthetics. When you’re pulling a ruler out of your wallet seventeen times a day across different projects, instant recognition matters. Purple for branding work, green for environmental projects, blue for UI mockups. Color coding is practical, not decorative. Horizon seems to understand this, or at least they’re banking on the more than 10,000 backers from their seven successful Kickstarter campaigns to recognize it.

While the titanium pencil jumps categories and the color rulers iterate on existing wins, the Horizon Hypatia A5⁺ Notebook slots directly into the workflow Horizon has been building toward: precision tools need somewhere to actually make marks. It’s sized at 150 × 220 mm, which makes it slightly larger than standard A5, giving you genuinely useful space without tipping into the unwieldy territory of A4. The paper is 140gsm ivory stock across 92 pages, thick enough to handle fountain pens and markers without bleed-through, which matters when you’re sketching with the same tools you’re using for technical notes. Machine-sewn spine with manual casing-in and hand-applied endbands, all finished by hand. The whole thing opens completely flat thanks to exposed spine stitching and hand-applied water-based PVA. Limited to 1,125 pieces, each with a hand-applied cotton label reading “A blank page holds infinite potential; don’t let your thoughts go unwritten,” which toes the line between inspirational and overwrought but probably lands correctly for the audience buying hand-bound notebooks. This is the product that actually complements the Helvetica rulers instead of competing with them for identity. You pull the ruler from your wallet, open the Hypatia flat on your desk, and the entire system makes sense.

Now about that titanium pencil. Grade 5 Ti-6Al-4V, which is aerospace-grade material with a 6:4 aluminum-to-vanadium ratio. German-made LAMY 0.5mm lead mechanism. Hand-machined by Maurizio in Hoofddorp, Netherlands, limited to 300 numbered pieces with gift-ready packaging. Every single detail screams premium, and that’s exactly where things get weird. Horizon built their entire reputation on $26 to $39 tools that fit in wallet-sized spaces. A full-length mechanical pencil cannot and will not fit in your wallet. It lives in a different part of your bag, serves a different function, competes against Rotring 800s and Tactile Turn Side Clicks and every other machined metal pencil that attracts design nerds with disposable income.

Grade 5 titanium is overkill for a pencil, which is precisely why it works as a statement piece. LAMY mechanisms are reliable, 0.5mm is the technical drawing sweet spot, and the hand-machining story provides artisanal credibility for whatever price point they land on. But does their audience actually want this? Because the people who loved Horizon loved them for making precision portable. Titanium S brings Horizon’s precision into a full-sized tool, where craftsmanship and balance redefine the sketching experience. It’s a different value proposition entirely, aimed at a designer who wants their tools to announce taste rather than disappear into workflow.

Honestly, the color expansion feels overdue. Designers have been stuck choosing between silver, black, and maybe gold finishes for pro-level technical tools since forever, as if precision work requires visual boredom. Byzantine Purple breaks that assumption hard. It’s a specific, confident color choice that suggests someone at Horizon actually looked at contemporary design trends instead of just defaulting to “professional” metallics. Irish Green and Classic Blue follow suit, giving creatives permission to match their tools to their aesthetic without sacrificing functionality. Your sketching kit doesn’t have to look like an engineer’s toolkit from 1987. It can look like it belongs to someone who cares about visual culture, who understands that the tools you carry say something about how you see the world.

The titanium pencil plays into the same idea but from a different angle. It’s a statement piece, numbered and limited, hand-machined instead of mass-produced. Grade 5 titanium is genuinely excessive for pushing 0.5mm lead across paper, but that excess is the entire point. It sits on your desk and announces that craftsmanship matters, that the weight and balance of a pencil affects how you think. Whether that resonates depends entirely on whether you see tools as utilities or extensions of creative identity.

The Kickstarter campaign just dropped, featuring early-bird rewards with significant discounts across the lineup. Exact pricing and availability are live on the campaign page, but based on Horizon’s past launches, the Horizon Helvetica® starts around $32, with the Helvetica® Max beginning at $39. Bundled tiers like the Duo, Core Trio, and creative sets offer even stronger value for backers looking to expand their toolkit. The Titanium S, limited to 300 pieces, commands a premium that reflects its hand-machined titanium construction and collectible nature, while the newly introduced Horizon Hypatia A5⁺ notebook completes the ecosystem, offering more space for ideas, notes, and sketches.

Helvetica® is a trademark of Monotype Imaging Inc. registered in the U.S. Patent and Trademark Office and may be registered in certain jurisdictions.

Click Here to Buy Now: $32 $40 (20% off). Hurry, only 40/50 left!

The post The Swiss Army Knife of Sketching Tools Returns With Bold New Colors (And A Titanium Pencil) first appeared on Yanko Design.

À partir d’avant-hierFlux principal

Transformez vos ebooks en cartes mentales

Par : Korben
12 septembre 2025 à 06:46

Un dénommé SSShooter, développeur de son état, a concocté un projet open source qui pourrait bien vous aider pour mieux apprendre n’importe quel sujet, à l’aide de cartes mentales. Baptisé Ebook to Mindmap , son outil transforme vos EPUB et PDF en cartes mentales interactives, le tout propulsé grâce à l’intelligence artificielle.

Cela permet de ne plus vous cogner 300 pages d’un traité sur le machine learning tout en griffonnant des notes sur un coin de nappe. Là vous glissez votre fichier dans l’outil et voilà ! Vous obtenez une carte mentale structurée regroupant tous les concepts clés, les relations entre les idées et l’architecture globale du bouquin.

Ce qui est plutôt cool avec cet outil, c’est qu’il ne se contente pas de vous balancer un résumé basique. Le projet utilise Google Gemini ou GPT d’OpenAI pour analyser intelligemment le contenu. Il détermine automatiquement la structure des chapitres, ignore les préfaces et tables des matières inutiles et vous propose trois modes de traitement différents selon vos besoins.

Que vous ayez besoin d’un simple résumé textuel parce que vous êtes pressé, d’une mindmap par chapitre pour une analyse détaillée, ou d’une carte mentale globale du livre entier, c’est vous qui choisissez. Et tout ça avec un système de cache intelligent qui vous épargne de re-traiter les mêmes bouquins encore et encore.

Pour l’installation, rien de compliqué si vous avez Node.js 18+ sur votre machine. Un petit git clone, un pnpm install et hop, vous êtes lancé. Vous configurez votre clé API (Google Gemini ou OpenAI), vous uploadez votre ebook et vous laissez l’outil faire son travail. Y’a même une démo accessible ici en ligne pour tester sans installer.

Mais comme le code est open source, vous gardez le contrôle sur le processus. Vous pouvez ainsi définir la profondeur des sous-chapitres à analyser, choisir le type de livre (technique, fiction, business…) et même ajuster les paramètres avancés selon vos besoins spécifiques.

Pour les étudiants qui doivent se farcir des pavés de 800 pages sur la thermodynamique quantique, ou pour les professionnels qui veulent extraire rapidement l’essence d’un livre business sans y passer le weekend, c’est parfait. Et pour les curieux qui accumulent les ebooks mais n’ont jamais le temps de tous les lire en détail, c’est la solution miracle.

Le seul bémol que je vois, c’est qu’il faut quand même une clé API pour faire tourner l’IA. Mais bon, avec les tarifs actuels de Google Gemini, ça reste largement abordable pour un usage personnel. Et puis si vous êtes développeur, rien ne vous empêche de forker le projet et d’y intégrer votre propre modèle d’IA local comme je l’ai fait pour LocalSite .

Anthropic Cookbook - Claude devient encore plus accessible aux devs

Par : Korben
18 juin 2025 à 05:36

À l’époque, quand on voulait faire de l’IA, fallait un doctorat et 6 mois pour comprendre TensorFlow. Et aujourd’hui ? C’est Claude qui devient enfin accessible au commun des mortels (au moins pour les mortels un peu dev ^^).

L’Anthropic Cookbook, qu’est-ce que c’est exactement ? Eh bien imaginez un bouquin de recettes, mais au lieu de faire des crêpes, vous y apprendrez à transformer Claude en assistant développeur. C’est une collection officielle de notebooks Jupyter qui vous montre comment exploiter Claude dans vos projets sans vous arracher les cheveux.

Meta vous espionne même en mode incognito !

Par : Korben
10 juin 2025 à 21:11

Vous pensiez être invisible en mode incognito avec votre VPN ?

Et bien Meta vient de nous prouver que vous étiez aussi discret qu’un rhinocéros dans un magasin de porcelaine. En effet, leur dernière trouvaille technique transforme votre smartphone en mouchard et cette fois, ça pourrait leur coûter la bagatelle de 32 milliards d’euros d’amende.

L’affaire a éclaté en juin 2025 quand une équipe de cinq chercheurs a révélé au grand jour le “localhost tracking” de Meta. Tim Vlummens, Narseo Vallina-Rodriguez, Nipuna Weerasekara, Gunes Acar et Aniketh Girish ont découvert que Facebook et Instagram avaient trouvé le moyen de contourner toutes les protections d’Android pour vous identifier, même quand vous faites tout pour rester anonyme. VPN activé, mode incognito, cookies supprimés à chaque session… Meta s’en fichait complètement.

Readest - Chouette, un nouveau lecteur d'ebooks open-source !

Par : Korben
16 mai 2025 à 10:52

Si votre bibliothèque d’ebooks ressemble à un placard Ikea monté à l’envers et que vous en avez marre que Jeff Bezos sache exactement à quel chapitre vous en êtes dans vos lectures coupables, alors Readest va vous sauver la vie !

Il s’agit de l’alternative open-source que les libristes et les technophiles attendaient pour ne pas avoir à jeter leurs mangas scannés illégalement (promis, je ne juge pas…) !

Readest est donc un lecteur d’ebooks qui fonctionne sur absolument tous vos appareils, que vous soyez sur Mac, Windows, Linux, Android ou iOS. Et une fois installé partout, tout est parfaitement synchronisé : notes, progression, marque-pages, surlignages… Ainsi, quand vous quittez votre PC pour votre téléphone dans les transports, vous reprenez exactement votre lecture là où vous en étiez.

Meta to Take EU Regulation Concerns Directly to Trump, Says Global Affairs Chief

18 février 2025 à 14:00
When companies are treated differently and in a way that is discriminatory against them, then that should be highlighted to that company’s home government,” Meta’s global affairs head said.

Google Colab vs Jupyter Notebook: Key Differences Explained

16 janvier 2025 à 17:15
Google Colab and Jupyter Notebook are powerful tools for coding and data analysis, each offering unique features and benefits. Compare them to choose the best fit for your needs.

Google Colab vs Jupyter Notebook: Key Differences Explained

16 janvier 2025 à 17:15
Google Colab and Jupyter Notebook are powerful tools for coding and data analysis, each offering unique features and benefits. Compare them to choose the best fit for your needs.

Transform Business Cards into Cherished Memories with This Minimalist Log Book

Par : JC Torres
16 septembre 2024 à 17:20

Business cards and shop cards are often regarded as boring, impersonal representations of people and places, but that’s partly because we often forget to associate the person with the name on the card. It’s easy enough to forget the first encounter with a stranger who hands you their business card, not unless you actually turn that card into an unforgettable memory. Rather than keep those cards in some container that you forget inside a drawer, why not slip them into this minimalist and profound log book that lets you write down your own thoughts and memories about people, encounters, and events, turning them into small stories that let you cherish these memories and remember them better for days to come.

Designer: Replug

Click Here to Buy Now: $19

Some people and events definitely leave a lasting impression, but our frail human minds can easily forget them as well. Photos and even business cards offer tangible triggers to jog our memories, but they can still end up feeling distant and impersonal, more like watching a film from the eyes of an outsider rather than from your own perspective. What better way to ensure you’ll remember the poignant details of that memory than by writing it down? And that’s exactly the kind of space that this Memories Log Book provides, allowing you to make every business card, shop card, or photo a truly personal and memorable encounter.

Using the log book is genius in its simplicity. You simply insert the two corners of a card into the slits and it will stay in place without the need for messy adhesives or cumbersome pockets. It can fit business cards, shop cards, and even small Instax photos, anything you might collect from brief but memorable encounters. Beside each card is an empty space, a blank canvas where you can write your own reflections on the person or event, helping your future self remember what made the card worth keeping. You can even draw on it, if you’re so inclined, creating a stronger association with those people you’ve only just met.

This A5-sized business card file log book can hold up to 120 cards, but you can add, remove, and rearrange pages just as easily as you add cards. An elastic band serves as the binding, running across the height of the book and through cutouts on the top and bottom edges. This innovative system makes it trivial to organize those cards the way you like that you might actually find yourself losing time just personalizing the pages.

The Log Book’s minimalist design extends to its choice of material. High-quality paper is simple yet holds deep meaning, both for our minds and especially our hands. The tactile warmth of each page creates a bond between the person and the cards on that page, and its elegant yet unassuming appearance is a perfect fit for any setting, whether it’s at home, in the office, or even in a meeting. It’s definitely a great gift idea not just for workers but for anyone who loves collecting memories in a more meaningful and personal way.

Click Here to Buy Now: $19

The post Transform Business Cards into Cherished Memories with This Minimalist Log Book first appeared on Yanko Design.

This Japanese Kintsugi Art Notebook Is Your Journaling Partner to Help You Realize Ikigai

Par : JC Torres
4 septembre 2024 à 00:45

Paper notebooks are in again, though some would argue they never really went out of fashion. Even with the inherent limitations of the medium, there is just an unbridled joy in putting pen or pencil to paper that has not yet been sufficiently replicated by the most advanced technologies and designs. In a way, notebooks have also become a reflection of the owner’s own self, while also acting as a gateway to their own inner world, their thoughts, their dreams, and maybe even their own self-image. Some people like their notebooks and their covers plain, while others opt for designs that display their interests and loyalties. Still, others treat their notebook covers like a blank canvas ready to tell their life story through stickers and art. This rather distinctive Japanese-inspired notebook tries to tell a different story, one that aims to inspire the owner to not only rise from the ashes but also embrace their own imperfections.

Designer: Sutta Design

Click Here to Buy Now: $29

Ceramic pots have great value not just because of their intricate, often hand-made designs but also because of their fragility. A single drop or hard bump is enough to break a beautiful vase, and most people simply throw these away, even if there’s just a crack. The Japanese, however, aren’t ones to dispose of what can still be repaired, and so the famed kintsugi, the traditional art of repairing pottery, was born. In a nutshell, this art uses golden lacquer to patch up and cover cracks, resulting in a piece of pottery that is even more beautiful because of its obvious flaws.

Over time, kintsugi became a symbol of embracing imperfections and self-healing, and those are the sentiments that this golden healing notebook attempts to convey. Using an equally traditional screen-printing method, wriggling lines of gold are painted on the notebook’s plain black cover, mimicking the cracks covered up by lacquer in a kintsugi masterpiece. And as with cracks, there is no uniformity or pattern to the branching lines, giving it a sense of randomness that you would find in nature itself. It’s a striking visual, with the gold contrasting with the black, that evokes both awe and wonder, subtly leading the mind to deeper thoughts.

The notebook’s theme of recovery and revival goes deeper than the cover. The paper used inside is bagasse which is made from the residue produced during sugarcane extraction. Instead of creating new paper from virgin pulp, it reuses what has been discarded, trying to make whole what was broken. In its own small way, it helps heal the planet’s cracking health, patching it up in small beautiful pieces rather than in one grandiose but ineffective sweep.

The kintsugi notebook embodies not only a traditional Japanese practice but the very highlights of Japanese culture itself. It is the perfect example of Japanese minimalist design, the frugality and efficiency of its people, as well as the profound thinking they can evoke from just a few simple symbols and materials. Whether you’re writing down your most secret thoughts, planning out your day ahead, or simply scribbling ideas and dreams, the notebook’s beautiful recycled paper invites you to let your pen roam free on the page, while the seemingly cracked cover exhorts you to embrace even the flaws that could, someday, lead to a beautiful design.

Click Here to Buy Now: $29

The post This Japanese Kintsugi Art Notebook Is Your Journaling Partner to Help You Realize Ikigai first appeared on Yanko Design.

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