Useful Tools. A Simpler Internet.

🛠 Track Match Confidence Scorer A browser-only scoring workbench that decides whether a candidate audio result is really the track you asked for — comparing title, artist, duration and album, ranking every candidate, and refusing to 'accept' anything below your threshold instead of serving the wrong song. It is the matching engine from the article, exposed as a transparent, inspectable utility. It does not download, decrypt, or fetch any audio. EN 🛠 Die Yield And Cost Calculator Estimate die yield, dies per wafer, and cost per good die, then compare a monolithic design with 2, 4, or 8 equal chiplets using the same total silicon area. EN 🛠 Timezone Converter Convert a date and time across up to eight timezones instantly. See local times, UTC offsets, day changes, and copy ISO 8601 — all in your browser. EN 🛠 Free Small-Shop Bookkeeping Tracker (Sales, Expenses, Profit & Cash Book) Track shop sales, expenses, net profit and cash on hand in a private browser-based cash book. Export your records as CSV. Free, no sign-up. EN 🛠 PEM Certificate Decoder A no-upload, instant PEM/CSR decoder that turns pasted x509 certificate or CSR text into a readable field table plus a clear validity and SAN summary — everything parsed locally in the browser, so private certificate material never leaves the page. EN 🛠 Custom PRD build Turn a rough product idea into a structured, copy-ready product requirements document in your browser. EN 🛠 Custom PRD build Turn pasted labels and values into a clean, titled pie or donut chart and download it as SVG or PNG — entirely in your browser. EN 🛠 How Can I Merge Pdfs For Free A no-signup drag-and-drop PDF merger that combines up to 20 files into one ordered document in seconds — built for people who just need one file to upload, print, or email, not an account. EN 🛠 Solve Linear Equations Calculator Solve one-variable linear equations or 2 × 2 systems instantly, with clean step-by-step working and a substitution check. EN 🛠 تحويل Pdf الى صورة واحدة حوّل كل صفحات PDF إلى صورة طويلة واحدة مرتبة من أول صفحة إلى آخرها. اختر النطاق والصيغة والدقة ثم نزّل الصورة، بدون تسجيل أو علامة مائية. EN 🛠 Private JSON Formatter Format, minify and validate JSON, YAML or SQL entirely in your browser. No uploads, no storage and no network requests — safe for tokens, connection strings and other secrets. EN 🛠 UUID Bulk Generator A one-screen, zero-signup UUID factory: pick v4 or v7, choose how many, get a clean copy-ready batch of RFC-compliant unique IDs instantly in the browser — no ads, no server round-trip, no data leaving the device. EN 🛠 Timezone Converter A fast, ad-free converter that takes any local date-time in one time zone and shows the exact same instant in another zone — DST-aware, with a fixed world-clock strip so you can sanity-check a meeting slot at a glance. EN 🛠 Calendrier Par Semaine En Ligne A no-signup online weekly calendar: pick a week, drop events on a 7-day grid, print it or export an .ics file — for French freelancers, students and parents who need one clean week on screen fast, not a full account-based planner. EN 🛠 Calculer Nombre De Semaines Entre Deux Dates Calculez le nombre de semaines entre deux dates avec semaines décimales, semaines complètes et jours restants. Calcul instantané et privé dans le navigateur, avec option pour inclure le jour de fin. EN 🛠 Calculer Nombre De Semaines Calculez gratuitement le nombre de semaines entre deux dates, avec semaines complètes, jours restants et option pour inclure le jour de fin. Calcul instantané dans le navigateur, sans inscription. EN 🛠 コンクリート 梁 計算 Excel A browser-based preliminary reinforced-concrete beam checker: enter section, rebar and design actions, get required steel area, flexural/shear utilisation and a PASS/FAIL verdict — with one-click copy to Excel. Built for Japanese structural engineers who currently rebuild these numbers in a spreadsheet every time. Assumes a generic simplified beam check, not any specific vendor's Excel template. EN 🛠 コンクリート 推定強度 計算 式 28日圧縮強度・材齢・養生温度からコンクリートの推定圧縮強度を計算し、目標強度への到達日数と脱型判定を表示するブラウザ完結型ツール。 EN 🛠 Valor Do Gerador De Energia Calcule o valor de revenda de um gerador de energia e estime consumo e custo por kWh. EN 🛠 Mm To Feet And Inches Fraction Calculator A construction-grade millimetre → feet/inches/fraction converter that gives tradies and DIYers a tape-measure-ready number (e.g. 3' 3 3/8") with no mental arithmetic. Assumed generic utility from the literal keyword — no branded product involved. EN 🛠 Fraction To Mixed Number Calculator A one-page fraction converter that turns any improper fraction into a mixed number (and back) with the long-division steps shown — for students, parents helping with homework, and anyone checking a recipe or measurement. EN 🛠 Calculateur De Prestation Pour Enfants Estimateur familial français sans compte pour calculer une allocation familiale indicative à partir du nombre d’enfants et du revenu du foyer. EN 🛠 LLM VRAM Calculator Estimate how much VRAM a local LLM needs from parameter count, quantization and context length, with a plain-language fit verdict for common GPUs. EN 🛠 Mermaid to SVG Render Mermaid diagram-as-code into clean, themeable SVG in your browser. Preview live, copy the markup, or download a standalone SVG file — no signup and nothing uploaded. EN 🛠 Totally Free Calorie Counter A no-signup, no-account calorie counter that adds up what you've eaten today from a built-in list of everyday UK foods and tells you how much of your daily target is left — positioned as a quick day-planner, not a food diary. EN 🛠 Generatore Qr Code Gratis Per Sempre Crea un QR code statico per link, testo, Wi-Fi, email, telefono o SMS e scaricalo in PNG o SVG. Gratis, senza account, senza watermark e senza scadenza. EN 🛠 Medium Article Unlocker 粘贴一条 Medium 文章链接，即可在同一页面内直接阅读干净排版的完整正文——不需要安装任何 App，不含 GitHub 入口，没有广告和推荐流干扰，只留下文章本身。 EN 🛠 Color Converter A dead-simple, instant HEX ↔ RGB ↔ HSL converter with a live preview swatch — paste any color code, get every other format plus ready-to-paste CSS, with nothing to install, sign up for, or load from a server. EN 🛠 Regex Tester A fast, ad-free, single-screen regex tester that runs entirely in the browser: type a pattern, toggle flags, paste sample text, and see every match highlighted instantly with numbered and named capture groups. EN 🛠 Hash Generator A private, browser-only hash calculator that turns any text into MD5, SHA-1, SHA-256, SHA-384 or SHA-512 digests in hex and Base64 the moment you type — nothing ever leaves the page. EN 🛠 Clean Article Reader A single-purpose reading utility: paste the link to a publicly available article and get a clean, distraction-free text view with word count and reading time. It deliberately does not — and will not — circumvent paywalls: member-only content stays locked, and the tool says so plainly instead of pretending otherwise. EN 🛠 Mesh Gradient Generator Free A free browser-based mesh gradient generator that turns a few color picks into a soft, multi-blob gradient you can preview live and export as PNG, SVG, or ready-to-paste CSS — for designers, indie devs, and landing-page builders who need a hero background in under a minute. EN 🛠 Online Word Counter And Character Counter A live word, character, and reading-time counter for writers, students, and social-media posters who need exact limits (X/Twitter, meta descriptions, school essays) as they type — no signup, no paste round-trip. EN 🛠 Online Title Case Converter Paste text and get properly title-cased output that can be copied with one click. EN 🛠 Free Audio Converter Kostenlos Deutsch Audio kostenlos im Browser umwandeln: eine Audiodatei ablegen, Zielformat (MP3 oder WAV), Bitrate, Abtastrate und Kanäle wählen und die fertige Datei herunterladen — ohne Anmeldung, ohne Upload, ohne Wasserzeichen. EN 🛠 Free Audio To Mp3 Converter Online Mp4 A no-upload, no-account web page that pulls the audio track out of an MP4/video (or any audio file) and saves it as a real .mp3 at your chosen bitrate — for anyone who needs an MP3 fast without installing VLC or handing a file to a random server. EN 🛠 Domain Age Checker Online Paste any domain and see instantly how old it is, when it was registered, and whether it looks trustworthy — a 20-second vetting tool for anyone who received a link, offer, or cold email. EN 🛠 House Floor Plan Generator Free Free browser tool that turns a plot size plus a room wishlist into a labelled, to-scale 2D schematic floor plan (SVG) with a room-area schedule — for German self-builders and tenants sketching a layout before talking to an architect. Generic schematic-plan utility, not permit-ready architecture. EN 🛠 Générateur De Grille Loto Excel Générateur de grilles Loto FR et EuroMillions sans compte : 1 à 200 grilles aléatoires filtrées (somme, parité, numéros consécutifs) puis téléchargement immédiat en fichier CSV Excel, .xls ou texte. EN 🛠 Random Number Generator Wheel App A browser-based spinning wheel that visually picks a random number (or one of your own custom entries) — for teachers, streamers, and anyone settling a decision in front of an audience. EN