🛠️ Developer Tools11
- 🎧 Audio & voice
- ✂️Free Audio Cutter — Trim to Lossless WAVJavaScriptOpen→
- 🎙️VOXSAVE — Free Text-to-Speech Converter (KO·EN·ZH·JA)Rust, PythonDownload→
- 🖼️ Images & documents
- 🔳Free QR Code Generator — WiFi·vCard·Logo QRJavaScriptOpen→
- 🖼️Free Image Format Converter — PNG·JPEG·WebPJavaScriptOpen→
- 📄Compress PDF — Free, Fits Any Upload Size LimitNEWJavaScriptOpen→
- ⚙️ Automation & productivity
- ⏰SCHEDULED WINDOWS APP LAUNCHER + TELEGRAM REMOTEPythonDownload→
- 📌SNAPLAUNCH — Right-Click Menu Launcher for WindowsRust (egui)Download→
- 🔌 Developer & serial
- 📟CNTERMINAL — Free Portable Serial TerminalRust (egui)Download→
- { }Free JSON Formatter & ValidatorJavaScriptOpen→
- 🎮 Gaming
- 🎯STARCRAFT MINIMAP RADARC#, .NETDownload→
- 🧮 Everyday mini tools
- 🧰Mini Tools — Calculator(age·salary·char·D-day)·Game(ladder·lotto)JavaScriptOpen→
📚 Lectures11
- 🧑💻 Programming languages
- 🐍Python — Basics·Intermediate·Advanced·Projects46 lessonsEnter→
- 🧱C — Setup·Basics·Intermediate·Advanced14 lessonsEnter→
- ⚡JavaScript — Basics·Async·DOM·Node.js25 lessonsEnter→
- ☕Java — Basics·OOP·Collections·Spring Boot26 lessonsEnter→
- 🟣C# — Basics·OOP·LINQ·async (.NET 8)22 lessonsEnter→
- 🦀Rust — Basics·Ownership·Types·async22 lessonsEnter→
- 🌐 Web & collaboration
- 🌐Homepage Building — HTML·CSS·JS·React·Node·DB64 lessonsEnter→
- 🔀Git & GitHub — Branch·Remote·Rebase·Actions8 lessonsEnter→
- 🧮 Algorithms
- 🧮Python Algorithms·Data Structures·DP·Graph27 lessonsEnter→
- 🔌 Embedded & robotics
- 🔌Embedded C — 8051·STM32 register-level24 lessonsEnter→
- 🤖Industrial Robot Communication — I/O·TCP/IP·RS-232·MODBUS9 lessonsEnter→
📝 Blog33
- 📝How to turn a Base64 string into a PDF or image on Windows — nothing to installNEWWindowsRead→
- 📝How to convert MP4 to MP3 on Windows — nothing to install, nothing uploadedNEWAudioRead→
- 📝How to Record Audio on Windows 11: Your Voice, Your PC's Sound, and What to Check When Nothing RecordsNEWAudioRead→
- 📝How to Open an HWP File Without Hangul (Tested: Word Shows Garbage, ONLYOFFICE Keeps the Table)NEWDocumentsRead→
- 📝Does Windows Defragment Your SSD? What Optimize Drives Really Does (Checked in a Real PC's Event Log)NEWWindowsRead→
- 📝Unexpected end of JSON input — What It Really Means (Empty Body, 204, HEAD, no-cors) and How to Fix ItNEWWeb developmentRead→
- 📝How to Open a JSON File on Windows — and Make It Readable (Free, No Install)NEWWindowsRead→
- 📝How to Trim a Voice Recording on iPhone, Android or Windows (and Split an Hour-Long File)NEWAudioRead→
- 📝How to Reduce PDF File Size for Free — Compress Without Uploading and Fit an 8 MB LimitNEWDocumentsRead→
- 📝How to convert AVIF to JPG on Windows — and why you got an .avif at allNEWImagesRead→
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