SU YAOYONG

practitioner of Tai Chi ， an AI surfer,

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About

A practitioner of Tai Chi and an AI surfer, perfectly blending ancient wisdom with future technology。

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Maker History

Simple System Audio Recorder for WindowsA lightweight Windows tool to record system audio
Feb 2026
PDF ToolsA privacy-first offline PDF toolbox with no file size limits
Jan 2026

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Joined Product HuntDecember 30th, 2025

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4mo ago

Simple System Audio Recorder for Windows - A lightweight Windows tool to record system audio

A lightweight Windows utility that records system audio directly from the sound card. I built it to record meetings and online courses without artificial noise. Developed with AI + Codex as a coding partner. Supports MP3 export (requires libmp3lame.dll). Download from GitHub releases.

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5mo ago

PDF Tools - A privacy-first offline PDF toolbox with no file size limits

PDF Tools is a lightweight desktop application for handling PDF files locally. Most online PDF tools have file size limits or require uploading sensitive documents. This tool runs completely offline, so your files never leave your computer. It supports common PDF operations such as merging, splitting, compressing, and converting PDFs, and works well even with large files (200MB+). Built for people who care about privacy, reliability, and simplicity.