Eric Tsai@ericts
I’m a web developer who eats my own dog food. Currently, I work at Taiwan Mobile, striving to make products more accessible and efficient for everyone.
Writing
Open source
Products
A collection of well-animated UI components and animation-related hooks. View source for ericts/ui (opens in a new tab)
An open-source screen recorder: capture your screen with system audio, mic, and camera, then edit and export to MP4. Local-only, with no account needed. View source for recordstuff (opens in a new tab)
A cloud-synced whiteboard built on Excalidraw, with end-to-end encrypted sharing and workspace management. View source for drawstuff (opens in a new tab)
A local code review CLI that turns Git changes into structured, budget-aware reports through pluggable review engines.
Analyzes your past Claude Code and Codex prompts locally and generates a personal profile. View source for prompt-profile (opens in a new tab)
An open-source repository analysis tool that helps you understand unfamiliar codebases using repository-specific, grounded context.
A real-time image optimization service: format conversion, resizing, and quality control via URL parameters, secured with HMAC signatures. View source for OptStuff (opens in a new tab)
Templates & infrastructure
Auto-deploy a Next.js app to your own VPS with GitHub Actions.