Tôi đã xây dựng công cụ chuyển đổi ảnh miễn phí trong một cuối tuần bằng AI — WebConverter

I wanted a simple image converter that didn't upload my files anywhere. Every tool I found either required a sign-up, plastered ads over the download button, or silently shipped my photos to a server I didn't control. So I built my own — and AI wrote most of the code.

The Stack

• C++ / Magnum — battle-tested image decoding and encoding
• Emscripten — compiles C++ to WebAssembly
• Web Workers — four parallel workers handle batch conversions
• Astro — static site generator producing clean HTML

WebConverter.app is free to use. You can convert images to PNG, JPEG, BMP, and several other formats — all without uploading a single byte.