bitmap

Normally, we need to use Adobe Illustrator (AI) to do design work, but we can't always afford to pay for the license fees of AI.

Due to some work in the company, recently, I have discovered a great feature in the open source vector drawing program - Inkscape: its excellent capability in tracing bitmap to vector graphics (PNG -> SVG). Actually, I knew the feature was there, I just didn't realize it worked in such a flawless & high-quality manner.