If you're building — or integrating — a browser-based audio trimmer, the question that eventually reaches your inbox isn't "does it cut audio?" The real question is: does it cut audio correctly across the inputs we actually receive from users? That shift, from feature presence to behavior under fuzzy conditions, is what turns a demo into a product. This article walks through the QA matrix I use when reviewing client-side trimmers before release, with an emphasis on the silent failures that don...