Export Download Debugging

When your image export runs without errors but saves a 0 KB file, this skill walks Claude through the right debugging order. It separates payload capture from the save operation, which matters because browsers often create the empty file first, then fail silently during the write. The guidance covers showSaveFilePicker, blob URLs, data URL fallbacks, and Electron's download manager, with a focus on proof before escalation. It's tuned for web artifacts and preview iframes where sandboxing or CSP can break what looks like working code. If you've ever watched a user click Save As and get nothing, this gives Claude the evidence checklist and fix sequence to actually resolve it.

Install to Claude Code

npx -y skills add nexu-io/open-design --skill export-download-debugging --agent claude-code