The preview uses this local copy to export the visible email container as PNG without a CDN connection. Release archives include the library and its license.

Project: https://github.com/niklasvh/html2canvas
Distribution: https://cdn.jsdelivr.net/npm/html2canvas@1.4.1/dist/html2canvas.min.js
SHA-256: e87e550794322e574a1fda0c1549a3c70dae5a93d9113417a429016838eab8cb

Capture uses DOM rendering, so CSS support and cross-origin images follow html2canvas's documented limitations. The iframe permits same-origin DOM access while keeping scripts disabled. Keep the version, license and checksum together when updating the library.