Queue on a worker, not in a dying tab
Rasterizing many pages is CPU-heavy. That is why batch is Hetzner, not “select all on free.” Pair with Pro HD if you also need 300 DPI. Compress the ZIP afterward only if email still fails — you already have images, not a PDF.
Free vs Pro
Singles: free Edge. Multi-file queues, huge page counts, long jobs: Premium so Edge timeouts do not bite mid-catalog.
Grouping
Similar DPI and page size together. A one-page invoice next to a textbook is a messy ZIP.
After the ZIP
Spot-check page_1 and a middle page. Then import to DAM or slides.