PDF tips, format notes, and product updates — short pieces you can use right away.
Send Idempotency-Key on jobs under /api/v1/. Successful responses cache 24 hours in process memory; replays return Idempotency-Replayed: true, not a second run.
A scan pack needs two steps: OCR returns Markdown text for agents, while Compress shrinks the original PDF with stream recompression. Order and outputs differ.
Markdown↔PDF keeps headings, lists, and simple tables better than pixels. Exact fonts, pagination, and layout do not survive as a lossless round trip.
Sanitize strips scripts, embeds, and metadata. Auto Redact blacks matching pages. Neither alone is a share checklist—and a black box is not content removal.
Same PDF123 merge via four clients: the browser form, curl to /api/v1/general/merge-pdfs, MCP at /mcp, and pdfx local or --cloud against your API base.