pdf-tools

• merge_pdfs — Merge multiple PDF files into one, in the order given. Returns the merged PDF as base64.
• split_pdf — Split a PDF into parts. Provide ranges like "1-3, 5, 8-10" (each comma group becomes one output PDF), or omit ranges to get every page as its own PDF. Returns b
• extract_pages — Extract the given pages into a new PDF (original order). Returns base64.
• remove_pages — Delete the given pages from a PDF. Returns the remaining document as base64.
• rotate_pdf — Rotate pages clockwise by 90, 180, or 270 degrees. Rotates all pages unless a page list is given. Returns base64.
• watermark_pdf — Stamp a diagonal text watermark (e.g. "CONFIDENTIAL", "DRAFT") across every page. Returns base64.
• add_page_numbers — Stamp page numbers onto every page of a PDF. Returns base64.
• get_pdf_metadata — Read a PDF's document properties (title, author, subject, keywords, creator, producer, dates, page count).
• set_pdf_metadata — Rewrite a PDF's document properties. Pass empty strings to strip identifying metadata before sharing. Returns base64.
• flatten_pdf — Flatten fillable form fields into permanent page content so answers can't be edited. Returns base64.

No long description beyond the summary.