...
We are aware of the recently disclosed PHP2Shell vulnerabilities (CVE-2026-109618 and CVE-2026-109619) and can confirm Filestack is not impacted by these vulnerabilities.

PDF Conversion

PDF conversion is a group of Processing API tasks for working with PDF documents.

Tasks

  • pdfinfo: returns information about a PDF, including color information per page with colorinfo:true
  • pdfcreate: merges files from a list of Filestack handles into one PDF (premium feature)
  • pdfconvert: changes page orientation and page format (A2 to A5, B4, B5, letter, legal, tabloid) and selects pages
  • doc_to_images: converts all or selected pages to JPG or PNG images (premium feature)
  • output=format:pdf: converts documents and images to PDF

Page Selection

Pages are selected with lists and ranges, for example [1,3,6] or [3-5,6-7].

Conversion Engines

pdfcreate supports the poppler and mupdf engines. doc_to_images supports imagemagick, poppler and mupdf.

Documentation

Read the Filestack documentation page for this term.

Open the documentation