Extract

• images
• fonts
• embedded file streams

• obtain files, such as images or the original HTML if the PDF conversion embedded it
• edit the external files (for example, images in an image editor), and then re-Embed the changes
• reduce disk space by sharing common images and fonts among PDFs

Options

java tool.pdf.Extract [options] PDF-file(s)

• Object selection
  • -embed -- extract embedded files
  • -font -- extract (unsubsetted) fonts Note that text is sometimes constructed from from vector drawings, not as text. CFF not common in external files.
  • -image -- extract images Note that graphical shapes can be vector drawings, not images. Note that images in PDF often store to match its coordinate system, with Y coordinates going up, which is upside down in other image viewers and editors.
  • -streams -- extract all streams, including fonts, images, videos, and content command streams
• Restriction
  • -page range -- extract objects from selected pages Objects by multiple pages are extracted only once.
  • -min size -- minimum size of object that will be extracted. Default: 0
• Write new PDF
  • -edit -- write new PDF file that points to extracted objects. Extracted objects are written in a form that can be edited, but which cannot be used directly by PDF, so the new PDF is invalid. For example, image data may need a wrapper for some valid format. After editing, Embed can follow the pointers in the PDF and rewrite the extracted, edited objects to build a valid PDF.
  • -share -- write a new valid PDF file that points to extracted objects. Objects are in a form needed by direct use by PDF, which may not be easily editable.
• -cache directory -- directory in which to place extracted files and objects. For example, if splitting off fonts only, this directory could be the font library. Default: current directory.
• -obj range -- just dump objects to stdout, unaffected by restrict / rewrite / cache. For use by developers.
• -password password -- password if PDF is encrypted