Help Comments and markup

Export or import comments

Save a document's comments to an XFDF, FDF or JSON file, or add comments from such a file.

You can pass comments between people and programs without sending the whole document, as a small comments file.

Steps

To export:

  1. In the rail, choose Review. In the Comment files group, choose Export XFDF, Export FDF or Export JSON.
  2. Choose where to save.

To import:

  1. In the Comment files group, choose Import XFDF, Import FDF or Import JSON.
  2. Pick the file.

Good to know

  • Each comment's position, colours, text, author and date travel. Rich text formatting and the pictures in picture stamps do not.
  • XFDF stores colours as eight-bit RGB values, so it can round a colour slightly. JSON and FDF keep the original colour values.
  • An import adds every comment that can be placed. If a comment names a missing page, an unsupported kind, or an invalid entry, the result lists its number and the reason it was skipped.
  • A readable file with no comments says exactly that. A file that cannot be read in the chosen format adds nothing.
  • Comment files exported by another widely used PDF editor have been tested; files from other programs may work but are not tested.
  • Undo an import with Ctrl+Z.

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