It would be very nice if we could install this package via package-install.

It would also wider your audience, people like me may be checking new packages to see if there is anything interesting hehehe.

When in some PDF, no matter which page I was, org-store-link always generate the same link to same position.
Like this PDF file: http://dtrace.org/guide/dtrace-print.pdf
It always get the same link like file:Data/Books/Dynamic Tracing Guide.pdf::%PDF-1.5.
I tried org-store-link in PDF outline buffer, does not work. But outline jump works fine. Why it always get the same link?

And in some PDF file I got non-ascii link like thsi:

"file:~/Org/Wiki/Computer Technology/Programming/Programming Languages/Clojure/Data/Books/Clojure for the Brave and True.pdf::%PDF-1.6 %\342\343\317\323"

What type of highlights / annotations are these on org buffers?

Check out this blog entry: http://matt.hackinghistory.ca/2015/11/11/note-taking-with-pdf-tools/

It has some code for add org-mode link support.

I found this version code does not have link to back to PDF annotation page and position.
Really hope pdf-tools-org-export-to-org can support this link.

And here is a short piece of upper blog entry code:

;;; Org-mode link support [[pdfquote:file.org]]
;;; alternative: temporary buffer with custom link type
(defun org-pdfquote-open (link)
  "Open a new buffer with all markup annotations in an org headline with `LINK'."
  (interactive)
  (pop-to-buffer
   (format "*Quotes from %s*"
           (file-name-base link)))
  (org-mode)
  (erase-buffer)
  (insert (pdf-annot-markups-as-org-text link nil 1))
  (goto-char 0)
  )

(defun org-pdfquote-export (link description format)
  "Export the pdfview `LINK' with `DESCRIPTION' for `FORMAT' from Org files."
  (let* ((path (when (string-match "\\(.+\\)::.+" link)
                 (match-string 1 link)))
         (desc (or description link)))
    (when (stringp path)
      (setq path (org-link-escape (expand-file-name path)))
      (cond
       ((eq format 'html) (format "<a href=\"%s\">%s</a>" path desc))
       ((eq format 'latex) (format "\href{%s}{%s}" path desc))
       ((eq format 'ascii) (format "%s (%s)" desc path))
       (t path)))))

(defun org-pdfquote-complete-link ()
  "Use the existing file name completion for file.

Links to get the file name, then ask the user for the page number
and append it."
  (replace-regexp-in-string "^file:" "pdfquote:" (org-file-complete-link)))

(org-add-link-type "pdfquote" 'org-pdfquote-open 'org-pdfquote-export)

Here is my recipe PR:
melpa/melpa#4368

I create PR to pdf-tools-org with some requirements for MELPA.

My setup is:
emacs version: GNU Emacs 27.0.50
Org mode version 9.1.14
pdf-tools-org newest git checkout
pdf-tools from melpa: 20180428.1527

When I tried to export annotations from a pdf I get this error:
Invalid tag specification: 1

This is caused by the org-set-tags 1 function in the pdf-tools-org-export-to-org function in pdf-tools-org.el. If I omit this line, it works and the resulting org file actually has tags. But what might be the problem?

Any help on this?

Thanks

Nice. Thanks for this.

Importation works (just tested with a highlight with comments) but when I import I have the following things in the comments

+BEGIN_QUOTE

the text I highlighted

+END_QUOTE

my comments

I suppose, I should just have my comments

Also, the format chosen to export is not really useful for me (difficult to read). I'd prefer something like

• [[linktopdf:page][highlights]]
  comments
  :PROPERTIES:

But I suppose, it is not so easy