xmp.md
In xmpdf: Edit 'XMP' Metadata and 'PDF' Bookmarks and Documentation Info

get_xmp() / set_xmp()

Code
  print(xmp())
Output
  No XMP metadata found

Code
  print(get_xmp(f)[[1]])
Output
  No XMP metadata found

Code
  print(x)
Output
  i  spdx_id (not XMP tag) := CC-BY-4.0
  i  auto_xmp (not XMP tag) := cc:attributionName, cc:license, dc:rights, dc:subject,
          photoshop:Credit, xmpRights:Marked, xmpRights:UsageTerms,
          xmpRights:WebStatement
     Iptc4xmpCore:AltTextAccessibility := An alternative image text
     Iptc4xmpCore:ExtDescrAccessibility := An extended description (for accessibility) With newline
     Iptc4xmpCore:Location := A sublocation (legacy)
  => cc:attributionName = A creator
     cc:attributionURL := https://example.com/attribution
  => cc:license = https://creativecommons.org/licenses/by/4.0/
     cc:morePermissions := https://example.com/more-permissions
     dc:contributor := An updated contributor
     dc:creator := A creator
     dc:description := A description
  => dc:rights = © 2020 A creator. Some rights reserved.
  => dc:subject = R, xmpdf
     dc:title := An XMP title
     pdf:Keywords := R, xmpdf
     pdf:Producer := R
  => photoshop:Credit = A creator
     photoshop:DateCreated := 2020
     photoshop:Headline := A headline
     xmp:CreateDate := 2020-10-10
     xmp:CreatorTool := A creator tool
     xmp:ModifyDate := 2023-01-27T13:37:27.909812682-08:00[America/Los_Angeles]
  => xmpRights:Marked = TRUE
  => xmpRights:UsageTerms = This work is licensed to the public under the Creative Commons
          Attribution 4.0 International license
          https://creativecommons.org/licenses/by/4.0/
  => xmpRights:WebStatement = https://creativecommons.org/licenses/by/4.0/

Code
  print(x, mode = "creative_commons")
Output
  i  spdx_id (not XMP tag) := CC-BY-4.0
  i  auto_xmp (not XMP tag) := cc:attributionName, cc:license, dc:rights, dc:subject,
          photoshop:Credit, xmpRights:Marked, xmpRights:UsageTerms,
          xmpRights:WebStatement
  => cc:attributionName = A creator
     cc:attributionURL := https://example.com/attribution
  => cc:license = https://creativecommons.org/licenses/by/4.0/
     cc:morePermissions := https://example.com/more-permissions
  => dc:rights = © 2020 A creator. Some rights reserved.
  => xmpRights:Marked = TRUE
  => xmpRights:UsageTerms = This work is licensed to the public under the Creative Commons
          Attribution 4.0 International license
          https://creativecommons.org/licenses/by/4.0/
  => xmpRights:WebStatement = https://creativecommons.org/licenses/by/4.0/

Code
  print(x, mode = "google_images")
Output
  i  spdx_id (not XMP tag) := CC-BY-4.0
  i  auto_xmp (not XMP tag) := cc:attributionName, cc:license, dc:rights, dc:subject,
          photoshop:Credit, xmpRights:Marked, xmpRights:UsageTerms,
          xmpRights:WebStatement
     dc:creator := A creator
  => dc:rights = © 2020 A creator. Some rights reserved.
  => photoshop:Credit = A creator
  X  plus:Licensor (not currently supported by {xmpdf})
  => xmpRights:WebStatement = https://creativecommons.org/licenses/by/4.0/

Code
  print(x, mode = "all")
Output
  i  spdx_id (not XMP tag) := CC-BY-4.0
  i  auto_xmp (not XMP tag) := cc:attributionName, cc:license, dc:rights, dc:subject,
          photoshop:Credit, xmpRights:Marked, xmpRights:UsageTerms,
          xmpRights:WebStatement
     Iptc4xmpCore:AltTextAccessibility := An alternative image text
     Iptc4xmpCore:ExtDescrAccessibility := An extended description (for accessibility) With newline
     Iptc4xmpCore:Location := A sublocation (legacy)
  => cc:attributionName = A creator
     cc:attributionURL := https://example.com/attribution
  => cc:license = https://creativecommons.org/licenses/by/4.0/
     cc:morePermissions := https://example.com/more-permissions
     dc:contributor := An updated contributor
     dc:creator := A creator
     dc:description := A description
  => dc:rights = © 2020 A creator. Some rights reserved.
  => dc:subject = R, xmpdf
     dc:title := An XMP title
     pdf:Keywords := R, xmpdf
     pdf:Producer := R
  => photoshop:Credit = A creator
     photoshop:DateCreated := 2020
     photoshop:Headline := A headline
     xmp:CreateDate := 2020-10-10
     xmp:CreatorTool := A creator tool
     xmp:ModifyDate := 2023-01-27T13:37:27.909812682-08:00[America/Los_Angeles]
  => xmpRights:Marked = TRUE
  => xmpRights:UsageTerms = This work is licensed to the public under the Creative Commons
          Attribution 4.0 International license
          https://creativecommons.org/licenses/by/4.0/
  => xmpRights:WebStatement = https://creativecommons.org/licenses/by/4.0/

Code
  print(x2)
Output
     Iptc4xmpCore:AltTextAccessibility := An alternative image text
     Iptc4xmpCore:ExtDescrAccessibility := An extended description (for accessibility) With newline
     Iptc4xmpCore:Location := A sublocation (legacy)
     cc:attributionName := A creator
     cc:attributionURL := https://example.com/attribution
     cc:license := https://creativecommons.org/licenses/by/4.0/
     cc:morePermissions := https://example.com/more-permissions
     dc:contributor := An updated contributor
     dc:creator := A creator
     dc:description := A description
     dc:rights := © 2020 A creator. Some rights reserved.
     dc:subject := R, xmpdf
     dc:title := An XMP title
     pdf:Keywords := R, xmpdf
     pdf:Producer := R
     photoshop:Credit := A creator
     photoshop:DateCreated := 2020
     photoshop:Headline := A headline
     xmp:CreateDate := 2020-10-10
     xmp:CreatorTool := A creator tool
     xmp:ModifyDate := 2023-01-27T13:37:27.909812682-08:00
     xmpRights:Marked := TRUE
     xmpRights:UsageTerms := This work is licensed to the public under the Creative Commons
          Attribution 4.0 International license
          https://creativecommons.org/licenses/by/4.0/
     xmpRights:WebStatement := https://creativecommons.org/licenses/by/4.0/