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LightroomStatistics
Inspiring
February 20, 2026
Answered

SDK during export rename exported file to uuid.jpg

  • February 20, 2026
  • 2 replies
  • 49 views

During export I want to rename my exported images to <uuid>.jpg.

Is there a smarter way then my code below?

exportPath = "D:/Temp"
for i, rendition in exportSession:renditions(renditionParams) do
	-- Wait for the upstream task to finish its work on this photo.
	local success, pathOrMessage = rendition:waitForRender()
	if (success == true) then
			local newFileName = LrPathUtils.child(exportPath, rendition.photo:getRawMetadata("uuid") .. ".jpg")
			local result, message = LrFileUtils.move(pathOrMessage, newFileName)
	end
end

 

Correct answer johnrellis

[View this post in your web browser. It contains formatting and images that don't appear in email.]

 

You’d have to do it one photo at a time, just as you were in the original script, e.g.

for _, photo in ipairs (photos) {
   exportSettings.LR_tokenCustomString = photo:getRawMetadata("uuid")
   ...LrExportSession {
       photosToExport = {photo}, 
       exportSettings = exportSettings}
   ...}

 

I don’t know of any way to export a whole batch and do that rename.

2 replies

johnrellis
johnrellisCorrect answer
Legend
February 21, 2026

[View this post in your web browser. It contains formatting and images that don't appear in email.]

 

You’d have to do it one photo at a time, just as you were in the original script, e.g.

for _, photo in ipairs (photos) {
   exportSettings.LR_tokenCustomString = photo:getRawMetadata("uuid")
   ...LrExportSession {
       photosToExport = {photo}, 
       exportSettings = exportSettings}
   ...}

 

I don’t know of any way to export a whole batch and do that rename.

L
LightroomStatisticsAuthor
Inspiring
February 23, 2026

I was not clear in my question and example code.

My question was whether it is possible to rename multiple photos during export.

The information / answer provided answers both questions, namely how to rename a single photo and that it is not possible to rename multiple photos in this way.

Thanks

    johnrellis
    johnrellis
    Legend
    February 21, 2026

    [View this post in your web browser. It contains formatting and images that don't appear in email.]

     

    When creating the LrExportSession, start with these settings:

     

    Then before creating the LrExportSession, do:

    settings.tokenCustomString = photo:getRawMetadata ("uuid")
    ...LrExportSession (settings)...

     

    L
    LightroomStatisticsAuthor
    Inspiring
    February 21, 2026

    I can’t get it to work.

    From tjhe SDK documentation I have to provide a table with  photosToExport and  exportSettings.
    I included the LR_tokenCustomString = photo:getRawMetadata("uuid"), but this doesn't work because photo is not declared, which is correct.

    Which part am I missing?

    LrTasks.startAsyncTask(function()
    	LogUtil.emptyLogFile()
    	myLogger = LogUtil.getDefaultLogger()
    	myLogger:info("Starting")

    	-- Collect photos to operate on
    	local targetPhotos = catalog.targetPhotos
    	local targetPhoto = catalog:getTargetPhoto()

    	local exportPath = LrPathUtils.child("D:/Temp", "UUID test")
    	LrFileUtils.createAllDirectories(exportPath)
    	myLogger:info("exportPath", exportPath)
    	local photos = catalog:getTargetPhotos()

    	local export_session = LrExportSession {
    		photosToExport = photos,
    		exportSettings = {
    			-- temp folder
    			LR_export_destinationPathPrefix = exportPath,

    			-- full size jpeg
    			LR_format = "JPEG",
    			LR_extensionCase = "lowercase",
    			LR_tokens = "{{custom_token}}",
    			LR_tokenCustomString = photo:getRawMetadata("uuid"),
    		}
    	}

    	export_session:doExportOnCurrentTask()
    	for i, rendition in export_session:renditions() do
    		local success, pathOrMessage = rendition:waitForRender()
    	end
    end
    )

     

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