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I have 1000 raw photos that I would like to convert all to jpg. Is there a way I can do this all at once or can I only do it one by one?

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In Lightroom, open the catalog with the photos, select the collection or filter so that only the files you are interested in are shown in the library grid (or undo a filter/collection if you want ALL files).

Select all the files by choosing Edit | Select All (CTRL+A on Windows).

Export as JPG by choosing File | Export (CTRL+SHIFT+E on Windows).

In the Export dialog, choose your output folder, whether you want the JPG files added back to your catalog, and the output settings (resolution, sharpening, etc...)

And you're done!

(Note, I have Lightroom V2.7, but I suspect this process is the same in Lightroom V3.x).

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    \$\begingroup\$ Refinement: In LR5 at least, there's an option in Export to target the same folder as the original. Between that and the "Add to This Catalog" checkbox, you can set up an export preset that basically does exactly what the OP asked for. The only thing it doesn't do for you is automatically delete the DNG files after a successful conversion. \$\endgroup\$
    – Warren Young
    Sep 13, 2013 at 13:43
  • \$\begingroup\$ If you want to do this quickly, use dcraw, a command line program. dcraw -e *.cr2 or whatever your extension is. This will extract the embedded JPEG thumbnail. \$\endgroup\$
    – qrk
    May 10, 2021 at 16:37
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I think I have a good workaround. Of course a plugin for this task would still be the best.
I did this with Lightroom 5.

  1. Add the photos you want to convert to the (empty!) Quick Collection and select them all.
    You could also just select the photos without adding them to any collection. But then it's VERY important that you don't (accidently) unselect any of them. Of course this only works in a single folder. If you use a collection it works with multible folders at once.

  2. Click "Export" an enter the following settings:

    Export Location
     Export To: Same folder as original
     Put in Subfolder: UNcheck
     Add to this catalog: check

    File Renaming
     Rename To: UNcheck

    File Settings
     Your decision

    Image Sizing
     Your decision

    Meta Data
     Include: All Metadata
     Remove Location Info: UNceck
     Write Keywords as Lightroom Hierarchy: ceck

  3. Click "Add" on the bottom left to save the settings as a preset, so you don't have to enter them again the next time.

  4. Click "Export" and wait.

  5. Wait a bit more. Drink some coffe, read a book, take a walk and shoot more RAW files.

  6. Go to the Quick Collection and delete every file in it or delete every selected file if you didn't use the Quick Collection. The JPEGs won't be added to the Quick Collection (or any other collection) automaticly, so don't worry to delete one of the converted JPEGs.

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