Register My Photos prepares US Copyright Office group registrations for published (GRPPH) and unpublished (GRUPH) photographs. Photos are read in your browser and not uploaded. It produces a titles list in the Office's template and upload-ready zips under 500 MB, with up to 750 photos per claim.
Checking your photos is free. Downloading needs a license at $59 USD a year, auto-renewing, with unlimited claims. You still file in the Office's eCO system and pay the Office's separate fee. The site gives no legal advice and is not affiliated with the US Copyright Office.
Registering photos as a group means filling in the Office's titles list by hand, naming it exactly right and splitting images into upload-sized zips. Register My Photos does that preparation in the browser so photographers and product sellers can file faster, without uploading their photos anywhere.