Post Once serves as a versatile social media cross-posting and content-backup solution tailored for creators, small teams, and agencies overseeing several accounts simultaneously. By publishing through a connected source account within the respective social platform's app, users benefit from Post Once's ability to automatically share new videos and photos, complete with captions, across various platforms such as Instagram, YouTube, Facebook Pages, Threads, X, and LinkedIn. Additionally, users can easily repost Stories between Instagram and Facebook Pages, and the service accommodates videos up to two hours long and in 4K resolution, directing longer content to platforms like YouTube, Facebook, and LinkedIn. For added convenience, posts, videos, and Stories can be securely backed up to cloud services such as Google Drive, Dropbox, Backblaze B2, or Amazon S3, with captions stored alongside the media. The platform also features a dashboard that highlights potential repeat posts for user review, aiding in the prevention of duplicate content. The free version offers up to 10 reposts and 10 backups, while paid options begin at $9 per month, providing users with enhanced capabilities, including support for additional source accounts and unlimited backups. This makes Post Once an invaluable tool for those looking to streamline their social media management and content preservation.