Yiyuen File Upload is a public file-uploading and sharing platform that offers free uploading, sharing, and downloading. Users can upload files individually or in batches, with a maximum size of 2 GB per file. Supported formats include apps and APKs, images, videos, text documents, Office files, and compressed archives.

The service provides image hotlinking and password protection for shared files, with password settings available after users sign in. Downloads are not artificially speed-limited, with speeds of up to 5 MB per second stated by the platform. Files are retained for as long as the platform continues operating, rather than for a guaranteed period.

Yiyuen positions the service as a straightforward option for distributing files publicly and provides help topics covering uploading, sharing, downloads, and comparisons with traditional cloud drives. The platform warns users not to upload sensitive personal information, prohibits illegal content, and reserves the right to remove prohibited files or restrict files generating abnormal traffic