Markedfile is a forensic watermarking tool designed for leak detection and tracing of shared digital files. The application embeds an invisible watermark into files such as images, PDFs, and other supported formats before they are shared privately. When a suspected copy or screenshot is later submitted, the tool attempts to detect the surviving mark and trace it back to the identifier originally assigned by the user. The watermark is placed within the pixel data and is not intended to be visible during ordinary viewing. Markedfile does not store the contents of the uploaded files; only the identifier, file name, file type, status, timestamps, and a detection token are retained while the file is active. The platform offers several pricing tiers with varying limits on active files, file size, PDF page count, and detection duration. The free tier allows up to five active files with a six-month detection window, a maximum file size of 5 MB, and PDFs up to ten pages. Paid plans increase these limits, with the Pro tier supporting up to 50 active files, detection until the record is deleted, file sizes up to 10 MB, and PDFs up to 50 pages. Higher tiers include additional features such as MCP (Model Context Protocol) integration for use with AI assistants like Claude, Cursor, VS Code, or ChatGPT, as well as API access and video support. Annual billing is available at ten times the monthly price, effectively offering two months free. Typical use cases include personal file protection for creators sharing private images, as well as business applications such as contracts, financial documents, board materials, decks, and pre-release designs. The workflow involves uploading a file, assigning a private identifier (such as a recipient name, company, or deal), downloading the watermarked copy, and sharing that copy with the intended recipient. When a leak is suspected, the user uploads the compromised copy or screenshot for detection. The mark is recovered on a best-effort basis, and results depend on the file type and any alterations it has undergone. Technically, Markedfile processes file bytes in memory and does not write them to disk. The active file cap refers to the number of recipient copies that can be protected simultaneously, not a monthly upload quota. A 14-day free trial is available with a credit card required, and users can cancel at any time. The service is priced in USD and is accessible via the website at markedfile.com.