ConvertFileFast is a file conversion API for developers and AI agents. One REST call converts documents, images and data files between formats (PDF, Word, Excel, PowerPoint, HTML, Markdown, JPG, PNG, WebP, HEIC, CSV, JSON), and runs PDF operations such as merge, split, compress, rotate, protect and unlock. It ships an MCP server (hosted endpoint, or local install via uvx/npx) so assistants like Claude, Cursor and ChatGPT agents can convert files directly, with prepaid credits and auto-recharge for autonomous use. Free monthly allowance on sign-up.
