Open Source Alternatives to CloudConvert

A file conversion service that transforms files between 212 different formats across 11 categories, including documents, images, audio, video, archives, and CAD drawings. The tool operates directly in the browser and provides per-conversion controls for codec, bitrate, resolution, and quality. It is designed for individual users, hobbyists, and production workloads via an API that allows users to build jobs from import, convert, and export tasks. The service includes a security model where files are removed after processing according to a retention policy.

Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to CloudConvert give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 3 open source alternatives to CloudConvert. The most popular are ConvertX, Gotenberg and Transmute. Most use the MIT or AGPL-3.0 license, and 3 offer an official Docker image.