Transmute

What it does

API

The homepage says every conversion available through the interface is also available through a REST API, with API documentation at /api/docs when running.checked 11 Oct 2026

Audience

The maker describes Transmute as a self-hosted option for people who want private file conversions on their own hardware.checked 11 Oct 2026

Authentication

The project README lists built-in user accounts, role-based access, API keys, and OIDC single sign-on support.checked 11 Oct 2026

Compression

It compresses images, PDFs, audio, video, and GIFs while keeping their format, with selectable compression levels.checked 11 Oct 2026

Conversions

The homepage lists image, video, audio, 3D model, data, document, and draw.io diagram conversions.checked 11 Oct 2026

Deployment

The maker provides a Docker Compose quickstart for running Transmute on the user's hardware.checked 11 Oct 2026

Deployment security

The project README recommends placing Transmute behind a reverse proxy with TLS and rate limiting if exposing it beyond a trusted local network.checked 11 Oct 2026

License

The project's GitHub repository identifies the software as MIT licensed.checked 11 Oct 2026

OIDC integrations

The homepage names Authentik, Authelia, and other OpenID Connect providers as sign-in options.checked 11 Oct 2026

Privacy

The maker says files stay on the user's own hardware and are not uploaded to third-party servers.checked 11 Oct 2026

Purpose

Transmute is a self-hosted file converter and compressor for images, video, audio, data, documents, and 3D models.checked 11 Oct 2026

Themes

The homepage says the interface includes seven themes and supports dark and light modes.checked 11 Oct 2026