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SPECIFICTION
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Transmute

transmute.sh

Free plan WebAPISelf-hosted
Visit transmute.sh
Spec score 7.2 #45 of 69 in File Conversion Software

Spec sheet

Purpose
Transmute is a self-hosted file converter and compressor for images, video, audio, data, documents, and 3D models.Read 11 Oct 2026 · transmute.sh
Audience
The maker describes Transmute as a self-hosted option for people who want private file conversions on their own hardware.Read 11 Oct 2026 · transmute.sh
Deployment
The maker provides a Docker Compose quickstart for running Transmute on the user's hardware.Read 11 Oct 2026 · transmute.sh
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.Read 11 Oct 2026 · transmute.sh
Privacy
The maker says files stay on the user's own hardware and are not uploaded to third-party servers.Read 11 Oct 2026 · transmute.sh
License
The project's GitHub repository identifies the software as MIT licensed.Read 11 Oct 2026 · github.com
Authentication
The project README lists built-in user accounts, role-based access, API keys, and OIDC single sign-on support.Read 11 Oct 2026 · github.com
Compression
It compresses images, PDFs, audio, video, and GIFs while keeping their format, with selectable compression levels.Read 11 Oct 2026 · transmute.sh
Conversions
The homepage lists image, video, audio, 3D model, data, document, and draw.io diagram conversions.Read 11 Oct 2026 · transmute.sh
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.Read 11 Oct 2026 · github.com
OIDC integrations
The homepage names Authentik, Authelia, and other OpenID Connect providers as sign-in options.Read 11 Oct 2026 · transmute.sh
Themes
The homepage says the interface includes seven themes and supports dark and light modes.Read 11 Oct 2026 · transmute.sh

Plans and prices

Free, open source Free No file size limits · no watermarks · no rate limits · no paid tiers Read 11 Oct 2026 · transmute.sh

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Where Specifiction places it

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