convertor/README.md
rob_otman c9b43e11da docs: enhance README with detailed NVIDIA GPU hardware acceleration instructions
- Added a new section for NVIDIA GPU hardware acceleration, including a sample docker-compose configuration.
- Clarified requirements and notes for using NVIDIA drivers and runtime.
- Improved formatting for better readability and user guidance.

These updates aim to assist users in optimizing performance with NVIDIA GPUs.
2026-01-13 15:40:39 +00:00

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![ConvertX](images/logo.png)
# ConvertX
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<a href="https://trendshift.io/repositories/13818" target="_blank"><img src="https://trendshift.io/api/badge/repositories/13818" alt="C4illin%2FConvertX | Trendshift" style="width: 250px; height: 55px;" width="250" height="55"/></a>
<!-- ![Dev image size](https://ghcr-badge.egpl.dev/c4illin/convertx/size?color=%230375b6&tag=main&label=dev+image&trim=) -->
A self-hosted online file converter. Supports over a thousand different formats. Written with TypeScript, Bun and Elysia.
## Features
- Convert files to different formats
- Process multiple files at once
- Password protection
- Multiple accounts
## Converters supported
| Converter | Use case | Converts from | Converts to |
| --------------------------------------------------------------- | ---------------- | ------------- | ----------- |
| [Inkscape](https://inkscape.org/) | Vector images | 7 | 17 |
| [libjxl](https://github.com/libjxl/libjxl) | JPEG XL | 11 | 11 |
| [resvg](https://github.com/RazrFalcon/resvg) | SVG | 1 | 1 |
| [Vips](https://github.com/libvips/libvips) | Images | 45 | 23 |
| [libheif](https://github.com/strukturag/libheif) | HEIF | 2 | 4 |
| [XeLaTeX](https://tug.org/xetex/) | LaTeX | 1 | 1 |
| [Calibre](https://calibre-ebook.com/) | E-books | 26 | 19 |
| [LibreOffice](https://www.libreoffice.org/) | Documents | 41 | 22 |
| [Dasel](https://github.com/TomWright/dasel) | Data Files | 5 | 4 |
| [Pandoc](https://pandoc.org/) | Documents | 43 | 65 |
| [msgconvert](https://github.com/mvz/email-outlook-message-perl) | Outlook | 1 | 1 |
| VCF to CSV | Contacts | 1 | 1 |
| [dvisvgm](https://dvisvgm.de/) | Vector images | 4 | 2 |
| [ImageMagick](https://imagemagick.org/) | Images | 245 | 183 |
| [GraphicsMagick](http://www.graphicsmagick.org/) | Images | 167 | 130 |
| [Assimp](https://github.com/assimp/assimp) | 3D Assets | 77 | 23 |
| [FFmpeg](https://ffmpeg.org/) | Video | ~472 | ~199 |
| [Potrace](https://potrace.sourceforge.net/) | Raster to vector | 4 | 11 |
| [VTracer](https://github.com/visioncortex/vtracer) | Raster to vector | 8 | 1 |
| [Markitdown](https://github.com/microsoft/markitdown) | Documents | 6 | 1 |
<!-- many ffmpeg fileformats are duplicates -->
Any missing converter? Open an issue or pull request!
## Deployment
> [!WARNING]
> If you can't login, make sure you are accessing the service over localhost or https otherwise set HTTP_ALLOWED=true
```yml
# docker-compose.yml
services:
convertx:
image: ghcr.io/c4illin/convertx
container_name: convertx
restart: unless-stopped
ports:
- "3000:3000"
environment:
- JWT_SECRET=aLongAndSecretStringUsedToSignTheJSONWebToken1234 # will use randomUUID() if unset
# - HTTP_ALLOWED=true # uncomment this if accessing it over a non-https connection
volumes:
- ./data:/app/data
```
or
```bash
docker run -p 3000:3000 -v ./data:/app/data ghcr.io/c4illin/convertx
```
### NVIDIA GPU Hardware Acceleration
For improved performance on NVIDIA GPUs with NVENC/NVDEC support, use this enhanced docker-compose configuration:
```yml
# docker-compose.yml (with NVIDIA GPU support)
services:
convertx:
image: ghcr.io/c4illin/convertx
container_name: convertx
restart: unless-stopped
ports:
- "3000:3000"
runtime: nvidia
group_add:
- 226 # The render group GID on the host (check with: getent group render | cut -d: -f3)
environment:
- JWT_SECRET=aLongAndSecretStringUsedToSignTheJSONWebToken1234
# - HTTP_ALLOWED=true # uncomment this if accessing it over a non-https connection
- FFMPEG_PREFER_HARDWARE=true # Enable hardware acceleration for video encoding/decoding
- NVIDIA_VISIBLE_DEVICES=all # Use 'all' for all GPUs, or '0,1' for specific GPUs (get IDs with: nvidia-smi -L)
- NVIDIA_DRIVER_CAPABILITIES=all # Comma-separated list (e.g., 'compute,video,utility'), 'all' for everything
volumes:
- ./data:/app/data
- /usr/bin/nvidia-smi:/usr/bin/nvidia-smi:ro # Mount nvidia-smi for GPU detection
```
**Requirements:**
- NVIDIA drivers with NVENC/NVDEC support
- nvidia-docker runtime
- The render group GID (226) may differ on your system
**Notes:**
- `group_add` may not be needed in Unraid
- `nvidia-smi` volume mount may not be needed in Unraid
- Hardware acceleration requires: `FFMPEG_PREFER_HARDWARE=true`, NVIDIA GPU detection, and supported video codecs (H.264, H.265, VP9, VP8, MPEG-2, MPEG-4, AV1)
Then visit `http://localhost:3000` in your browser and create your account. Don't leave it unconfigured and open, as anyone can register the first account.
If you get unable to open database file run `chown -R $USER:$USER path` on the path you choose.
### Environment variables
All are optional, JWT_SECRET is recommended to be set.
| Name | Default | Description |
| ---------------------------- | -------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| JWT_SECRET | when unset it will use the value from randomUUID() | A long and secret string used to sign the JSON Web Token |
| ACCOUNT_REGISTRATION | false | Allow users to register accounts |
| HTTP_ALLOWED | false | Allow HTTP connections, only set this to true locally |
| ALLOW_UNAUTHENTICATED | false | Allow unauthenticated users to use the service, only set this to true locally |
| AUTO_DELETE_EVERY_N_HOURS | 24 | Checks every n hours for files older then n hours and deletes them, set to 0 to disable |
| WEBROOT | | The address to the root path setting this to "/convert" will serve the website on "example.com/convert/" |
| FFMPEG_ARGS | | Arguments to pass to the input file of ffmpeg, e.g. `-hwaccel vaapi`. See https://github.com/C4illin/ConvertX/issues/190 for more info about hw-acceleration. |
| FFMPEG_OUTPUT_ARGS | | Arguments to pass to the output of ffmpeg, e.g. `-preset veryfast` |
| FFMPEG_PREFER_HARDWARE | false | Use hardware encoders (NVENC, VAAPI, etc.) when available instead of software encoders for h264/h265 formats. Also enables CUDA hardware acceleration for video input decoding (not applied to image formats). |
| HIDE_HISTORY | false | Hide the history page |
| LANGUAGE | en | Language to format date strings in, specified as a [BCP 47 language tag](https://en.wikipedia.org/wiki/IETF_language_tag) |
| UNAUTHENTICATED_USER_SHARING | false | Shares conversion history between all unauthenticated users |
| MAX_CONVERT_PROCESS | 0 | Maximum number of concurrent conversion processes allowed. Set to 0 for unlimited. |
### Docker images
There is a `:latest` tag that is updated with every release and a `:main` tag that is updated with every push to the main branch. `:latest` is recommended for normal use.
The image is available on [GitHub Container Registry](https://github.com/C4illin/ConvertX/pkgs/container/ConvertX) and [Docker Hub](https://hub.docker.com/r/c4illin/convertx).
| Image | What it is |
| -------------------------------------- | -------------------------------- |
| `image: ghcr.io/c4illin/convertx` | The latest release on ghcr |
| `image: ghcr.io/c4illin/convertx:main` | The latest commit on ghcr |
| `image: c4illin/convertx` | The latest release on docker hub |
| `image: c4illin/convertx:main` | The latest commit on docker hub |
![Release image size](https://ghcr-badge.egpl.dev/c4illin/convertx/size?color=%230375b6&tag=latest&label=release+image&trim=)
![Dev image size](https://ghcr-badge.egpl.dev/c4illin/convertx/size?color=%230375b6&tag=main&label=dev+image&trim=)
<!-- Dockerhub was introduced in 0.9.0 and older releases -->
### Tutorial
> [!NOTE]
> These are written by other people, and may be outdated, incorrect or wrong.
Tutorial in french: <https://belginux.com/installer-convertx-avec-docker/>
Tutorial in chinese: <https://xzllll.com/24092901/>
Tutorial in polish: <https://www.kreatywnyprogramista.pl/convertx-lokalny-konwerter-plikow>
## Screenshots
![ConvertX Preview](images/preview.png)
## Development
0. Install [Bun](https://bun.sh/) and Git
1. Clone the repository
2. `bun install`
3. `bun run dev`
Pull requests are welcome! See open issues for the list of todos. The ones tagged with "converter request" are quite easy. Help with docs and cleaning up in issues are also very welcome!
Use [conventional commits](https://www.conventionalcommits.org/en/v1.0.0/#summary) for commit messages.
## Contributors
<a href="https://github.com/C4illin/ConvertX/graphs/contributors">
<img src="https://contrib.rocks/image?repo=C4illin/ConvertX" alt="Image with all contributors"/>
</a>
![Alt](https://repobeats.axiom.co/api/embed/dcdabd0564fcdcccbf5680c1bdc2efad54a3d4d9.svg "Repobeats analytics image")
## Star History
<a href="https://github.com/C4illin/ConvertX/stargazers">
<picture>
<source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/svg?repos=C4illin/ConvertX&type=Date&theme=dark" />
<source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/svg?repos=C4illin/ConvertX&type=Date" />
<img alt="Star History Chart" src="https://api.star-history.com/svg?repos=C4illin/ConvertX&type=Date" />
</picture>
</a>