Requires the [NVIDIA Container Toolkit](https://docs.nvidia.com/datacenter/cloud-native/container-toolkit/latest/install-guide.html). Falls back to CPU automatically. See [Docker Tags](/guide/docker-tags) for benchmarks.
Chain tools into multi-step workflows and apply them to one image or a whole batch:
1. Open **Pipelines** in the sidebar.
2. Add steps (any tool, any settings).
3. Run on a single file — or up to 200 files at once.
4. Save the pipeline for later reuse.
Pipelines can have up to 20 steps.
### File Library
Every file you process can be saved to your **Files** library. ashim tracks the full version history so you can trace every processing step from the original upload to the final output.
### REST API & API Keys
Every tool is accessible via HTTP:
```bash
curl -X POST http://localhost:1349/api/v1/tools/resize \
Generate API keys under **Settings → API Keys**. See the [REST API reference](/api/rest) for all endpoints, or visit [http://localhost:1349/api/docs](http://localhost:1349/api/docs) for the interactive reference.
### Multi-User & Teams
Enable multiple users with role-based access control:
- **Admin**: full access — manage users, teams, settings, all files/pipelines/API keys
- **User**: use tools, manage own files/pipelines/API keys
Create teams under **Settings → Teams** to group users.
Set `AUTH_ENABLED=true` (or `false` for single-user/self-use without login).