---
applyTo: "Fuchs/**,OCORE/**,OCORE_web/**,OCORE_web_pdf/**"
---

# SixLabors ImageSharp Instructions

## Licensing (v4.0.0+)
- `SixLabors.ImageSharp` v4.0.0+ requires a license; builds fail validation without one.
- **Do not downgrade ImageSharp** to avoid the license requirement.
- Each project that references ImageSharp needs its own discoverable `sixlabors.lic` file in the project root.
- Tracked license files exist for `OCORE`, `OCORE_web`, and `Fuchs`. Use `OCORE_web/OCORE_web/sixlabors.lic` as the canonical Community-license template.
- Do **not** create untracked local duplicates of `sixlabors.lic` — an untracked copy blocks `git pull` when upstream adds a tracked one.

## License File Format
A single-line Community license payload:
```
Id=...;Kind=Community;ExpiryDateUtc=...;Key=...
```

## v4.0.0 API / Namespace Changes
When updating or fixing ImageSharp-related code, account for these breaking moves:

| Removed / old | Use instead |
|---------------|-------------|
| `using SixLabors.ImageSharp.ColorSpaces;` | Removed — delete if unused |
| `using SixLabors.ImageSharp.Web.DependencyInjection;` | `using SixLabors.ImageSharp.Web;` |

- `AddImageSharp(...)` / `UseImageSharp()` resolve from `SixLabors.ImageSharp.Web` (plus `.Commands` and `.Processors` for related types).
- After any ImageSharp version change, rebuild and confirm middleware bootstrap in `OCORE_web/OCORE_web/web/OCORE_appbuilder.cs` still compiles.