There are two possible locations depending on your installation:
If the Effects folder doesn’t exist, create it manually. paint net alpha to 255 plugin download
Paint.NET has a built-in Adjustments > Brightness / Contrast and Curves for Alpha, but those require manual tweaking. The native Make Opaque function is missing. Here is where the dedicated plugin shines: There are two possible locations depending on your
| Feature | Built-in Paint.NET | Alpha to 255 Plugin | | :--- | :--- | :--- | | One-click full opacity | No | Yes | | Preserves original colors | Sometimes changes | Perfectly preserved | | Works on selections | Partial | Yes | | Batch-ready via macros | No | Yes (with additional tools) | If the Effects folder doesn’t exist, create it manually
Common use cases:
Because these workarounds are limited, the plugin is strongly recommended.
Once you have the correct .dll file, follow these exact steps: