###### (This function is part of SDL_image, a separate library from SDL.)
# IMG_SavePNG_IO

Save an SDL_Surface into PNG image data, via an SDL_IOStream.

## Header File

Defined in [<SDL3_image/SDL_image.h>](https://github.com/libsdl-org/SDL_image/blob/main/include/SDL3_image/SDL_image.h)

## Syntax

```c
bool IMG_SavePNG_IO(SDL_Surface *surface, SDL_IOStream *dst, int closeio);
```

## Function Parameters

|                |             |                                                                               |
| -------------- | ----------- | ----------------------------------------------------------------------------- |
| SDL_Surface *  | **surface** | the SDL surface to save.                                                      |
| SDL_IOStream * | **dst**     | the SDL_IOStream to save the image data to.                                   |
| int            | **closeio** | true to close/free the SDL_IOStream before returning, false to leave it open. |

## Return Value

(bool) Returns 0 if successful, -1 on error.

## Remarks

If you just want to save to a filename, you can use
[IMG_SavePNG](IMG_SavePNG)() instead.

If `closeio` is true, `dst` will be closed before returning, whether this
function succeeds or not.

## Version

This function is available since SDL_image 3.0.0.

## See Also

- [IMG_SavePNG](IMG_SavePNG)

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[CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction)