To rotate an image in libreoffice [90 /180]
We cannot rotate directly rotate image in libreoffice writer.
Right click on image –> edit with external tool… –> open in external editor .
Rotate to required Degree & save & close. Image get automatically get updated in writer.
If you are using Linux, you can use gthumb for editing the image.
If image is in png format while inserting, You can rotate desired degree in gthumb & Save. The following option should be used – image size to bounding box & background to transparent.
You can use any image editor that support png image, image size to bounding box & background to transparent.
But text will have square area bounded to image. To re-flow the text you can use contour option in wrap menu.
You can get as shown in the image below.
you can open the file in draw & rotate. Then paste file.