When I try to upload png image to newsfeed, it just keeps on processing and does not complete uploading. However, other extensions are fine.
If not, please apply this fix: http://www.oxwall.org/forum/topic/29543?page=1#post-126906
If it does not work, please check your console for any errors while uploading the png image. Refer to this tutorial: https://docs.oxwall.org/faq:parse-error-troubleshooting
Make a screenshot of the error and paste it here so we could assist you further. Thanks. Keep us updated.