Increase the upload size of the files

Jappix and filebin do not allow to upload files greater then 500kb.
How to increase the upload size?
Can there be a way by which the photo automatically shrink to smaller size before upload (for eg. if a photo of 1MB is uploaded ,it reduces to 100 or 200kb before uploading then gets uploaded) ?

You have to play with the PHP settings, but this is a bug, concerning the package itself. Please open an issue on both package repositories:

No it is only possible by shrinking manually before the upload.