photo quality problem

[webasker]

When I upload a picture, the quality is very bad, how can I increase the quality and width and height that's when I say new topic in forum and share photo after that upload image.

example

https://vborg.vbsupport.ru/external/2018/01/8.png

[Dave]

Some of the settings can be configured at AdminCP > Settings > Options > Message Attachment Options.

[In Omnibus]

If you're going to be enlarging the images don't use .jpg images. They have no alpha channel and lose resolution. Convert any .jpg image to .png or .svg with any number of free programs.