If I Uninstalled My Browser, Then Reinstalled

[Rtaxron]

would it come back with some of the added changes I had made previous, like my toolbar, addblocker, font styles & sizes, or come back as the basic original?

[Rtaxron]

Sorry,
Its Google Chrome.

[dannyk13]

It would come back with the default settings which would not include any changes you have made.

[Buenchico]

While I certainly wouldn't trust an uninstallation followed by a fresh installation to preserve all (or most) of your settings it might do so.

If you uninstall Firefox, for example, and then reinstall it, your bookmarks, settings, etc magically reappear. That's because uninstalling the active part of the program doesn't delete your Firefox profile and that's then re-used when you reinstall the main program. So there's a possibility that the same would apply to Chrome.

However if Chrome's playing up, rather than uninstalling and then reinstalling, the first thing to try is resetting it. This explains how to do it and, importantly (in view of your question), it tells you what will, and won't, change:
https://support.google.com/chrome/answer/3296214?hl=en-GB

[Rtaxron]

Thanks folks,

Will give it a try tomorrow.