is it safe to remove language files to save space in osx?

It seems like by removing Language Files I can save about 1.18Gb space.

I did a google on this and I find conflicting views regarding this.

I don't need these language files. I just want to confirm it is side-effect free

Just to provide an actual answer to this, even if it is speculative...

Like some of the commenters, I've also tried this in the past, with varying results. I don't remember specifically which apps were affected, but it was sufficient that I needed to reinstall some.

I'd say on balance it's simply not worth the risk/effort, balanced against the amount of space they take up on your drive.

I will also add that a lot of those clean-up apps like to invent 'problems' that they can 'solve' for you, in order to justify their existence.