No. All social tools work without any account connection. They process publicly available data or work with content you paste directly — no OAuth or social login required.
No. These are analytical and formatting tools only. They help you prepare, format, and optimize content — but the posting itself is always done by you, in control.
Yes. Character limits are kept up to date with each platform's current specifications. Twitter/X, Instagram captions, LinkedIn posts, and other platforms all have specific limits reflected in the tools.