No, the CKEditor Cloud Services On-Premises version does not inherently require internet access. While the cloud-based version (SaaS) needs internet connectivity to work, the On-Premises version is designed to be self-hosted and can operate within a local network.
That said, internet access may still be useful for:
- Package installation and updates – downloading the latest builds, plugins, and security patches from npm or theCKEditor 5 GitHub repository.
- License verification & management – if your plan includes premium features, some services may need periodic online validation.
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Documentation & support – accessing CKEditor Ecosystem Documentation and developer resources.
If your environment is fully offline, you’ll just need to make sure you download all required packages, plugins, and builds in advance.