Plumbtern terms of use

Plumbtern: On-Page SEO Checker, published by Zydeno. Last updated 3 November 2026.

Using the extension

You may install Plumbtern and use it for personal and commercial work. This version is free. Do not use it in breach of the law or of the terms of the websites you check.

What it does and does not promise

Plumbtern reports what it reads from the open page at that moment. Length guides are common practice, not search engine rules. It does not check HTTP headers, robots.txt, broken links or other pages, and using it does not promise any position in search results.

No warranty

The extension is provided as is, without warranty of any kind, to the extent the law allows. Zydeno is not liable for indirect losses from its use. Your rights as a consumer under the law of your country are not affected.

Your data

The extension stores data only in your browser (storage.local); nothing is sent to Zydeno or anyone else. See the privacy policy. Fonts and other third-party parts keep their own licences, listed with the extension.

Contact

Zydeno, [email protected]