Automated spelling and grammar checking is now standard equipment in word processing programs - but checking the spelling of a website automatically has been relatively cumbersome up to now. Google Chrome is taking a first step in this direction with an integrated check in multi-line input fields (textarea). Now there is a service that makes this possible for entire websites.
The Duden-Web-Proof service checks websites at the push of a button without the installation of additional software - all you have to do is enter the URL. After the check, the user receives a detailed check report with correction suggestions for grammar and spelling, which can be viewed interactively directly on the website.
However, the offer is not free: the basic price is €5.89 (including VAT) for up to five pages. Private users can still test the service for free: one URL per day is possible. The service only stores the root domain internally and obviously only differentiates based on this characteristic. It is certainly possible to have your entire website tested for free using short URL services such as bit.ly and the like.