Polyreader

This is one of the reasons why I am sad that google chrome does not allow extensions on mobile. Other than that, the service itself is good. Basically it takes any article website you're on at the moment, and can convert it to a format that is easy for a Kindle to read, then send it to your send-to-kindle email address. (Theoretically you could use any email address, and read the resultant file on any device.) They also have a "bookmarklet" which is basically some javascript that you can save as a regular bookmark. When clicking the bookmark on desktop (more on mobile later), it gives you much the same popup that the extension does, saving the current website as a document and later sending it to your kindle. The extension and bookmarklet have a 'collections' feature, which allows you to send multiple articles at once, making organization on your kindle somewhat easier. It's not entirely necessary, tbh, but it works flawlessly and the service itself is easily my favorite of it's competitors since their backend handles the articles I want to read rather well, and the resultant document is aesthetically pleasing. - Plus it's free! On the subject of mobile - You can add the bookmarklet to a mobile device, but if you're using mobile chrome, it's important to note that the bookmark manager on mobile chrome is not "context aware", which is to say that it does not have access to any information from the website you're currently on. To use the bookmarklet, you need to instead start typing it's name in the address bar on mobile chrome and let autocomplete suggest the bookmarklet, which you then tap on. This accesses the bookmark in a "context aware" manner and allows the bookmark to gather information from the website you're viewing.