One of the web's essential add on's, will save web pages for future reading, the premium version is free for all which makes it impossible not to use.
Also first class service from Instapaper & a seamless app
READ ADDENDUM BELOW FIRST
However, since late May,Instapaper has blocked users in the EU as it struggles to field being eady for GDPR, something it's parent company mangaged with ease.
Until it sorts this out & restores access to users, stay away, and it might be usefull if Instapaper upped it's customer service & actually talked to people