Aeon magazine has a very nice new Save to Instapaper drop-down on its articles, which might usefully be copied by ejournals offering articles in HTML.
Compare the blissful ease of doing this with the impossibility of saving Digital Arts magazine’s new 2015 creative trends survey article to Instapaper. Impossible because of the database-driven URL structure, which loathsomely uses ? in the URL to spawn a new page hanging off of a static URL. I ended up having to copy-paste to a .txt file and then used Amazon’s Send to Kindle desktop software. I guess Digital Arts are assuming their younger clear-eyed readers are going straight to the page on an iPad, rather than needing the ‘old-eyes friendly’ font-scaling on a Kindle.
No mention of this Aeon button on the Instapaper official blog in 2014, so I’m guessing it’s custom to the editors, probably wrapped up in a WordPress widget or similar. But their little button looks like it can be fairly easily implemented in a DIV in your HTML code…
Much as I love Instapaper, in all fairness I should say that it’s compeletely unreliable, even when you’re paying for it. I’ve lost count of the times I’ve gone to save news or journal articles only to find that the service is down.