Omnem Gradibus by Manuel Alejandro Jiménez Quintero

This add-on automatically displays all steps in one page for each article in Instructables.

So, you'll don't have to do click on "View All Steps" button every time you open an Instructables article (with just one tab open do a click in the button isn't a heavy work but with many tabs open...). I really think that with this manner you'll get a more enjoyable experience in this great site.

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You can read the source code in the following repository:

Omnem Gradibus on Bitbucked