There are online slicers like this (I haven't used it myself): https://icesl.loria.fr/slicecrafter/ but you still need to save the files to an sd card. Source: over 1 year ago

To do a quick test use https://icesl.loria.fr/slicecrafter/ works for me all the time. Source: almost 3 years ago

Use astroprint.com, I get good prints from the default profile using this. Tweak to your liking. Source: over 1 year ago

Thats what my dad did and it worked for me, my printer had another 3 days of work before its first print, also to get your prints to stick to the plate (if you have this problem) put some painters tape over the deck and put spray adhesive over the tape, wait for it to dry, and print. For software to use on windows (or mac) download cura (its free) and for chrome (or if you dont want to download/ have a slow... Source: over 1 year ago

I'd certainly reccomend it since you need to convert the 3d model into gcode that the printer can process, but there are a handful of web based slicers like these: realvisiononline.com astroprint.com grid.space/kiri/. Source: over 2 years ago

That should get OctoPrint up and running! Now as for slicing, I use Astroprint! It’s pretty easy to add the Astroprint plug-in to OctoPrint, and works like a charm! With my Ender 3 it uses Cura 3.6.0 as the default slicer, and I’ve not had any issues with it so far. (Outside the normal growing pains of learning to 3D print, anyway.) Astroprint is free for a normal account, so you can be up and running quickly and... Source: about 3 years ago