>>109788680With 4chan X, when uploading an image, you can hold shift and select all the images in series, or ctrl+ click to get random ones. You can hit the + sign next to the name field to open the multi-post function, just hit the larger +sign on the right side just above the body text box to add another post to queue up.
You still have to fill out captchas unless you paid for a pass, but it makes doing story times and image dumps MUCH easier.
Oh, and if you do fill out captchas, you can hit shift+enter to store a handful(they reset so quickly, you'll rarely be able to save more than 6 or 7 at a time) so you can leave and it will auto-post for you.