I am not OP, but in the blog post the author mentions he works for Transloadit, which (after googling it as I wasn't previously familiar with it) is a service which handles lots of different file processing tasks for developers (e.g. image manipulation, audio/video encoding, virus scanning, etc.)
If you are a service selling a product targeted towards developers, I can't think of better marketing than something like this, where tons of users will use it for free, but many users (like me) who hadn't previously heard about your core product will find out about it through this.
EDIT: One thing to add about the marketing angle, another commenter mentioned that this was posted multiple times before reaching the front page, and some of the generic "Awesome! Will definitely try this!" comments here by low-karma users makes me think there is some astro-turfing going on. That said, I don't really mind it. Author created a useful tool, open sourced it, and I'm now glad I know about it. Kudos to him and if it helps more people become aware of his business (which obviously funded his creation of this open source tool) more power to him.
Replied to the GP directly about how we find this, you pretty much nailed it!
As for astroturfing: I am certainly guilty of self-promotion. When this post didn’t get traction, after a few days I thought maybe Show HN finds this interesting. In addition, my team of ~5 will have upvoted this post (although that probably works counter productive with HN's algorithms, I couldn’t/wouldn't stop them). Other than that we don’t deploy any schemes here, what you likely see is that, because we exploded on Reddit over the weekend, its users are posting it to HN too.
Back end dev here, and long-time HN lurker. I've never heard of Uppy but I've just bookmarked it and I've very glad to now know of it.
For the few times that I need to build some frontend, usually in HTML and Javascript, I need tools that do one thing well. Uppy looks like that type of tool. It is not some huge library like jQuery that I need to study for a week to use properly.
It is for finding _actionable_ content like this that I come to HN. Thank you OP for posting.
If you are a service selling a product targeted towards developers, I can't think of better marketing than something like this, where tons of users will use it for free, but many users (like me) who hadn't previously heard about your core product will find out about it through this.
EDIT: One thing to add about the marketing angle, another commenter mentioned that this was posted multiple times before reaching the front page, and some of the generic "Awesome! Will definitely try this!" comments here by low-karma users makes me think there is some astro-turfing going on. That said, I don't really mind it. Author created a useful tool, open sourced it, and I'm now glad I know about it. Kudos to him and if it helps more people become aware of his business (which obviously funded his creation of this open source tool) more power to him.