I built a prototype of something similar with iframes for a gig at eBay a decade ago. Ended up showing it off at the first React conf. Definitely useful to have as much immediate feedback as possible when you're developing.
Glad to see a productized version! Most of my work these days is for internal tools with fixed browser expectations, otherwise I'd probably be downloading a trial right now.
I recall using your product years ago and it was fantastic. It helped me work solo on a web app with ease. Not having CSS and JS skills like a lot of front end devs, it was nice knowing all viewports were handled.
I also tried in my "clean" chrome profile (to rule out extensions) and it's still got really bad scroll lag. This happens as soon as I open the page.
Here is a video though I understand it's hard to convey since you can't see when/how much I'm scrolling. I can tell you I scrolled slowly down and back up consistently through this video.
Even worse, I just found that having that tab open (and visible) makes Chrome (no other app) laggy everywhere. Something is definitely wrong with that page. Also that page was open in a different chrome profile and it still made my main chrome profile lag when just trying to click around the text area for this comment on HN.
Edit: Some extra details for my setup, I have external monitors (4) and the Macbook Pro is closed in clamshell mode. Not sure why either of those things would matter but I figure both those cases are more common for people on HN (external monitors/closed laptop) than the general public so I wanted to mention it.
Those are customers. Just like for example on netlify.com.
I had a title stating that for the longest time, then I noticed nearly all other landing pages simply have it without title and just a clean list of logos, so I changed it to that as well.
I love the idea of the product, I could have definitely used it in the past. And I really love your responses to questions asked here. You're very honest and friendly. If I get into webdev again, I'll definitely give Polypane a shot!
I do not like it when websites (or applications, w/e) do this. I am somewhat OK with "at least 8 characters long" and I even understand its significance (from a security perspective) but not the rest.
I don't. Nine dollars per month for an individual? No thanks. Charge what you like. It's your right to do that, but as a hobbyist there's no chance I'm buying.
Happy to answer any questions folks have!