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Dynamic Sky
A living sky background for websites in vanilla JS
Most web “skies” are fake: a static gradient or a looping video. Dynamic Sky stands out by rendering a physically based day-to-night atmosphere from real time and location, including twilight and a night starfield, in vanilla JavaScript. Ship it with one script and two containers. The homepage is the proof — scrub time, compare cities, or pin time and change place.
Hey Product Hunt! 👋
Dynamic Sky is a vanilla JavaScript library for adding a living sky background to a website.
I built the first versions for my personal site. I wanted a sky that felt alive — blue midday light, warm twilight, and stars after dark — driven by real time and location, not a static gradient or video loop. Once it worked there, I decided to package it and open source it so other developers could drop the same atmosphere into their own projects.
The homepage is demo-first: scrub the day, compare cities, and pin time while changing place before you ever read the API. When you're ready to use it, the integration stays small: one script, two containers, init(), and updateSky(date).
I'd love feedback on where you'd use this kind of atmospheric background and what API ergonomics would make it easier to drop into real projects.
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About Dynamic Sky on Product Hunt
“A living sky background for websites in vanilla JS”
Dynamic Sky was submitted on Product Hunt and earned 4 upvotes and 1 comments, placing #149 on the daily leaderboard. Most web “skies” are fake: a static gradient or a looping video. Dynamic Sky stands out by rendering a physically based day-to-night atmosphere from real time and location, including twilight and a night starfield, in vanilla JavaScript. Ship it with one script and two containers. The homepage is the proof — scrub time, compare cities, or pin time and change place.
Dynamic Sky was featured in Design Tools (261.8k followers), Open Source (68.7k followers), Developer Tools (517.4k followers) and GitHub (41.4k followers) on Product Hunt. Together, these topics include over 162.1k products, making this a competitive space to launch in.
Who hunted Dynamic Sky?
Dynamic Sky was hunted by Aakaash Jois. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Dynamic Sky stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Aakaash Jois