Show HN: Generate random gradients like on OpenAI's website

5 venkii 3 8/14/2025, 4:16:40 AM gradients.venki.dev ↗

Comments (3)

venkii · 3h ago
Hey HN!

Check out this fun tool I built to make cover images for my blog. The main goal: interesting looking random gradients, that all draw from a single color palette.

I stumbled upon this post from Justin Jay Wang [1], who designed for OpenAI - describing methods for random gradients, including the one that shipped on OpenAI’s homepage from 2020-2022.

Since the post included ~10 SVGs, I was able to reverse engineer the SVG parameters, and decided to put up a generator. You can see the exact deets in my Github README [2].

I also use it to generate cover images for my Substack [3] - if you want to see what using a bunch of images generated by it looks like.

[1] https://justinjay.wang/methods-for-random-gradients/

[2] https://github.com/venkr/gradient-gen

[3] https://venkii.substack.com/

beeman · 2h ago
Looks awesome! It would be good to add a license to your repo!
Stevemiller07 · 3h ago
Nice work. Gradients can add a dynamic feel without distracting users, and OpenAI’s subtle animated style is a good example. A generator like this makes it easy to experiment with color palettes and get consistent, visually pleasing results quickly.