17yo. Probably the nicest React app I’ve ever built. Free tool for screenshots, mockups, and social media posts

Hey r/reactjs!

I’ve made an app where you can cre ate beautiful mockups, screenshots, and social media post images. It’s completely free — no limits. 👉 https://postspark.app

You get tons of customization options: upload your own backgrounds, design custom themes, apply 3D transforms, tweak aspect ratios, fonts, frames, shadow overlays, layouts and more.

You can also annotate any image — draw, add text, stickers, shapes, etc.

Check it out and let me know what you think :)