How designs work. Write HTML, CSS, and JavaScript using the live editor. Once published, your design is an installable overlay that other streamers can drop into OBS.

• Private — visible only to you. Use this while iterating.
• Unlisted — anyone with the install link can grab it. Good for sharing a link without going through gallery review.
• Public — listed in the public gallery for any streamer to discover. Requires admin review.

💡 Need help building a design? Ask Claude / ChatGPT / Gemini something like: "Follow the design docs at https://streamoverlay.app/designs-guide.md and build me a spooky alert design."