On desktop, drag a sticky onto the wall. On a phone, tap a colour, then tap a spot. Each note adjusts to fit its text. An optional “Need an idea?” prompt offers a sentence starter, and a small sparkle confirms when the note has stuck.

Drag to explore the wall, zoom with the mouse wheel, a pinch or the buttons, and press Fit to see everything. A mini map helps visitors keep their bearings. On desktop, a soft glow follows the cursor; tapping a distant note brings it smoothly into view.

Replies sit beside the original note, connected by a dotted line. On a return visit, the browser indicates whether someone has replied. No sign-up is needed.

Every note has a direct link and its own preview image for sharing on WhatsApp, Facebook, X and LinkedIn. On supported phones, Share opens the native share sheet with a story-format image that can be used on Instagram or TikTok.

Each shared image asks “What would you add?”, inviting others back to the wall.

Spam protection combines a Turnstile check, a limit of two notes per minute and a restriction on links. Notes otherwise appear immediately, as written.

An AI check asks three simple questions: does the note name a doctor, name a clinic or contain offensive language? These checks flag notes for the owner’s review; they don’t rewrite or automatically remove them. Off-topic comments are allowed.

The review panel puts red-flagged notes first. Removed notes go into a bin and can be restored.

A Cloudflare Worker serves the wall and generates a page for each shared note. Supabase Edge Functions handle note storage and preview-image generation.

Generating images inside the Worker exceeded the free plan’s CPU limit, so that work was moved to an Edge Function. Only the sticky note is rendered dynamically, against a background prepared in advance. This keeps processing light and hosting costs close to zero.