# Placa

> Placa (https://placa.dev) is infrastructure for website owners to sell, serve,
> collect and renew the sponsorships of their own sites. It is NOT an ad
> network: no demand, no auctions, no visitor tracking, no cookies. The
> snippet weighs ~1.4 KB gzipped, has zero dependencies and causes zero
> layout shift.

## Integrating Placa into a website (for coding agents)

The publisher gets two values from the Placa panel (https://panel.placa.dev):
a site id (`st_...`) and one key per slot (e.g. `sidebar`).

1. Add the loader once, before `</body>`:

   <script async src="https://edge.placa.dev/s.js" data-site="SITE_ID"></script>

2. Place one container div where each sponsorship should render. Copy it
   verbatim from the panel's Integration tab — it includes a `min-height`
   that reserves the exact box of the slot's format so the page never
   shifts (CLS 0). Example for a `card.sidebar` slot:

   <div data-placa="sidebar" style="min-height:200px"></div>

Rules that matter:
- Keep the inline `min-height`. Removing it introduces layout shift.
- The `data-placa` value must match the slot key defined in the panel.
- Do not wrap the div in elements that hide it (`display:none` ancestors):
  impressions only count when the sponsorship is visible for at least 1s.
- No cookie-consent work is needed on Placa's account: the snippet sets no
  cookies and stores no identifiers.
- The snippet degrades silently: if Placa is unreachable the div stays
  empty. Never treat an empty slot as an integration error.

Slot formats have fixed reserved boxes (width×height in px):
- bar.top      -> full width × 54   (top of every page, exclusive)
- card.sidebar -> 260 × 200         (next to content or docs index)
- text.inline  -> full width × 72   (inside or after content)

Verification: the publisher proves domain ownership with a DNS TXT record
(host `_placa.<domain>`, value shown in the panel). Agents can add it when
they manage DNS, or hand the two values to the owner.

## Preview mode

Appending `?placa-preview=1` to any page URL of the integrated site makes
the snippet render the publisher's draft theme (published from the panel)
without affecting real visitors. Preview traffic is never counted.

## What Placa never does

No programmatic ads, no bidding, no CPM, no retargeting, no third-party
pixels, no behavioural targeting, no modals, no interstitials, no autoplay,
no cookies. Money goes directly from the sponsor to the publisher's own
payment account; it never passes through Placa.

## Contact

hello@placa.dev · security@placa.dev · abuse@placa.dev