WP Scarcity Bar is a lightweight WordPress plug‑in that lets you pin a high‑converting urgency bar to the top or bottom of any page. In the bar you can add your own headline, persuasive text, a countdown timer and an optional call‑to‑action button — no coding, no design skills and no developers needed. WP Scarcity Bar is a lightweight WordPress plug‑in that lets you pin a high‑converting urgency bar to the top or bottom of any page. In the bar you can add your own headline, persuasive text, a countdown timer and an optional call‑to‑action button — no coding, no design skills and no developers needed.