How do I stop visual monitoring flagging ads or rotating banners?

Draw ignore-zone rectangles on the screenshot so Lemwatch masks noisy regions (ads, timestamps, carousels) before comparing pixels.

Quick answer

Open the monitored page, click Ignore Zones, and draw rectangles over noisy regions. Lemwatch masks those pixels black in both baseline and current screenshots before running the diff.

Common ignore targets

Where to find it in Lemwatch

Site → Visual Monitoring → <page> → Ignore Zones.

FAQ

Do ignore zones survive layout shifts?

Zones are pinned to CSS coordinates. Big layout changes may require redrawing.

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