Visual monitor snapshots your websites on a schedule and diffs every pixel and line of markup. When something moves, you get told — with proof.
free plan · 10 sites · 100 checks/day
drag the seam — this is what every alert looks like
snapshot
Playwright renders the page — desktop, tablet, or mobile — and stores a screenshot plus the full HTML.
compare
Every run diffs against the last snapshot: pixelmatch on pixels, line diff on markup. Noise below your threshold is ignored.
notify
A change worth seeing becomes an email, a Discord ping, or a Slack message — with a summary of what moved.
Screenshot comparison down to the pixel, with a rendered diff image for every change.
Added and removed lines of HTML, highlighted per snapshot.
Watch one element — a price, a stock badge — or hide the noise: cookie banners, carousels, ads.
Checks every 1, 3, 6, 12, or 24 hours, with automatic backoff when a page fails.
Optional plain-language explanation of what changed and whether it matters.
Hold alerts overnight and skip repeated identical diffs.
Point it at a page. It keeps watch.
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