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Screenshot debugging

Capture a screenshot of your page at the moment an incident opens so you can see exactly what the browser rendered during an outage.

When a monitor goes down, HowlOps can capture one screenshot per incident so you can see exactly what the browser rendered at the moment the incident opened.

How it works

When a monitor goes down and an incident opens, HowlOps probers use a headless Chromium browser to load the page and capture a PNG screenshot. Capture is automatic and happens once per incident, not on every failed check. The screenshot is attached to the incident and available in the monitor's check history.

Enable screenshots

  1. Open a monitor's settings.
  2. Go to Advanced Settings.
  3. Enable Capture screenshot on incident.
  4. Save.

View screenshots

Screenshots appear in:

  • Monitor detail → Check History — on the check that opened the incident.
  • Incidents → [Incident] → Timeline — the single screenshot captured when the incident opened.
  • Alert notifications — paid-plan users receive the screenshot as an attachment in Slack/email alerts.

Limits

  • Availability: included on every paid Uptime plan (S, M, L), with no fixed monthly cap.
  • File size: 10 MB per screenshot.
  • Retention: 7 days, after which screenshots are deleted automatically.

Screenshot debugging requires a Playwright-enabled prober; plain HTTP probers cannot capture screenshots.

FAQ

Does screenshot capture affect check timing? No. Capture runs out of band when an incident opens, not on every check. Your regular monitor checks are unaffected.

How many screenshots are captured per incident? One — a single screenshot at the moment the incident opens.

Are screenshots private? Yes. They are only accessible to members of your workspace.

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