34 guides and service pages

Every guide, in one place

Each one covers a single job: what to watch, how often to check, how to keep the alerts worth reading, and — on every page — the cases where this approach will not work.

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Guides

Deals and availability

Notify a channel when a site goes down

Create an incoming webhook for the channel in your chat tool (Slack, Microsoft Teams, Discord or Flock), or a bot token and chat ID for Tele...

SSL certificate expired

Reissue the certificate, deploy it to every server that terminates TLS, restart or reload the web server, and then verify from outside your...

Domain expired

Almost certainly, if you act quickly.

How often to check uptime

Five minutes is right for most sites and is what we default to.

Why alerts get ignored

Make every alert mean something.

Best domain expiry monitoring tools

For most people the right answer is whatever already monitors the site, because domain expiry should not need its own subscription.

Best hosted status page tools

It depends on whether the page should update itself.

Best SSL monitoring tools

It depends on what you are protecting against.

Best uptime monitoring tools

For a personal project, UptimeRobot's free plan with 50 monitors is unbeatable — provided the site is genuinely non-commercial, which its li...

Best website monitoring tools

There is no single answer, because the tools are built around different failure modes.

Price drop monitoring

Point a change detector at the product page, select the region containing the price, and choose how often to check.

Back-in-stock alerts

Watch the product page and select the region that shows availability — the "out of stock" label, the add-to-basket button, or the size selec...

Ticket availability

Watch the event page and select whatever indicates availability — a "sold out" label, the ticket type list, or the checkout button.

Appointment availability

Watch the booking page and select the calendar or slot list.

See it

What an alert actually looks like

Every recorded change is compared word by word and kept with a before-and-after image. This is the real output, shown with worked example data.

competitor.com/pricing Watching: Pricing table
− Pro plan — $49 per month
+ Pro plan — $39 per month
+ Save 20% with annual billing

Price fell from $49 to $39, and an annual discount was added.

2 words added · 1 removed · 4.1% of the watched region

retailer.com/product/… Watching: Availability
− Out of stock
+ In stock — ships tomorrow
+ Add to basket

The item is available again and the basket button returned.

6 words added · 3 removed · 12.5% of the watched region

supplier.com/subprocessors Watching: Subprocessor list
~ Data is processed in the EUthe EU and the United States
+ Added: Northwind Analytics Inc. (United States)

A new subprocessor was added in another jurisdiction.

9 words added · 2 removed · 1.8% of the watched region

Worked example — not live data. Start monitoring

Start with whichever one is your problem.

The free plan needs no card and does not expire. One monitor, one watched page and one heartbeat.