Web page monitor
Point it at one public page, or one element on it, and get an email with the changed lines when the readable text moves.
A monitor is one page
Each monitor holds one public page address and one interval. It reads the whole page, or one element you point at with a CSS selector.
Selector mode is the precise one: it reads only that element, so a sidebar, a footer or a banner moving does not matter. If the element stops matching, the monitor reports that the selector was not found and keeps the last text it read as the baseline, rather than reporting an empty page as a change.
Text, not pixels
Two versions are compared as readable text with the noise stripped out. What is left is hashed, and an email goes out only when that hash moves, so the alert means the words really changed.
A page that cannot be reached is not treated as a change: after 3 failed checks in a row one notice is sent, and no difference is invented. A page that answers with a bot wall is reported as blocked.
Intervals and plans
Each plan sets the fastest interval it will accept. Free checks every 60 minutes at the fastest, 15 minutes on Pro and 10 minutes on Business. 3 monitors on Free, 25 on Pro, 100 on Business.
Checks are never counted, so there is no monthly allowance to run out of and no bill that grows with the number of times a page is read.
Try a page before you sign up
The preview tool on the home page (/) needs no account. Paste a public page address, add a selector if you want one, and read the exact text that would be watched. Up to 20 previews a day are allowed from one address.
The pricing page (/pricing) lists the plans, the interval each one allows and what each one costs. It reads the same plan configuration the server enforces, so the numbers match.
Web page monitor questions
Can I watch a page that needs a login?
No. This watches public pages only: it never sends cookies, never signs in and never claims to be a browser. A page that needs a session usually comes back as blocked, or as almost no text, and the monitor says so instead of reporting a change.