A competitor's pricing page, a supplier's stock list, a permit board: most small businesses have a page or two worth watching. Checking by hand never lasts. Here is how to monitor a website for changes automatically, what the free tools cover, and where they stop.
The page changes on a Tuesday. You find out a month later, when a customer mentions your rival's new pricing or the permit window you meant to catch has closed. Watching a handful of pages by hand is the kind of chore that survives about two weeks of good intentions, which is why it belongs to a machine. The free options cover more cases than most people expect.
A calendar reminder and your own eyes. Unfashionable, free, and fine for one page you check monthly. It fails once the list grows past a page or two, because the habit dies.
Change-detection services and browser extensions. A whole category of tools exists that snapshots a page on a schedule and emails you if something on it changes. Free tiers typically cover a handful of pages checked daily, and setup is usually just pasting a web address. For "tell me if this page changes at all", this category is the right answer, and you should try it before paying anyone.
RSS feeds. Some sites, especially government and news pages, still publish feeds that push updates to you. Where a feed exists, it beats scraping. It is worth thirty seconds to check before building anything.
The free tools answer one question: did this page change? They struggle with the questions that come next.
The step up from "alert me" is "extract it": a small scraper that visits the page on a schedule, pulls the specific fields you care about, appends them to a spreadsheet, and only notifies you when a value you care about actually moves. That turns a noisy alert stream into a quiet log you can chart, compare, and act on. Automating web data into a spreadsheet explains what that looks like in practice.
This is the kind of small, boring, useful tool Keelflo builds: scoped to your exact pages and fields, quoted flat, built once, owned by you. No subscription to the builder; if it runs in the cloud on a schedule, the small hosting cost is passed through at cost.
Use a change-detection service or browser extension. Free tiers generally handle a few pages checked once a day. Paste in the page address, set the check frequency, and you get an email when the page changes. Start there; only spend money if the free tier's limits actually bite.
Match the pace of the decision it feeds. Competitor prices you quote against weekly need daily checks at most. A license rule page might only need a weekly look. Checking more often than you can act on the result just makes noise.
Sometimes, but this is where free tools usually stop and where care is needed: a login means you agreed to that site's terms of service, and some terms restrict automated access. Check the terms before automating anything behind an account.
That is the sign you have outgrown change detection and want extraction: a scraper that logs the values you care about to a spreadsheet each run. History, trends, and comparisons all become possible once the data lands in rows and columns instead of email alerts.