Monitor any web page for changes.

Tell PageDiff what to watch in plain English. It checks on your schedule and uses AI to tell you what changed — and why it matters. Alerts by email, Slack, Discord, or webhook.

See it work on any URL — no signup, no credit card.

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How it works

  1. 1

    Add a page

    Enter any URL and get a live snapshot in seconds.

  2. 2

    Choose what matters

    Describe it in plain English ("tell me when the pricing or headline changes"), or watch the whole page.

  3. 3

    Get AI-powered alerts

    On your schedule, PageDiff catches changes and sends a plain-language summary of what changed and why it matters — by email, Slack, Discord, or webhook.

What PageDiff does

AI summaries that cut the noise

Reads every change, writes a plain-language summary, and scores how significant it is — so you're not pinged for a reordered footer.

AI summary card

Plain-English watch conditions

No brittle CSS selectors or XPath. Describe what counts as a change, and get alerted only when it actually happens.

Watch condition input

Text, visual & HTML diffs

Compare side-by-side text, pixel-level visual, and raw HTML — see exactly what moved.

Diff viewer

Alerts on your channels

Email, Slack, Discord, or a signed webhook. Add CC recipients and set a significance threshold so only meaningful changes reach you.

Alert example

Monitor any public page

A few of the things teams keep an eye on with PageDiff:

What to expect

Frequently asked questions

Do I need a credit card to try it?

To monitor a page you'll need a plan, which requires a card — Starter includes a 14-day trial; Pro and Business bill immediately. You can preview a page first without an account.

What can I monitor?

Any public web page — the whole page or a specific part — and you describe in plain English what counts as a change.

How often does PageDiff check?

From hourly to daily on Starter, as often as every 15 minutes on Pro and every 5 minutes on Business.

How does the AI help?

It reads each change, summarizes it in plain language, and scores its significance so you're alerted to what matters.

Is my data secure?

Your snapshots are private to your account and never shared or sold; delete a monitor or your account anytime. Security →

Can I cancel anytime?

Yes — no contracts or cancellation fees. Cancel whenever you like and keep access through the period you've paid for.

Never miss a change that matters.

Tell PageDiff what to watch in plain English, and get an AI summary of what changed — and why it matters — by email, Slack, Discord, or webhook.

Try it now →