PageDog

Local visual monitoring for Mac

PageDog

Watch a selected area of a webpage and get notified when it looks different. Checks run locally while this Mac is awake, with small timing variation.

See how it works ->
No accountNo cloud screenshotsNo selectors

Watch list

A clear place for everything PageDog is watching.

PageDog keeps active watches, local status, schedules, latest captures, and visual differences close together so you can scan what changed without digging.

2 total - 2 watching

Watches

+ New watch
2 watching

Checks run locally while this Mac is awake, with small timing variation.

Fogos.pt

fogos.pt

Watching
Last checked5:21 PMScheduleEvery 5 min+2s page waitVisual change0.07%

coinmarketcap

coinmarketcap.com

Watching
16Fear and Greed Index49Altcoin Season Index
Last checked5:20 PMScheduleEvery 5 min+2s page waitVisual change0.73%above threshold

After a notification

Before, after, and the practical details.

Open a watch to review its settings, latest capture, visual difference, and saved change history. PageDog keeps that evidence on the computer where the watch runs.

xWatching

Fogos.pt

https://fogos.pt/

Watch settingsEditChange area
Checks
Every 5 minutes
Sensitivity
Medium
Page wait
2 seconds after load

Watching Last checked 5:21 PM - No meaningful visual change detected.

What changed

The map now shows 13 of 13 incidents.

Latest captureJun 30, 2026, 5:21 PM
Latest visual difference0.07%Medium threshold0.30%Confirming changeBelow threshold
Change history

The map now shows 13 of 13 incidents.

0.63% visual change

No scraping skills required

Point to the place that matters.

01

Enter a URL

Open the page in PageDog and use it normally if a login or prompt appears.

02

Select an area

Draw a box around the calendar, button, map, price, or status region you care about.

03

Keep the app running

PageDog compares local captures on a patient schedule while your Mac is awake.

04

Review the evidence

Open the watch to see the latest capture, before/after history, and visual difference.

Spec boundaries

A small promise, kept on purpose.

It is

A local-first macOS app that tells you when a selected webpage area changes visually.

It is not

An agent, scraper platform, cloud monitor, captcha solver, or browser automation builder.

It stores

Watch settings, local browser session data, captures, and change history on your computer.

It expects

Your Mac to be awake, online, and running PageDog when checks are due.

Made for life's small waiting rooms:

AppointmentsTicketsBooking systemsAvailabilityStatus pages

From the journal

Watching the web without overbuilding it.

June 18, 2026 - 4 min read

Why visual monitoring is often enough

For many waiting games online, the only useful signal is that a small part of a page looks different.

Read article ->

Ready when you are

Stop refreshing. Let PageDog watch.

One desktop app for local visual monitoring on your Mac.