Visualping, Distill and changedetection.io all watch web pages and tell you when they change. Watchmint does the same job, built for people who want to drive it from code or an AI agent rather than a browser extension or a web app. Here's how they differ, as each product describes itself on its own site (checked on 31 October 2026).
At a glance
| Watchmint | Visualping | Distill | changedetection.io | |
|---|---|---|---|---|
| Main way to use it | REST API and MCP tools | Web app | Browser extension, plus cloud monitors | Web app; the project is open source |
| Text changes | Yes | Yes | Yes | Yes |
| Visual (screenshot) changes | Yes | Yes | Not on its home page | Not on its home page |
| Watch part of a page | CSS selector | Yes | Select parts of the page | CSS/xPath rules |
| Webhooks | Signed, with the diff | Listed with Slack, MS Teams and API | Not on its home page | Over 85 notification types |
| Free or entry plan | Free: 300 checks a month | Free personal use plan | Free: 1,000 checks a month | Hosted: $8.99 a month |
"Not on its home page" means we didn't find it there, not that the product can't do it.
When Visualping is the better choice
If the people watching pages aren't developers, Visualping's web app is easier: you pick a page and an area in the browser. It compares visual, text and code changes, shows before-and-after screenshots with the added and removed text highlighted, and says it uses AI to tell you whether a change is important. Watchmint has no AI summary; it gives you the exact lines and leaves the judgment to you (or your agent).
When Distill is the better choice
Distill runs as an extension for Chrome, Firefox and Opera, and its free tier includes local monitors that check from your own browser. That's handy for pages behind your own login. Watchmint checks from its servers and only reads public pages.
When changedetection.io is the better choice
changedetection.io is open source, and its hosted service watches pages for you in the cloud. If you want to read or change the code that watches your pages, it's the one to look at. It also sends notifications to many more services directly; Watchmint sends one signed webhook format for you to route.
When Watchmint fits
- You're writing code. One
POST /v1/monitors/createstarts a monitor;monitor.changedarrives with the added and removed lines, a unified diff and, for visual checks, image links. There's no dashboard step you have to click through. - An AI agent does the watching. Every operation is an MCP tool
(
watch_page,get_changes,compare_page…), so an assistant can watch a page and read what changed without re-reading it. - You want one price per check. A check costs one credit, text or visual, and a check that can't read the page costs nothing.
- You don't want to store snapshots yourself.
compare_pageanddiff_textalso work without a monitor, if you'd rather keep the old copy.