CheckSite vs Distill.io: Website Monitoring Compared

CheckSite vs Distill.io: A Practical Comparison

Distill.io has built a large following, particularly through its popular Chrome extension that lets you monitor web pages directly from your browser. CheckSite takes a cloud-first approach with intelligent analysis at its core. Both tools detect website changes, but they take fundamentally different paths to get there.

This comparison breaks down the meaningful differences so you can pick the right tool for your use case.

Architecture: Browser-Based vs Cloud-First

Distill.io

Distill.io offers two monitoring modes: local (browser-based) and cloud (server-based). The local mode runs checks through the browser extension, which means monitoring only happens when your browser is open and the computer is running. Cloud monitoring runs on Distill’s servers independently of your browser.

The local mode is free, which is a big part of Distill’s appeal. But it comes with a fundamental limitation: if your laptop is closed or your browser is off, no checks run. Cloud monitoring requires a paid plan.

CheckSite

CheckSite runs all monitoring in the cloud. Every check happens on CheckSite’s servers using a headless browser, regardless of whether your computer is on or your browser is open. Even the free tier runs in the cloud.

Key difference: Distill.io’s free tier requires your browser to be open. CheckSite’s free tier runs 24/7 in the cloud.

Change Detection Approach

Distill.io

Distill.io monitors selected page elements by watching the DOM (Document Object Model) for text or HTML changes. You select specific elements on the page using CSS selectors, and Distill alerts you when the content of those elements changes. This is precise and effective for structured content like prices, stock status, or specific text blocks.

The downside is that dynamic content, scripts, and minor HTML restructuring can trigger false alerts. Distill offers conditions and filters to help, but configuring them requires some technical knowledge.

CheckSite

CheckSite loads the full page with a headless browser, then intelligently analyzes the content to determine what changed. Rather than comparing raw HTML or DOM elements, CheckSite interprets the page like a human reader would.

You can also give CheckSite natural language instructions. For example: “Alert me only when new job postings appear” or “Ignore changes to the sidebar.” CheckSite uses these prompts to decide which changes are worth reporting.

Key difference: Distill.io watches specific DOM elements for raw changes. CheckSite intelligently determines whether changes are meaningful.

Feature Comparison

Pricing Comparison

Distill.io pricing

Distill.io’s free tier is generous for local monitoring: 25 monitors with checks as frequent as every 5 minutes, as long as your browser is running. Cloud monitoring starts at around $15/month for the Starter plan (with limited cloud checks). Higher tiers unlock more cloud checks, faster frequencies, and additional features. The pricing scales based on the number of cloud checks you need.

CheckSite pricing

CheckSite offers a free tier with 3 cloud monitors running daily checks with email notifications. The Pro plan at $9.99/month gives you 20 monitors, hourly checks, smart summaries that explain what changed and why it matters, and all notification channels.

Key tradeoff: Distill.io gives you more free monitors but only locally. CheckSite gives you fewer free monitors but they run in the cloud 24/7. For paid plans, CheckSite’s flat rate covers 20 monitors with smart summaries included.

Browser Extension Comparison

Both tools offer browser extensions, but they serve different purposes.

Distill.io’s extension is central to the product. It’s the primary interface for setting up and managing local monitors. You select elements directly on the page, configure check intervals, and view changes — all from the extension. It has a large Chrome Web Store user base and is well-maintained.

CheckSite’s extension is focused on visual region selection. You use it to highlight the specific area of a page you want to monitor, then the monitor is created in the web app. Day-to-day management happens in CheckSite’s dashboard, not the extension.

If you prefer managing everything from your browser toolbar, Distill.io’s extension-first approach might feel more natural. If you prefer a dedicated web dashboard for managing monitors, CheckSite’s approach may be a better fit.

Technical Users vs Non-Technical Users

Distill.io rewards technical users. Setting up effective monitors often involves understanding CSS selectors, configuring conditions (like “alert only if this element contains a number less than X”), and managing the nuances of DOM monitoring. For developers and technically inclined users, this level of control is powerful.

CheckSite is designed to be accessible to anyone. Instead of writing CSS selectors, you tell CheckSite what you care about in plain English. Instead of configuring conditions with operators and thresholds, you write something like “notify me when the price drops below $200.” CheckSite handles the interpretation.

This doesn’t mean CheckSite lacks depth — the natural language prompts can express sophisticated monitoring rules. It just means the learning curve is lower for non-technical users.

Reliability and Always-On Monitoring

This is a critical distinction. With Distill.io’s free local monitoring:

• Your computer must be powered on
• Your browser must be running
• The extension must be active
• Network interruptions on your end mean missed checks

With CheckSite (even the free tier):

• Checks run on cloud servers 24/7
• No dependency on your local machine
• Consistent uptime regardless of your personal device status

If you’re monitoring anything where missing a change has real consequences — a price drop, a regulatory update, a competitor move — cloud-based monitoring is significantly more reliable.

Who Should Choose Distill.io?

Distill.io is a good choice if:

• You want free monitoring and are fine keeping your browser open for it to work
• You need very high-frequency local checks (every few seconds) for time-sensitive content
• You’re technically comfortable with CSS selectors and condition-based filtering
• You want a mobile app for checking changes on the go
• You need SMS notifications
• You prefer managing monitors from the browser extension rather than a web dashboard

Who Should Choose CheckSite?

CheckSite is the better fit if:

• You need reliable cloud monitoring that runs whether your computer is on or not
• You want smart filtering so you only get alerts about meaningful changes
• You prefer natural language rules over CSS selectors and technical conditions
• You want smart summaries that explain what changed in plain language
• You’re monitoring many pages and want up to 20 monitors at a flat rate
• You need webhook integrations for custom automation workflows

The Bottom Line

Distill.io is a powerful tool with a strong free tier for technically inclined users who don’t mind keeping their browser open. Its DOM-level monitoring gives you precise control over exactly what you’re watching.

CheckSite trades some of that granular control for intelligence. The intelligent approach means less manual configuration, fewer false positives, and change summaries that save you time reviewing what actually happened on a page.

If you’re currently using Distill.io’s local monitoring and want the reliability of cloud-based checks with smarter detection, try CheckSite’s free tier to see the difference.

You can also read how CheckSite compares to Visualping, or explore use cases to see how others are using automated website monitoring.