Website Change Detection, Monitoring and Alerts.

Know the moment anything changes on the web.

Paste a URL and SiteGauge takes a full snapshot, monitors it around the clock (reaching many pages behind Cloudflare and Akamai that block ordinary monitors), and alerts you as soon as a check confirms a meaningful change. AI tells you what happened and why it matters.

Monitor any page: your site, competitors, suppliers
AI summaries, not just diffs
Visual before/after screenshots
Slack, email & webhook alerts
Get started free No credit card · 5 free monitors

Enter a URL above to get started

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No credit card · 5 URLs free · cancel anytime

See SiteGauge in action

Watch how a single URL turns into round-the-clock website change monitoring, screenshots, and AI alerts.

See exactly what changed

Every significant change comes with a side-by-side screenshot comparison and a plain-English AI summary. No more guessing. Know the moment a competitor updates their pricing with competitor monitoring built in.

BEFORE · Jun 12AFTER · Jun 19
acme.com/pricing
Simple, transparent pricing
No hidden fees. Cancel anytime.
Starter
$0/mo
5 monitors
Daily checks
Email alerts
PRICE CHANGED
Pro
$79/mo
$49/mo
50 monitors
Hourly checks
Slack + email
Enterprise
Custom
Unlimited
Real-time
SLA + support
acme.com/pricing
Simple, transparent pricing
No hidden fees. Cancel anytime.
Starter
$0/mo
5 monitors
Daily checks
Email alerts
Pro
$49/mo
50 monitors
Hourly checks
Slack + email
Enterprise
Custom
Unlimited
Real-time
SLA + support
BEFORE
AFTER
🔴 HIGHPricing change detected
💡 Pro plan raised from $49 → $79/mo

← drag to compare →

Intelligence at every layer.

Not just alerts. Context, interpretation, and historical intelligence so you always know what changed, why it matters, and what to do next. AI analysis is included on every plan, starting with the free one.

Get started free
Visual before/after
Drag-slider screenshot comparison. See precisely what a page looked like at the moment of change.
AI interpretation
AI reads every meaningful change and writes what it means in plain English. Not just a raw diff of what moved.
Pricing detection
Automatically extracts and tracks pricing plan changes, new tiers, and discount copy on any site.
4 tracking modes
Monitor a single page, a section of a page, a full sitemap, or pages behind a login.
Smart alerts
Email, Slack, or webhook. Filter by severity so you skip the routine and hear the signal. Never paged for a cookie banner update.
Competitor tracking
Watch competitor pricing, features, and messaging. Log deal outcomes and spot patterns over time.
AI agents (MCP)
Let Claude, Cursor, or any MCP client create monitors and read change history for you, conversationally.

From URL to intelligence in seconds.

Start for free
01
Add a monitor
Paste any URL: a competitor, your own site, a supplier, or a regulatory page. Choose page, sitemap, domain, or keyword.
02
We watch continuously
Our 4-stage pipeline runs a lightweight check first. Screenshots and AI only fire when a real change is confirmed, so routine edits do not page you. See how that holds up in our tool comparisons.
03
Get clear insights
AI explains what changed, how significant it is, and what action to consider. In plain English, every time.

Assess changes easily.

Understand updates fast with a before-and-after screenshot comparison. Drag the slider to see exactly what changed between any two snapshots.

Visual changes
Compare the current and prior screenshot

Scroll to see more

acmesaas.com/pricing
AcmeSaaS
ProductPricingDocsBlog
Get started
Simple pricing
Plans for every team
No hidden fees. Cancel anytime.
STARTER
$19/mo
Up to 3 seats
5 monitors
Daily checks
Email alerts
PRO
$49/mo
Up to 10 seats
50 monitors
Hourly checks
Slack + email
AI summaries
ENTERPRISE
Custom
Unlimited seats
Custom monitors
Real-time checks
All channels
Dedicated CSM
acmesaas.com/pricing
AcmeSaaS
ProductPricingDocsBlog
Get started
Simple pricing
Plans for every team
🎉 New annual plans. Save up to 40%
STARTER
$19/mo
Up to 3 seats
5 monitors
Daily checks
Email alerts
MOST POPULAR
PRO
$49$69/mo
Up to 15 seats
Unlimited monitors
Hourly checks
Slack + email
AI summaries + battlecards
ENTERPRISE
Custom
Unlimited seats
Custom monitors
Real-time checks
All channels
Dedicated CSM
Current
Previous
acmesaas.com/sitemap
+0 new pages
1 changed
URLStatusDetected
/
OK
-
/pricing
CHANGED
just now
/features
OK
-
/about
OK
-
/blog
OK
-
/docs
OK
-
/docs/quickstart
OK
-

Every team has a reason
to watch the web.

Competitive Intelligence

Know every move your competitors make

Monitor pricing pages, feature announcements, and positioning copy across all your rivals. Get AI-written summaries the moment anything shifts - so you can respond before the market does.

Product & Strategy teams

SEO Monitoring

Catch ranking-killer changes before they hurt you

Track title tags, meta descriptions, canonicals, and heading structure on your own pages and competitors'. Spot keyword pivots and content rewrites that signal a shift in SEO strategy.

SEO & Content teams

Regulatory & Compliance

Never miss a policy or regulatory update

Automatically watch government portals, industry regulators, and compliance bodies. The moment a policy page changes, the right team member gets notified - no manual checking required.

Legal & Risk teams

Sales Intelligence

Reach out at exactly the right moment

Monitor target accounts for website changes that signal buying intent - new leadership pages, product pivots, funding announcements, hiring surges. Turn page changes into pipeline.

Sales & GTM teams

Brand & Reputation

Protect your brand across the web

Watch review sites, news pages, partner directories, and third-party profiles for brand mentions or changes. Know when your name appears somewhere it shouldn't - or disappears where it should.

Marketing & Comms teams

Security & Defacement

Detect unauthorised changes to your site instantly

Get alerted the second unexpected content appears on your web properties - defacements, injected scripts, phishing redirects. SiteGauge's visual diff catches what server logs miss.

Security & DevOps teams

E-commerce & Retail

Stay ahead of competitor pricing and promotions

Track pricing pages, product listings, and promotional banners across any online store. See before-and-after screenshots of price changes with AI explanations - no scraping code needed.

E-commerce & Retail teams

Agency & Client Work

Monitor every client site from one place

Add competitor pages, client sites, and supplier portals to a single dashboard. Send branded alert digests to clients automatically - a tangible deliverable that justifies your retainer.

Digital Agencies

Content & Publishing

Track what competitors are publishing - and when

Monitor competitor blogs, resource hubs, and documentation for new content. Spot trending topics early, identify content gaps, and get notified when a rival publishes something that competes with you.

Content & Editorial teams

Engineering & DevOps

Know when third-party services change without warning

Watch API documentation, status pages, dependency release notes, and vendor announcements. Stop being blindsided by breaking changes buried in an update you didn't know had shipped.

Engineering teams

Competitive Intelligence

Know every move your competitors make

Monitor pricing pages, feature announcements, and positioning copy across all your rivals. Get AI-written summaries the moment anything shifts - so you can respond before the market does.

Product & Strategy teams

SEO Monitoring

Catch ranking-killer changes before they hurt you

Track title tags, meta descriptions, canonicals, and heading structure on your own pages and competitors'. Spot keyword pivots and content rewrites that signal a shift in SEO strategy.

SEO & Content teams

Regulatory & Compliance

Never miss a policy or regulatory update

Automatically watch government portals, industry regulators, and compliance bodies. The moment a policy page changes, the right team member gets notified - no manual checking required.

Legal & Risk teams

Sales Intelligence

Reach out at exactly the right moment

Monitor target accounts for website changes that signal buying intent - new leadership pages, product pivots, funding announcements, hiring surges. Turn page changes into pipeline.

Sales & GTM teams

Brand & Reputation

Protect your brand across the web

Watch review sites, news pages, partner directories, and third-party profiles for brand mentions or changes. Know when your name appears somewhere it shouldn't - or disappears where it should.

Marketing & Comms teams

Security & Defacement

Detect unauthorised changes to your site instantly

Get alerted the second unexpected content appears on your web properties - defacements, injected scripts, phishing redirects. SiteGauge's visual diff catches what server logs miss.

Security & DevOps teams

E-commerce & Retail

Stay ahead of competitor pricing and promotions

Track pricing pages, product listings, and promotional banners across any online store. See before-and-after screenshots of price changes with AI explanations - no scraping code needed.

E-commerce & Retail teams

Agency & Client Work

Monitor every client site from one place

Add competitor pages, client sites, and supplier portals to a single dashboard. Send branded alert digests to clients automatically - a tangible deliverable that justifies your retainer.

Digital Agencies

Content & Publishing

Track what competitors are publishing - and when

Monitor competitor blogs, resource hubs, and documentation for new content. Spot trending topics early, identify content gaps, and get notified when a rival publishes something that competes with you.

Content & Editorial teams

Engineering & DevOps

Know when third-party services change without warning

Watch API documentation, status pages, dependency release notes, and vendor announcements. Stop being blindsided by breaking changes buried in an update you didn't know had shipped.

Engineering teams

Competitive Intelligence

Know every move your competitors make

Monitor pricing pages, feature announcements, and positioning copy across all your rivals. Get AI-written summaries the moment anything shifts - so you can respond before the market does.

Product & Strategy teams

SEO Monitoring

Catch ranking-killer changes before they hurt you

Track title tags, meta descriptions, canonicals, and heading structure on your own pages and competitors'. Spot keyword pivots and content rewrites that signal a shift in SEO strategy.

SEO & Content teams

Regulatory & Compliance

Never miss a policy or regulatory update

Automatically watch government portals, industry regulators, and compliance bodies. The moment a policy page changes, the right team member gets notified - no manual checking required.

Legal & Risk teams

Sales Intelligence

Reach out at exactly the right moment

Monitor target accounts for website changes that signal buying intent - new leadership pages, product pivots, funding announcements, hiring surges. Turn page changes into pipeline.

Sales & GTM teams

Brand & Reputation

Protect your brand across the web

Watch review sites, news pages, partner directories, and third-party profiles for brand mentions or changes. Know when your name appears somewhere it shouldn't - or disappears where it should.

Marketing & Comms teams

Security & Defacement

Detect unauthorised changes to your site instantly

Get alerted the second unexpected content appears on your web properties - defacements, injected scripts, phishing redirects. SiteGauge's visual diff catches what server logs miss.

Security & DevOps teams

E-commerce & Retail

Stay ahead of competitor pricing and promotions

Track pricing pages, product listings, and promotional banners across any online store. See before-and-after screenshots of price changes with AI explanations - no scraping code needed.

E-commerce & Retail teams

Agency & Client Work

Monitor every client site from one place

Add competitor pages, client sites, and supplier portals to a single dashboard. Send branded alert digests to clients automatically - a tangible deliverable that justifies your retainer.

Digital Agencies

Content & Publishing

Track what competitors are publishing - and when

Monitor competitor blogs, resource hubs, and documentation for new content. Spot trending topics early, identify content gaps, and get notified when a rival publishes something that competes with you.

Content & Editorial teams

Engineering & DevOps

Know when third-party services change without warning

Watch API documentation, status pages, dependency release notes, and vendor announcements. Stop being blindsided by breaking changes buried in an update you didn't know had shipped.

Engineering teams

Questions we get asked.

Any URL. Any change. Always on.

Paste a URL above, or sign up to start monitoring in under 30 seconds. Prefer a quick one-off check first? Try our free website tools.

Get started free