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Step 1
Select Your Goal
What should this monitor watch for? We'll set up the right detection, filters, and alerts that you can customize later.
Privacy-first · Runs 100% locally · No accounts
BRAND & COMPLIANCE
Catch design drift before customers do.
Visual, layout, and text monitoring for agencies managing client sites, franchises tracking regional pages, and legal teams ensuring required disclaimers stay in place.
Websites change constantly, and most of those changes happen without a formal approval process. A developer pushes a CSS fix that shifts the logo. A CMS editor updates a headline and deletes the required legal disclaimer below it. A third-party widget updates its embed code overnight, reshuffling your homepage. None of these changes trigger a review. The first person who notices is often a customer.
For agencies managing ten, twenty, or fifty client sites, the exposure compounds. Each site is a separate environment with its own editors, integrations, and release cadence. Manual spot checks are not repeatable, not comprehensive, and not fast enough. You are always reviewing what already happened, not what is happening now.
"The first person who notices an off-brand homepage should not be a customer."
PageSignal watches every approved page on every site you manage and tells you the moment something deviates. Set a baseline, walk away, and act only when an alert fires.
Visual detection with pinned baselines.
Pixel-level comparison catches the subtle drift manual review misses — a shifted button, a font-weight change, a color one step off-brand. The pinned baseline is the approved reference; future drift is always measured against it, not against yesterday's state. Rebaseline when an intentional update deploys; keep history for audit or clear for a fresh start.
- Four review modes: side-by-side, overlay, diff-only, grid
- Configurable drift threshold per monitor
- Pinned baselines protected against accidental update
Layout detection for structural integrity.
Visual changes are often the visible result of structural changes underneath. A missing navigation item, a footer section that disappeared after a template update, a sidebar shifted after CMS migration. Layout detection works at the DOM level — tracks presence, position, and order of structural elements — and catches structural changes even on pages with dynamic content that visual diff would mark as noise.
Text detection for content accuracy.
Unauthorized text changes are the most common — and most consequential — form of brand deviation. A CMS editor corrects a typo and changes a legal-approved product claim. Required disclaimers disappear from a page. Phrase match rules with direction set to "disappears" alert when required text is absent, not when it is present as expected. Regex mode catches patterns like copyright years across regional variants.
- Up to 24 text match rules per monitor
- Direction: appears · disappears · either
- Contains, exact, and regex matching
Multi-site, multi-brand organization.
Profiles group monitors by client or by region — switch profiles to focus on one client at a time without changing settings. Labels add a cross-cutting layer: tag by page type (homepage, product, checkout, legal) and filter the dashboard to see all legal pages across every client at once. The change log gives compliance teams an auditable trail of every detected change.
USE CASES Built for
Built for
agencies and franchises.
Agency client homepages
Visual diff catches design changes, layout detection catches structural changes, text rules catch unauthorized copy edits — without manual spot checks.
Franchise regional sites
Monitor every region's pages from a single dashboard. Baseline against the corporate template. Get alerted when a regional team deviates from brand standard.
Staging vs. production
Side-by-side monitors for staging and production URLs. After every deploy, visual diff confirms what went live matches what was approved.
Legal disclaimers
Phrase match rules with direction "disappears" fire only when required text is absent. Cover every compliance-sensitive page with a monitor that runs independently of deployment notifications.
CSS regression detection
Pin the baseline after design sign-off. After each deploy, visual diff runs automatically and flags pixel-level regressions. The annotated diff shows exactly which elements changed.
Promo banner integrity
Monitor campaign landing pages during active promotions. Visual diff and text diff together catch both banner image changes and copy changes — alert on any deviation from approved creative.
Terms & privacy monitoring
Track legal pages for any content modification. Text diff provides a full record of every word change. The change log creates an audit trail for regulatory inquiries and legal discovery.
Product page accuracy
Watch brand-owned product pages for description, pricing, and feature claim drift. Regex rules verify required certification language remains present.
Features Everything you need to
Everything you need to
track the web
Six detection modes
Text, layout, visual diffs, price/number tracking, SEO signals, and AI-evaluated changes. Run one alone or combine them with AND/OR gating on the same monitor.
Visual Text Layout Price SEO AI
Point-and-Click
Select any element on a page to monitor just that — a price, button, paragraph, anything.
Briefs
Get a daily brief of what matters most across the pages you watch.
Smart Noise Filtering
Strips ads, timestamps, and carousels. Only real changes reach you.
Real Browser Captures
Checks pages in a real browser so JavaScript, sessions, and dynamic content render correctly.
Conditional Logic Gates
Set rules like "notify me only if price drops below $50" or "alert when 'Sold Out' disappears."
IF price < $50.00
THEN Notify → Desktop + Telegram
BYOK AI
OpenAI, Anthropic, Google Gemini, or local Ollama. Your key, your model, your route — plain-English summaries of every change.
Login-Protected Sites
Reuses your active browser session to monitor pages behind authentication.
Anti-Bot Mode
Human-like rendering with jitter bypasses Cloudflare and bot detection.
NOTIFICATIONS Delivered to
Delivered to
the right person.
Email for critical pages · Webhook into project management or ticketing · Telegram for on-call brand managers.
Email
Monday · 09:00 Subject
Weekly digest · 14 changes across 8 monitors
Webhook
POST · 200 OK { "event": "change.detected", "monitor": "..." }
Telegram
@pagesignal_bot · 14:43 🔔 Change detected — tap to review the diff
Desktop
2 min ago Page changed on amazon.com · -$120
How It Works Set it up in seconds
Set it up in seconds
in 60 seconds.
No accounts, no cloud, no complicated setup.
2
Step 2
Choose what to track
Pick one of six detection modes — or combine them with AND/OR gating on a single monitor.
3
Step 3
Set your rules
Schedule (60s–24h), text match rules, price thresholds, AI focus instructions, noise filters.
4
Step 4
Get notified
Desktop, email, Telegram, or webhook — immediate, grouped, or digest.
Privacy-First What makes us
What makes us
different.
No accounts. No cloud. No tracking. Everything stays on your device.
100% Local
Nothing touches a remote server.
No Account
No sign-ups or personal info.
Zero Telemetry
No analytics, no phone-home.
Full Export / Migration / Backups
YML and ZIP backups, anytime.
PageSignal
Cloud monitors
Browser extensions
Runs locally
Yes
No
Sometimes
Cloud account
No
Yes
Sometimes
Local backup
Yes
No
Limited
Real browser capture
Yes
Sometimes
Limited
Login-protected pages
Yes
Limited
Limited
AI summaries
Optional
Sometimes
Limited
Runs locally
PageSignal Yes
Cloud monitors No
Browser extensions Sometimes
Cloud account
PageSignal No
Cloud monitors Yes
Browser extensions Sometimes
Local backup
PageSignal Yes
Cloud monitors No
Browser extensions Limited
Real browser capture
PageSignal Yes
Cloud monitors Sometimes
Browser extensions Limited
Login-protected pages
PageSignal Yes
Cloud monitors Limited
Browser extensions Limited
AI summaries
PageSignal Optional
Cloud monitors Sometimes
Browser extensions Limited
FAQ Brand & compliance
Brand & compliance
questions.
Can I monitor multiple client sites separately?
Yes. Profiles group monitors by client. Each profile has its own scoped dashboard view, its own pause behavior, and its own labels. Switching profiles gives you a focused view without changing any monitor settings.
How does the pinned baseline work for rebrands?
When an approved redesign deploys, you rebaseline the monitor — two options: keep the previous snapshot history for audit purposes, or clear it and start fresh. The new approved state becomes the reference point. Future drift is measured from there.
Can I get alerted when a required disclaimer is removed?
Yes. Add a phrase match rule for the required text with direction set to "disappears." The alert fires only when the phrase is absent. Up to 24 rules per monitor — enough for required copyright, regulatory copy, and multiple jurisdictional disclaimers on a single page.
Does the change log work as a compliance audit trail?
Yes. Every detected change is timestamped with before-and-after snapshots. The change log surfaces every change across every monitored page, exportable as needed. For compliance documentation and regulatory inquiries.
Where is client monitoring data stored?
On your machine. Monitored URLs, baselines, change history, snapshots, and configured rules live in a local SQLite database. PageSignal does not upload them. Agencies handling regulated industries can keep client monitoring private without disclosing to a cloud monitoring vendor.
Ready to catch drift before customers do?
Stop discovering changes after the fact.
Download macOS · Windows · v3.2