Competitor pricing
Enterprise plan added an annual-only discount and changed seat minimums.
Privacy-first · Runs 100% locally · No accounts
Private Website Change Monitoring for Your Desktop
Track text, visuals, prices, SEO tags, layouts, and AI-detected changes. Get alerts by email, Telegram, or webhooks. No cloud account.
- 6 detection modes
- Real browser captures
- AI-optional
Available on Windows 10, 11 · macOS 10.13 and above
Price dropped to $899!
amazon.com · just now
3 changes today
Amazon · PS5 · -$120 GitHub · React v19 released NYT · headline changed Target · back in stock FDA · new bulletin LinkedIn · 12 new jobs Etsy · price drop SEC · 10-K filed Amazon · PS5 · -$120 GitHub · React v19 released NYT · headline changed Target · back in stock FDA · new bulletin LinkedIn · 12 new jobs Etsy · price drop SEC · 10-K filed
CHANGE DETECTION AND ALERT Watch a page
Watch a page
change.
PageSignal watches web pages for changes and alerts you the moment something updates — by desktop notification, email, Telegram message, or webhook. Core monitoring runs on your computer, so PageSignal does not store your monitored URLs, snapshots, or alert history in a hosted cloud account.
Before
10:42
After
10:43
Visual change
PRICE MONITORING Never miss a
Never miss a
price drop.
Track prices and numbers on any page, set threshold rules, and get alerts when a value drops, rises, crosses a target, or disappears.
Price dropped to $899!
amazon.com · just now
CHANGED $899.00 $1,199.00
Change Log
Price Change
$1,199 → $899 (25% off)
2m ago
New Content
"Limited time" banner
2m ago
Visual Change
3 new product photos
1h ago
3 changes today
Delivered instantly via
Desktop
2 min ago Price dropped on Amazon · -$120
Telegram
@pagesignal_bot · 14:43 🔔 PS5 Spider-Man — $779 (was $899)
Email
Daily digest · 09:00 Subject
Price dropped on amazon.com — review the diff
Webhook
POST · 200 OK { "event": "price.dropped", "delta": -120 }
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.
Briefs
Turn many monitors into one brief
Get a daily brief of what matters most to you. Track a group of pages together, filter for the changes you care about, and receive one AI-assisted summary on the schedule you choose.
Competitive Intel SEO Digest Price Watch Simple Changes News Brief Client Report Custom
Daily brief
Daily brief of what matters most
enterprise pricing product launches new integrations ignore boilerplate
Product launch page
New AI reporting template announced with webhook delivery support.
Industry newsroom
Two relevant market updates matched your saved brief topics.
12 monitors
5 sources
1 brief
One brief across many monitors
Group competitor pages, pricing portals, news sources, or client pages into one scheduled brief and receive a consolidated readout instead of scattered alerts.
AI summarizes what matters
Choose compact, standard, or detailed summaries. Templates shape each brief, while Simple Changes keeps a raw no-AI stream when you want every change.
Tell PageSignal what to watch
Describe what you care about in plain English, then refine it with Topics, Always tell me, and Ignore chips before anything reaches your inbox.
Use Cases Built for how you browse
Built for how you browse
every watcher.
Use Cases
Price & Deal Tracking
Monitor prices, coupons, and flash sales automatically.
Restock Alerts
News & Content
Competitor Intel
Job & Listings
Regulatory
INDUSTRIES Made for your
Made for your
work.
Pick the page that matches your job. Same product, focused for what you actually do.
Prices, stock, deals — caught in minutes.
Monitor any marketplace, supplier portal, or competitor product page.
Read moreWatch every move your rivals make.
Pricing, features, messaging, careers — tracked across every competitor page.
Read moreCatch design drift before customers do.
Visual, layout, and text monitors for agencies and franchise teams.
Read moreWeb monitoring from your terminal.
CLI, MCP server, YAML config, BYOK AI.
Read moreDetect SEO breaks the moment they ship.
9 signal groups, 4 severity levels, keyword tracking on every page.
Read moreStop refreshing the page.
Real estate, job listings, news, regulations — watched while you sleep.
Read more6
Detection modes
4
Alert channels
7
Brief templates
100%
Local · No telemetry
Works on bot-protected sites
AmazoneBayTargetWalmartGitHubLinkedInNYTBBCFDASECEtsyRedditAmazoneBayTargetWalmartGitHubLinkedInNYTBBCFDASECEtsyReddit
How It Works Set it up in seconds
Set it up in seconds
in 60 seconds.
No accounts, no cloud, no complicated setup.
1
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.
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.
All Features
Under the hood
CLI workflow
Full terminal interface for monitors, alerts, snapshots, and batch runs. Table or JSON output.
MCP server
30+ tools and 10 resource templates. Presets for Claude Desktop, Claude Code, ChatGPT, Codex.
Conditional logic
Up to 24 text rules per monitor. Delta + absolute thresholds. AND/OR gating across modes.
YAML config
Export & import your monitor library. Version-control your setup across machines.
Smart scheduling
60s–24h intervals, jitter, exact-time runs, active date windows.
Omnichannel alerts
Desktop, email, Telegram, and webhook — with immediate, grouped, or digest delivery.
Webhooks
POST to Telegram, Zapier, Make, or any HTTP endpoint with structured payloads.
Profiles & labels
Group monitors by client or context. Filter the dashboard by label or status.
Snapshots & baselines
Pin an approved baseline. Rebaseline with audit trail. Drift threshold per monitor.
Annotated diffs
Text, layout, SEO, and pixel-diff views — annotated and structured.
Change timeline
Compare any two snapshots in history. Side-by-side, overlay, slider, or grid.
Local backup
ZIP archive backup. Two-phase restore. Profile deduplication on import.
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 Common
Common
questions.
What does PageSignal do?
PageSignal is a desktop app that watches web pages and tells you the moment something changes — by desktop notification, email, Telegram, or webhook. You paste a URL, choose what to watch for, and set a schedule. The app runs on your computer; there is no PageSignal cloud account.
How is it different from cloud monitoring services?
PageSignal runs locally. Your monitor library, snapshots, and change history live in a local SQLite database — PageSignal does not upload them. There is no per-monitor billing tier, no account requirement, and no central database that exposes who you watch.
How many detection modes are there?
Six. Text changes, layout/DOM structure, visual screenshot diffs, price/number tracking with thresholds, SEO signal changes (across 9 groups and 4 severity levels), and AI-evaluated changes with natural-language summaries. Modes can run alone or be combined with AND/OR gating on a single monitor.
Can I monitor pages behind a login?
Yes. A built-in sign-in window lets you authenticate once with your normal credentials — SSO, OAuth, and multi-step flows all work because PageSignal uses a real browser engine. The browser session is saved and reused on every check.
Does it work on sites with bot protection?
PageSignal uses a real browser engine — Chromium on Windows, WebKit on macOS — not a headless simulation. JavaScript executes completely, the TLS / JA3 fingerprint matches a regular browser, and Cloudflare challenge pages are detected explicitly rather than silently treated as the real page.
How does the AI work and what data leaves my machine?
AI features are optional. You bring your own API key — OpenAI, Anthropic, Google Gemini — or run a local Ollama model. Only the page-change content you route through AI is sent to the provider you choose. URL redaction strips sensitive paths from prompts before they leave the machine, and every outbound AI call is logged locally for audit.
How do I get notified?
Four channels — desktop notifications, email (Gmail, Outlook, Yahoo, or any custom SMTP), Telegram (with inbound bot commands), and webhooks (POST to Telegram, Zapier, or any HTTP endpoint). Three delivery modes — immediate, grouped (5m / 15m / 30m / 1h), or digest (daily / 3-day / 5-day / weekly).
Is there a CLI or API for developers?
Yes. `pagesignal-cli` is a full terminal interface with table or JSON output, plus a built-in MCP server (`pagesignal serve`) exposing 30+ tools and 10 resource templates to any MCP-compatible AI client — Claude Desktop, Claude Code, ChatGPT, Codex, Gemini CLI, OpenCode.
Ready when you are
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Download Available on Windows 10, 11 · macOS 10.13 and above