Monitor any webpage for changes. Get notified the moment a price drops, a job listing updates, or content changes.
Users
14
−6 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
2
0 in 30 days
Store rank
#175K
#146K among extensions
Version
1.0.0
updated 10 Mar 2026
Users
monthly, 7 months
Latest, 21 Oct 2026:14 usersMove the mouse over the chart for any month
Ratings count
monthly, 7 months
Latest, 21 Oct 2026:2 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About PageDiff — Website Change Tracker
👁 PAGEDIFF — KNOW THE MOMENT ANYTHING CHANGES
PageDiff monitors any webpage automatically in the background and sends you a Chrome notification the moment something changes. No more obsessively refreshing pages. No more missing a sale, a job posting, or a product back in stock.
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🆓 FREE — ALWAYS FREE
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✔ Monitor up to 3 pages simultaneously
✔ Automatic daily background checks — no manual refreshing
✔ Instant Chrome notification when a change is detected
✔ Change percentage shown at a glance on every card
✔ Quick check button — manually trigger a check anytime
✔ Pause and resume monitoring per page
✔ Snapshot preview — see the current captured content
✔ Keyboard shortcut: Ctrl+Shift+K
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⚡ PRO — $9.99 LIFETIME (via Gumroad)
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Everything in Free, plus:
✔ Unlimited pages monitored simultaneously
✔ Custom check frequency per page: Hourly, 6h, 12h, Daily, or Weekly
✔ Keyword alerts — only notify when specific words appear in new content (e.g. "in stock", "hiring", "available", "sale")
✔ Change sensitivity slider — set a minimum % threshold to ignore minor tweaks like cookie banners
✔ Private notes per page — attach your own reminders to each tracked page, auto-saved
✔ Full change history — 20 timestamped entries per page with change summaries
✔ Badge counter — extension icon shows number of unread changes
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REAL USE CASES
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🛍️ Shoppers
→ Waiting for a sold-out sneaker, console, or gadget? Get notified the second it's back in stock
→ Track a product price and catch the drop before the sale ends
→ Monitor a flight or hotel page for price changes
💼 Job Hunters
→ Watch a company's careers page — get alerted the moment new positions are posted
→ Monitor freelance platforms for new projects in your niche
→ Track multiple company job boards simultaneously
📈 Business & Competitive Research
→ Watch competitor pricing pages for any updates
→ Get notified when a competitor announces something new on their homepage
→ Monitor supplier pages for stock or price changes
📋 Practical & Research Use
→ Watch government or visa pages for policy or deadline updates
→ Monitor rental listings for price drops
→ Track university admissions pages for important changes
→ Follow court case dockets or legal document pages
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HOW IT WORKS
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1. Click the PageDiff icon to open the side panel
2. Click "+ Watch a Page" and enter any URL
3. PageDiff takes a snapshot of the page content immediately
4. Chrome checks it automatically on your chosen schedule
5. You receive a notification the moment anything changes
6. Open PageDiff to see what changed, the percentage, and the full history
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IMPORTANT NOTE
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PageDiff monitors publicly accessible pages only. Pages behind logins, paywalls, or CAPTCHA verification cannot be monitored.
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SETUP
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Click the PageDiff icon in your Chrome toolbar to open the side panel. To activate Pro: purchase at legendarycreation.gumroad.com/l/pagediff, then enter your license key in PageDiff Settings.
Built by Legendary Creation.