DiffSpot — Web Page Change Monitor

DiffSpot monitors web pages for changes and notifies you instantly — all running locally in your browser. WHAT IT DOES • Track any web page for text changes — prices, stock status, news, job postings, and more • Visual element picker — click on the exact part of a page you want to monitor • Smart diff detection — see exactly what changed with highlighted additions and deletions • Keyword filters — only get notified when specific words appear or disappear • Exclude noisy sections — ignore ads, timestamps, and dynamic content WHY DIFFSPOT? Unlike other page monitors, DiffSpot's free plan runs entirely in your browser using Chrome's Offscreen API — no tabs opening in the background. • Zero tab pollution — pages are fetched silently without opening tabs • Free plan is 100% local — your data stays in your browser, no sign-up needed • Clean diff view — see additions (green) and deletions (red) at a glance • Upgrade anytime for cloud-based monitoring with email, Slack, Discord & more FREE PLAN • Up to 10 monitored pages • 12-hour check intervals • Browser notifications • 5 change records per page • No sign-up required PRO PLAN — $8/month • Up to 50 monitored pages • Check intervals down to 5 seconds • Cloud-based monitoring (works even when browser is closed) • Email, Slack, Discord, Webhook, LINE notifications • 30 change records per page BUSINESS PLAN — $15/month • Up to 200 monitored pages • All Pro features included • 100 change records per page • Priority support PERFECT FOR • Price tracking — know when products drop in price • Stock monitoring — get alerted when sold-out items return • Job boards — never miss a new posting • News & research — track updates on topics you follow • Competitor monitoring — watch for changes on competitor pages Get started in 3 clicks: Install → Enter URL → Start Monitoring.