Website Uptime Checker
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Add one URL at a time or use Bulk Add to paste multiple URLs and check them all at once.
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Monitor multiple websites at once from a single dashboard. Add URLs one at a time or paste a bulk list (one per line), then click Check All to ping every site in parallel. Each result shows an UP / WARNING / DOWN status badge, the exact HTTP status code with a plain-English label (200 OK, 301 Moved, 403 Forbidden, 503 Unavailable, etc.), the total response time color-coded as Fast / Moderate / Slow / Very Slow, and the final URL after any redirects. A live stats bar at the top tracks your overall success rate, total online count, total down/error count, and average response time across all checks. Individual Re-check buttons let you re-ping a single site without re-running the whole batch. Settings let you adjust the request timeout (5 s / 10 s / 15 s / 30 s) and enable automatic re-checks on a 1-minute, 5-minute, or 10-minute interval so you can watch for flapping or recovery. Export all results to a CSV file with one click - includes URL, status, HTTP code, response time, final URL, redirect flag, timestamp, and any error message. Your URL list is automatically saved in your browser so it persists across sessions. All checks run client-side via a CORS proxy - no account or server setup required.
How to Use
- 1Type or paste a URL into the input field - you can include https://, www., or just the bare domain like example.com - and click Add or press Enter
- 2To add many URLs at once, click 'Bulk Add', paste one URL per line into the text area, then click 'Add URLs'
- 3Click 'Check All' to ping every URL in your list simultaneously - results appear as each check completes
- 4Read the status badge next to each result: UP (green) means the site is accessible, WARNING (yellow) means it responded with a 4xx error, DOWN (red) means it's unreachable or returning a server error
- 5Check the HTTP code next to the status badge - for example 200 OK, 301 Moved, 403 Forbidden, or 503 Unavailable - to understand the exact server response
- 6Check the response time to see how fast the server replied - green means Fast (<400ms), yellow is Moderate, orange is Slow, red is Very Slow
- 7Look for a blue arrow icon on any result - this indicates the URL redirected to a different final destination, shown beside the arrow
- 8Click 'Re-check' on any individual row to re-ping that specific site without re-running the whole list
- 9Open Settings to adjust the request timeout (5s to 30s) or enable auto-refresh (1 min / 5 min / 10 min) to monitor sites continuously
- 10Click 'Export CSV' once you have results to download a spreadsheet with status, HTTP code, response time, final URL, redirect flag, and timestamps for all sites
Features
- Multi-URL batch checking - add unlimited URLs and check them all simultaneously in parallel
- Bulk Add panel - paste a list of URLs (one per line) to add multiple sites instantly
- UP / WARNING / DOWN status badges - color-coded per site with clear criteria for each level
- HTTP status codes - exact code (200, 301, 403, 503, etc.) with a plain-English label for every result
- Response time measurement - total round-trip time color-coded as Fast / Moderate / Slow / Very Slow
- Redirect detection - shows the final destination URL when a site redirects, with a blue arrow indicator
- Live stats bar - overall success rate %, online count, down/error count, and average response time
- Individual Re-check - re-ping any single URL without re-running the entire list
- Configurable timeout - choose 5 s, 10 s, 15 s, or 30 s per request in the Settings panel
- Auto-refresh monitoring - automatically re-check all URLs every 1, 5, or 10 minutes
- CSV export - download all results with URL, status, HTTP code, response time, redirect info, and timestamps
- Persistent URL list - your URL list is saved in localStorage and restored when you return to the tool
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