Check as you normally do
Sign in to the official visa portal and open the appointment calendar. SlotSignal never asks for your password.
A community-powered view of U.S. visa appointment availability. Get a heads-up when applicants report a date that fits your plans.
Filter recent community reports. Availability can change quickly; confirm dates on the official portal.
| LOCATION | VISA TYPE | EARLIEST DATE REPORTED | CAPTURED | COMMUNITY SIGNAL |
|---|
ⓘ Sample preview data shown. Live community reports will appear as applicants share them. A report is not a confirmed appointment.
SlotSignal helps the community share what they see, while you stay in control of your application.
Sign in to the official visa portal and open the appointment calendar. SlotSignal never asks for your password.
Enter the earliest date you can see. Confirm the location and category, then choose whether to share.
Choose your locations and date range. When a fresh report matches, verify it yourself on the official portal.
The SlotSignal extension makes it easy to contribute while you browse. When you choose, it reads date information from visible calendar cells and fills a proposed report for your review.
Nothing is shared until you confirm.
Core community access and basic alerts are free with SlotSignal.
Get started and help keep the data fresh.
More control over the dates you’re watching.
Install a browser build to scan visible calendar dates, review a report, and choose when to share. Store listings are in preparation.
Chrome 88 or later. Download the ZIP, extract it, then load the folder using developer mode in chrome://extensions.
Download Chrome build ↗Chromium Edge 88 or later. Extract the build and load it using developer mode in edge://extensions.
Download Edge build ↗Desktop 109 or later. Temporary installation is available through about:debugging. The store release is being prepared.
Download Firefox build ↗Safari 15.4 or later is the target. This archive requires conversion and signing with Apple's extension tools; a signed app is not available yet.
Download conversion source ↗Applicants voluntarily share dates they can see on their appointment calendar. Each report includes a capture time. Confirm availability on the official portal because dates can change.
You sign in and complete all booking steps on the official visa portal. SlotSignal helps you review community observations.
Open your appointment calendar and press Scan visible calendar in the extension. It reads supported visible date cells, previews the earliest readable date, and asks you to review it before sharing. If the calendar structure is unsupported, you can enter the date yourself.
No. Your SlotSignal account is separate from your visa account. Calendar reports do not include portal credentials, passport details, screenshots, or page HTML.
The initial market is U.S. visa appointments in India, with B1/B2, F-1, and H-1B report categories across Chennai, Hyderabad, Kolkata, Mumbai, and New Delhi.
Community reports and up to five extension alert profiles are free. Paid plans are not available yet.
Use the extension's Alerts settings to choose your location, category, and date range. Browser notifications need notification permission. Email alerts require a verified address and working email delivery. SMS delivery is not available yet.
Check your spam folder and confirm the email address. Codes expire in ten minutes. If delivery is unavailable, the form will show an error and account creation will not finish.
SlotSignal is an independent community project, with no affiliation to the U.S. Department of State, an embassy, or the appointment service.
After signing in, open My account to view your dashboard, change your password, or log out. See our Privacy Policy for retention and deletion requests.
For support, feedback, or account privacy requests, email alerts@slotsignal.com.
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