Import a CSV or vCard, search instantly across every field, tag and group, and export whenever you like. Tested past 25,000 contacts. There is no account and no server — the data lives in this browser.
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Contacts are kept in IndexedDB, the browser's own database. Unlike the simpler storage most web tools use, it comfortably holds tens of thousands of records — the practical ceiling is usually your available disk space rather than any fixed limit.
The trade-off is that it's local. There's no sync between your laptop and your phone, and no copy on a server for you to recover from. That's deliberate: nobody else ever holds your contact list. But it does mean backups are your responsibility, so export regularly.
CSV with a header row is detected automatically — columns named something like name, email, tags or note are matched, and a file that's just a list of addresses works too. vCard files exported from Outlook, Apple Contacts or Google Contacts are read directly. Duplicates are matched on the email address and skipped.
Export writes a CSV containing everything, which imports into Gmail Contacts, Outlook, or any CRM. The JSON export is a complete backup including tags and notes, and can be imported straight back here.
In this browser on this device, using IndexedDB — the browser's own database. Nothing is sent to a server and there is no account.
Tens of thousands comfortably; it's been built and tested past 25,000. The practical ceiling is your available disk space rather than any fixed limit, unlike the simpler storage most web tools use.
Your contacts are erased. There is no sync and no copy on a server to recover from. That's the trade-off for nobody else holding your list, and it makes the export button a backup rather than a convenience — use it regularly.
Yes. Google Contacts CSV, Outlook CSV and vCard exports are all read directly, including names, groups and notes where present. A plain list of addresses works too. Duplicates are matched on the email address and skipped.
Not as one shared list. The data lives in a single browser on a single device. You can export from one and import into the other, but there's no automatic sync.