Use case · Phone ↔ computer
Send files from phone to computer, no app or sign-in
Open cpcp in your phone browser, pick a file, and get a 6-digit pickup code. Enter that code on your computer to download. The two devices do not need the same Wi-Fi or the same account.
How it works
- Open cpcp in your phone browser and choose Files, or paste some text.
- Seal the parcel to get a 6-digit pickup code. The recipient can also scan the QR code.
- Open the same site on your computer, enter the code, and download. It expires after one hour and can no longer be picked up; storage is cleared within 10 minutes after that.
When it fits, and when it doesn't
- Fits: moving a photo, document, or installer from phone to computer, or the other way round.
- Fits: the devices are on different networks, or one of them is not an Apple device.
- Fits: you do not want to create an account, add a contact, or leave a chat history for one file.
- Does not fit: files you need to sync or version over time.
- Does not fit: a single file over 100MB (at most 20 files and 200MB in total).
- Does not fit: confidential files. cpcp is not end-to-end encrypted, and files sit briefly on the server.
How it compares
| Option | Requires | Limits |
|---|---|---|
| WeChat File Transfer | A WeChat account and a history trail | File size limits; log in again on a new device |
| AirDrop | Apple devices, close range | Not available on Windows or Android |
| Cloud drive | An account, usually an app | Uploads and downloads can be slow; files stay in the account |
| cpcp | A browser, no account | 100MB per file, 200MB total; not end-to-end encrypted; no resume |
Frequently asked
Do the phone and computer need the same Wi-Fi?
No. cpcp relays through the cloud, so both devices only need to be able to open the site.
Do I need to install an app or create an account?
Neither. Open the site in a browser on both devices; the pickup code is the only credential.
How long are files kept?
They expire after one hour and can no longer be picked up; storage is cleared within 10 minutes after that. Download links only work within the one-hour window.