Privacy Policy
We keep data to a minimum and collect only what the service needs to work.
This is a translation provided for convenience. The Japanese version is the authoritative text; if the two differ, the Japanese version applies.
1. What we collect
| Data | When | Kept for |
|---|---|---|
| The files you upload | On upload | Until the retention period you set (deleted automatically after) |
| Metadata such as file names and sizes | On upload | A limited period after deletion or expiry, for statistics |
| Email address | Only when you create an account | Until you delete your account |
| IP address (anonymised hash) and browser information | On download | A limited period, for statistics and abuse prevention |
| Cookies (login session and your language choice) | On login and when switching language | Until logout or expiry |
IP addresses are anonymised with a salted hash; raw IP addresses are never stored. We do not currently use cookies or trackers for advertising or behavioural targeting. If we introduce them, we will revise this policy and tell you before they go live.
2. Why we use it
- To provide the transfer service (upload, storage, download)
- To provide account features such as transfer history and download analytics
- To prevent and investigate abuse
- For statistical analysis to improve the service, in a form that does not identify individuals
3. How we treat your file contents
The operator does not read, analyse or reuse the contents of the files you send. Access may occur only to the minimum extent necessary for technical investigation of a fault, or to comply with a lawful disclosure request.
4. Third parties and processors
Except where required by law, we do not provide your information to third parties. To run the service, we entrust storage and processing to:
- Cloudflare, Inc. (file storage and delivery)
- Vercel, Inc. (running the application)
- Supabase, Inc. (database and authentication)
5. Your rights
- You can delete files you uploaded at any time using the delete key.
- To delete your account or ask what we hold about you, contact us through the contact form.
6. Revisions
If we revise this policy, we will announce it on the service. For significant changes we will make this clear.
Effective 26 August 2026