Privacy Policy
Effective: 2026-11-09
This policy explains how Daytool (“we”, “the site”) handles personal information, in line with Korea’s Personal Information Protection Act and, where they apply, the EU/UK GDPR and US state privacy laws.
1. What we process and why
There are no accounts or logins. Anything you type into a calculator or converter, and any photo or file you add to an image tool, is processed in your browser only and is never sent to us or stored. Converted files are downloaded straight to your device.
| Context | Data | Purpose | Retention |
|---|---|---|---|
| Email inquiries | Email address, name (if given), message | Replying to you and keeping a record | Deleted within 30 days after resolution, including attachments and copies saved by the operator |
| Visiting the site (automatic) | IP address, browser and device details, requested page, time | Delivering pages and security (blocking attacks) | Per our hosting provider’s (Cloudflare) policy; we do not collect or keep these ourselves |
For visitors in the EEA, UK or Switzerland, our legal bases are legitimate interests (delivering and securing the site, answering inquiries).
2. Sharing
We do not sell personal information or share it with third parties, except where required by law.
3. Service providers and international transfers
- Cloudflare, Inc. (United States, data centers worldwide) hosts and delivers the site and protects it from attacks. It processes IP addresses and request details when you visit. Cloudflare privacy policy
- Resend (Plus Five Five, Inc.) (United States) is used for email. We receive, read and reply to inquiries directly in Resend Inboxes. We delete inbox records and attachments within 30 days after resolution. Privacy policy
These transfers are needed to run the site. If you do not want them, you can choose not to use the site or email us.
4. Cookies and browser storage
The site itself sets no cookies. It only saves your dark-mode choice, whether you dismissed the language banner and the country rules you picked (South Korea or United States) in your browser’s local storage. This does not identify you, and clearing site data removes it.
If you have not picked a country, the site uses your device’s time zone as reported by your browser (for example America/New_York) to choose which country’s rules to show first. This happens only in your browser; your time zone and IP address are not sent to us or stored.
5. Advertising
The site currently shows no ads. If we start, we will update this policy at least 7 days before.
Within 30 days after an inquiry is resolved, the operator deletes its inbox records, attachments and separately saved copies, and empties the trash. This is a manual procedure, not an automatic deletion setting. Resend separately states that email and log data on standard plans is retained for 30 days and backups for 7 days. Earlier removal of provider-held records can be requested from Resend support. See Resend retention policy.
6. Your rights
You can ask to access, correct or delete your personal information, restrict or object to its processing, or withdraw consent. Email the contact below and we will reply within 10 days. In the EEA or UK you may also complain to your data protection authority. In Korea you can contact the Personal Information Dispute Mediation Committee (1833-6972) or the Personal Information Infringement Report Center (118).
7. Security
All pages are served over HTTPS. The Google account used to sign in to the inquiry email service has two-step verification enabled. We process only what we need.
8. Children
The site is not directed at children under 14. Children under 14 should contact us together with a parent or guardian. If we learn we received a child’s information without that consent, we delete it.
9. Contact
Privacy officer: yang sung chul · [email protected]
10. Changes
We announce changes on the site at least 7 days before they take effect (30 days for changes that significantly affect your rights) and keep earlier versions available.