プライバシーポリシーとデータセキュリティ
Last updated: April 2026
Zero-Retention Geodetic Architecture
Your coordinate data security is our absolute highest priority. Our entire conversion engine processes your sensitive geographic inputs 100% locally in your browser. We do not store, intercept, or transmit your individual coordinate datasets to any central server.
Information Collection & Use
We collect standard minimal analytics to optimize your experience, which includes basic anonymized interaction tracking (like scroll depth and feature usage patterns). We do NOT collect personally identifiable information unless you explicitly provide it via our お問い合わせ/サポート form.
File Processing Security (一括ファイル変換ツール)
- When you upload CSV, Excel, or GeoJSON files to our 一括ファイル変換ツール, the parsing and mathematical transformations occur natively in your browser using JavaScript Web Workers.
- The files are never uploaded to our backend servers. There are no temporary files created on our infrastructure.
- There is zero risk of your proprietary site data falling into unauthorized hands during conversion. Your file stays on your hard drive.
Cookies and Web Beacons
Like any standard web application, we use 'cookies' to securely store user preferences (like your preferred Coordinate Output format). Furthermore, our platform includes Google AdSense, which uses tracking cookies to serve relevant advertisements based on your prior visits.
GDPR / CCPA Compliance & Right to be Forgotten
お客様はご自身のデータを完全に管理する権利を有しています。ツールはサーバー側にデータベースを保持しないため、「データの削除」はブラウザのローカルストレージ（キャッシュ）を消去するだけで完了します。以下のボタンから、ローカルに保存された変換履歴や設定を完全に消去できます：
You have the absolute right to clear cookies from your browser or opt out of personalized advertising by visiting the Google Ad Settings interface.
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重要：計算結果の正確性を確認してください
座標精度はデバイスや測地系によって異なります。以下の確認を行わずに実務で使用しないでください：