1. How your data is processed
Data Transformer operates entirely within your web browser using client-side JavaScript. When you upload a file or paste text into the tool, that data is loaded directly into browser memory (RAM) and processed there. No file content, text, or derived data is transmitted to any server — by us or anyone else — at any point during or after processing.
When you export a result, the output file is generated locally in your browser and downloaded directly to your device. Once you close or refresh the browser tab, all in-memory data is permanently discarded.
2. What we do not collect
We do not collect, store, or process any of the following:
- The content of any file you upload or paste
- Your name, email address, or any other personal identifiers
- IP addresses linked to tool usage
- Usage analytics, heatmaps, or session recordings
- Device fingerprints or browser identifiers
- Advertising identifiers of any kind
Because we collect no personal data, we have nothing to sell, share, or disclose to third parties.
3. Cookies and local storage
Data Transformer uses one item of browser storage: a key named theme saved to localStorage to remember your light/dark mode preference between visits. This value is a single string ("light" or "dark") and never leaves your device.
We set no tracking cookies, session cookies, or third-party cookies of any kind.
4. Third-party resources loaded from CDNs
To function without a build step, Data Transformer loads a small number of open-source libraries from public content delivery networks at page load time. These are:
- Tailwind CSS — loaded from
cdn.tailwindcss.com - SheetJS (xlsx) — loaded from
cdn.jsdelivr.net - PapaParse — loaded from
cdnjs.cloudflare.com - Google Fonts (Manrope, JetBrains Mono) — loaded from
fonts.googleapis.com
These CDN requests reveal your IP address and browser user-agent to those providers, subject to their respective privacy policies. No file content or application-level data is included in these requests — they are standard static-asset fetches that occur before any user interaction. If you require complete network isolation, you may self-host these assets.
5. Children's privacy
Data Transformer is a general-purpose productivity tool and is not directed at children under the age of 13. Because we collect no personal information from any user, we do not knowingly collect information from children either. If you believe a child has submitted personal data through this tool, please contact us and we will work promptly to address the concern.
6. Changes to this policy
If we make material changes to this Privacy Policy, we will update the "Last updated" date at the top of this page. We encourage you to review this page periodically. Continued use of the tool after any changes constitutes your acceptance of the updated policy.
7. Contact
Questions about this policy? You can reach us at privacy@datatransformer.app. We aim to respond within 5 business days.