Legal

Privacy Policy

Last updated: July 4, 2026

This Privacy Policy explains how ultFMT(“we”, “our”, “us”) handles information when you use our tools at ultfmt.com (or any subdomain). We have built ultFMT with privacy as a core principle — not an afterthought.

1. The Short Version

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We do not store any files or data you submit to our tools.

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We do not require accounts, logins, or any personal information.

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We do not collect or store your API keys.

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We do not sell or share your data with third parties.

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We use only basic server logs for uptime monitoring (no content, no IP tracking beyond what your ISP and Render.com infrastructure logs).

2. What Information We Collect

2a. Information you submit to tools

When you use any ultFMT tool (e.g. uploading a CSV for Dataset Health or Feature Intelligence, pasting a prompt into the Token Estimator), the content is transmitted to our server solely to compute a result and return it to you.

What happens to your data on the server:

  1. Your data is received by the server and loaded into RAM only.
  2. The requested computation (analysis, diff, token count, etc.) is performed.
  3. The result is sent back to your browser.
  4. The data is garbage-collected from memory. No copy is written to disk or any database.

Client-side tools: Some tools (e.g. the Learning Curve Plotter, Prompt Diff, JSON Formatter) operate entirely in your browser and never send any data to our servers at all.

2b. Server logs

Our hosting provider (Render.com) automatically records basic HTTP request logs, which may include:

  • Request timestamp
  • HTTP method and URL path (e.g. POST /api/v1/tools/dataset-health)
  • HTTP status code
  • Response size
  • Your IP address (standard web server behaviour)

These logs do not contain the content of your requests (i.e. your files or text are not logged). Logs are retained by Render.com per their own retention policy, over which we have limited control. We do not access these logs except to diagnose server errors.

2c. Local browser storage

ultFMT stores your UI preferences(e.g. font size, tab size, word wrap settings) in your browser's localStorage under the key ultfmt_settings. This data never leaves your device and is not transmitted to us. You can clear it at any time by clearing your browser's site data for this domain.

3. What We Do Not Collect

  • Names, email addresses, or any personally identifiable information
  • API keys for any AI provider (OpenAI, Anthropic, Google, etc.)
  • Payment information of any kind
  • Cross-site tracking data (other than standard ad network cookies)
  • The content of files, prompts, or datasets submitted to tools

4. Third-Party Services

ultFMT uses the following infrastructure providers:

  • Render.com — Hosts our backend API server. Render may collect infrastructure-level data as described in their Privacy Policy.
  • Vercel / hosting provider — Hosts the frontend. May collect access logs per their standard data handling policies.

5. Advertising & Cookies

We use third-party advertising companies, such as Google AdSense, to serve ads when you visit our website. These companies may use information (not including your name, address, email address, or telephone number) about your visits to this and other websites in order to provide advertisements about goods and services of interest to you.

  • Third party vendors, including Google, use cookies to serve ads based on a user's prior visits to your website or other websites.
  • Google's use of advertising cookies enables it and its partners to serve ads to your users based on their visit to your sites and/or other sites on the Internet.
  • Users may opt out of personalized advertising by visiting Ads Settings. (Alternatively, you can direct users to opt out of a third-party vendor's use of cookies for personalized advertising by visiting www.aboutads.info).

By using this site, you consent to the use of such cookies and the sharing of data captured by such cookies with Google and other third-party partners.

6. Sensitive Data Warning

⚠ Please be cautious

While we do not store your data, your files and text transit our servers over HTTPS. We strongly advise against uploading datasets or entering text that contains:

  • Personal health information (PHI) or medical records
  • Financial records or payment card data
  • Government-issued ID numbers
  • Confidential business trade secrets
  • Credentials, API keys, or passwords

If you must test with sensitive data, consider anonymizing or masking it first.

7. Children's Privacy

ultFMT is intended for developers and technical users. We do not knowingly collect any information from children under the age of 13. If you believe a child has submitted personal information through our Service, please contact us via GitHub.

8. Security

All communication between your browser and our servers is encrypted via HTTPS/TLS. Our backend implements input validation, file size limits, and filetype whitelisting to protect against common web vulnerabilities. However, no method of transmission over the internet is 100% secure, and we cannot guarantee absolute security.

9. Changes to This Policy

We may update this Privacy Policy from time to time. Any changes will be reflected on this page with an updated “Last updated” date. We encourage you to review this page periodically.

10. Contact

If you have any questions or concerns about this Privacy Policy, please open an issue on our GitHub repository.

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