Chart Maker Hub

Privacy Policy

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Last updated:

This policy explains what information is processed when you use Chart Maker Hub (“the site”), operated by Chart Maker Hub.

1. Your chart data stays in your browser

The chart makers run entirely in your web browser. Data you type, paste or import (including CSV, Excel and JSON files) is processed on your device and is not uploaded to our servers or to any third party. We do not have access to it.

To provide autosave and “Saved charts”, the site stores your chart data in your browser’s localStorage on your device. It stays there until you delete it, using Saved charts → Delete all data this site stored in this browser, or clear your browser’s site data. Local storage is not a backup: clearing your browser, using private browsing or switching device means the data is not available. Download a .json chart file to keep a copy.

2. Information collected automatically

Like most websites, our hosting provider may process technical data such as IP address, browser type and the pages requested in server logs, for security and reliability. We do not currently use an analytics service. If we add one, this policy will be updated before it is enabled.

3. Advertising

The site may display ads provided by Google AdSense. When ads are enabled, Google and its partners may use cookies or similar technologies to serve and measure ads, including personalized ads where permitted and where you have consented. You can learn how Google uses information at policies.google.com/technologies/partner-sites and manage ad personalization at adssettings.google.com. Where required by law (for example in the EEA, UK and Switzerland), ads load only after you give consent through our consent tool. Your chart data is never shared with advertisers.

4. Cookies and local storage

  • Local storage (functional): autosaved charts, saved charts and your light/dark theme preference. These are stored on your device only.
  • Advertising cookies: only when ads are enabled and, where required, after consent.

5. Children

The site is suitable for classroom use and does not knowingly collect personal information from children. Chart data stays on the device.

6. Your rights

Because we don’t store your chart data, there is nothing for us to access, correct or delete on our side. You control the data in your browser. For questions about any other personal data, such as emails you send us, contact hello@chartmakerhub.com. Depending on where you live, you may have rights under laws such as the GDPR or CCPA.

7. Changes

We will update this page if our practices change, and revise the “last updated” date.

8. Contact

Chart Maker Hub – hello@chartmakerhub.com