Legal

Privacy Policy

Last updated: June 4, 2026

Short version: FillColor does not collect, store or share any personal data. All files you upload are processed entirely in your browser and never sent to any server. We do not use cookies for tracking.

1. Who We Are

FillColor ("we", "us", "our") is a free online diagram colour fill tool available at fillcolor.netlify.app. It is built for teachers, students and anyone who needs to colour diagrams, maps or PDF files online.

2. Information We Do NOT Collect

We do not collect:

Your name, email address or any personal details
The files or images you upload to the tool
Your location or IP address
Any usage data, analytics or behavioural tracking
Login credentials (there is no account system)

3. How Your Files Are Processed

All file processing happens entirely in your browser using JavaScript. When you upload an image or PDF:

The file is read and displayed locally in your browser
No file data is transmitted to our servers
No file data is stored anywhere after you close the browser tab
Downloads (PNG/PDF) are generated locally in your browser

Your uploaded files remain completely private and are never visible to us.

4. Cookies

FillColor does not use tracking cookies. We do not use Google Analytics, Facebook Pixel or any third-party tracking service.

The only data stored in your browser is your theme preference (dark/light mode), which is saved in your browser's local storage and never sent anywhere.

5. Third-Party Services

FillColor uses the following third-party services which may set their own cookies:

Google Fonts — for typography (Syne and Space Mono fonts). Google may log font requests. See Google's privacy policy at policies.google.com/privacy
PDF.js (Mozilla) — loaded from cdnjs.cloudflare.com for PDF rendering. See Cloudflare's privacy policy.
Netlify — our hosting provider. Netlify may collect standard server access logs (IP address, request time). See Netlify's privacy policy at netlify.com/privacy

6. Google AdSense

We may display advertisements on this site through Google AdSense. Google AdSense uses cookies to serve ads based on your prior visits to this website and other sites on the internet. You may opt out of personalised advertising by visiting www.aboutads.info.

7. Children's Privacy

FillColor is safe for use by students of all ages including children. We do not knowingly collect any personal information from anyone, including children under 13.

8. Changes to This Policy

We may update this Privacy Policy occasionally. Any changes will be reflected on this page with an updated date at the top. Continued use of the tool after changes means you accept the updated policy.

9. Contact

If you have any questions about this Privacy Policy, please use our Contact page to get in touch.