Privacy Policy
Last updated: July 1, 2026
The short version
Your calculator inputs, files and text are processed locally in your browser and are never sent to our servers. The site shows ads via Google AdSense, which may use cookies for ad personalization and measurement — and you can reject that at any time via "Cookie Settings" in the footer.
1. Data processed by our tools
All tools on 4C Tool Hub (calculators, converters, generators, PDF and image utilities) run entirely on your device using JavaScript. We do not receive, store, or have access to the numbers you enter, the text you type, or the files you process. Some tools save your preferences (for example, your theme choice or consent decision) in your browser's local storage; this data stays on your device and can be cleared through your browser settings.
The currency converter fetches current exchange rates from a third-party rates API. Only the selected currency pair is requested — no personal data is included in that request.
2. Advertising (Google AdSense)
We use Google AdSense to display advertising, which keeps the site free. Google and its partners may use cookies and similar technologies to serve ads based on your visits to this and other websites, and to measure ad performance.
- Google's use of advertising cookies is described at policies.google.com/technologies/ads.
- You may opt out of personalized advertising at adssettings.google.com.
- We implement Google Consent Mode v2: advertising cookies default to denied until you make a choice in our cookie banner. If you reject, ads still appear but are non-personalized.
3. Cookies and local storage
| Item | Purpose | Type |
|---|---|---|
cookie_consent_status | Remembers your cookie/ads consent choice | Local storage, this site only |
theme | Remembers light/dark mode preference | Local storage, this site only |
| Google advertising cookies | Ad serving, personalization (only if accepted), fraud prevention, measurement | Third-party (Google) |
4. Server logs
Like nearly all websites, our hosting provider automatically logs basic technical data for requests (IP address, browser user-agent, requested page, timestamp) for security and reliability. These logs are not used to identify individual visitors and are rotated automatically.
5. Email
If you email us at support@4ctoolhub.com, we keep the correspondence only as long as needed to resolve your question. We do not add you to mailing lists or share your address.
6. Children
The site is a general-audience service and does not knowingly collect personal information from children under 13.
7. Your rights
Depending on where you live (e.g., GDPR in the EU/UK, PIPEDA in Canada, CCPA in California), you may have rights to access, correct or delete personal data. Because our tools don't collect your personal data in the first place, most requests concern advertising cookies — which you can control via the cookie banner, your browser settings, or Google's ad settings linked above. For anything else, contact us at support@4ctoolhub.com.
8. Changes
We'll update this page when our practices change and revise the date at the top. Significant changes will be noted on the homepage.