Last updated: August 2026
This Cookies Policy explains how PPB to PPM Converter ("we", "us", or "our") uses cookies, local browser storage (localStorage), and similar technologies when you visit our website and use our scientific concentration conversion calculators.
We believe in transparency and user control. Our website is engineered to minimize data storage and operates primarily with client-side computation, ensuring your numerical data remains securely in your own browser.
Cookies are small text files placed on your device by websites you visit. They are widely used to make websites work efficiently and provide preference information.
Local Storage (localStorage) is a modern web standard that allows web applications to store key-value data directly in your browser. Unlike traditional cookies, data stored in localStorage is never automatically transmitted to the web server with every HTTP request, making it faster, more secure, and privacy-preserving.
The table below details all browser storage items utilized across PPB to PPM Converter:
| Key / Name | Type | Category | Duration | Purpose |
|---|---|---|---|---|
| theme | localStorage | Functional | Persistent | Remembers your chosen interface visual appearance (Light or Dark theme). |
| ppb_cookie_consent | localStorage | Strictly Necessary | Persistent | Remembers that you have accepted our cookie and privacy notice so the banner is not shown repeatedly. |
| calc_state | sessionStorage | Functional | Active Session | Temporarily preserves active concentration values in interactive calculator widgets during single session tab switching. |
These items are essential for the operation of fundamental site features, such as saving your consent status to prevent repeated modal popups. They cannot be turned off without degrading website usability.
These items enable enhanced convenience, such as preserving your selected color mode (Dark / Light) across visits. They do not track your activity across third-party websites.
Our hosting infrastructure collects standard, non-identifying server request logs (such as request timestamps and HTTP status codes) strictly for load balancing, network security, and uptime monitoring. These logs do not contain personally identifiable information (PII).
You have the right to accept, reject, or clear browser cookies and local storage at any time. You can adjust your preferences directly within your browser settings:
Note: If you clear or disable local storage, your visual theme preference will revert to the system default upon your next visit.
We may periodically update this Cookies Policy to reflect changes in our technical architecture, legal standards, or regulatory guidelines. When updates occur, the "Last updated" date at the top of this document will be revised accordingly.
If you have questions, feedback, or concerns regarding our use of cookies and local storage, please reach out to our team at:
Email: contact@ppbtoppm.com