None. Tokenizer does not collect, store, transmit, or share any personal data, browsing data, message content, or usage statistics.
All token counting and cost estimation runs entirely within your browser using local JavaScript. The text you type is never read by Tokenizer's code outside of the browser tab you're currently viewing, and is never sent to any server — not ours, not anyone's.
Tokenizer may use your browser's local storage API to save your session token count and preferences (such as overlay position) locally on your device. This data never leaves your device and is not accessible to us or any third party.
Tokenizer intercepts outgoing API responses on supported platforms to read token usage metadata (token counts returned by the AI provider in their API responses). This interception happens locally in your browser. Tokenizer does not modify, block, or retransmit any requests or responses. Your API keys are never read or stored.
Tokenizer does not use any analytics, advertising, tracking, or crash reporting services. There are no third-party SDKs embedded in the extension.
Tokenizer is fully open source. You can review every line of code at:
https://github.com/gyeningcorp/tokenizer
Tokenizer does not knowingly collect data from anyone, including children under 13.
If we ever change this policy (which would only occur if we added features that process data), we will update this page and bump the version number above.
Questions? Reach us at:
The Digital Duo
chris@thedigitalduo.net
thedigitalduo.net
Pittsburgh, PA