Last updated: November 5, 2026
This Privacy Policy describes how PromptShield ("we", "us", or "our") handles information when you use the PromptShield Chrome browser extension (the "Extension" or "Service").
PromptShield is designed to help users detect and sanitize supported sensitive information locally before submitting text prompts to ChatGPT/Gemini.
We respect your privacy and aim to minimize the collection, transmission, and storage of personal information.
By using PromptShield, you acknowledge the practices described in this Privacy Policy.
For the purposes of this Privacy Policy:
Application or Extension refers to PromptShield, the Chrome browser extension.
Service refers to the functionality provided by PromptShield.
Personal Data means information relating to an identified or identifiable individual.
Sensitive Information refers to information detected by PromptShield, such as email addresses, phone numbers, and supported developer secrets.
Service Provider means a third party that provides services used by PromptShield, including subscription and payment services.
You refers to the individual using PromptShield.
PromptShield is developed and operated from Victoria, Australia.
PromptShield processes text entered into supported ChatGPT/Gemini interfaces to identify potentially sensitive information.
Depending on the supported detection rules, this may include:
Email addresses
Phone numbers
Selected developer secrets, such as supported API keys or credentials
Other sensitive patterns supported by the Extension
Sensitive-information detection and sanitization are performed locally in your browser.
PromptShield does not require your original prompt content to be uploaded to an external detection server to perform these functions.
When sanitization succeeds, detected values are replaced with placeholders before the prompt is submitted to ChatGPT/Gemini.
PromptShield does not guarantee that every sensitive value will be detected or removed. If sanitization is unavailable or fails, messages may still be submitted normally, including their original content.
PromptShield may use browser storage to maintain information necessary for its functionality, including:
Extension preferences and settings
Scan usage and quota information
Subscription-related state
Temporary information needed to support optional local response restoration
This information is used to operate the Extension and maintain your selected settings.
PromptShield provides an optional feature that can restore supported placeholders in AI responses to their original values for easier reading.
This feature:
Is disabled by default
Must be enabled by the user
Operates locally within the browser
Does not require sending the original values to ChatGPT/Gemini for restoration
Does not restore supported developer secrets
When enabled, restored sensitive information may become visible within the ChatGPT/Gemini page.
Disabling this feature may not remove sensitive values that have already been displayed.
Restoration is provided on a best-effort basis and may not work after page refreshes, navigation, or changes to the supported website.
PromptShield offers free and paid subscription plans.
Subscription management and payment functionality are provided through ExtensionPay and its associated payment services.
When you purchase or manage a subscription, relevant account, transaction, and subscription information may be processed by these third-party providers.
PromptShield uses subscription-related information as necessary to determine access to paid features and manage subscription status.
Payment information is handled according to the applicable payment provider's privacy policies and security practices.
Please review the privacy policies of the relevant third-party payment and subscription providers for additional information.
2.5 Supported AI Platforms
PromptShield supports text-prompt protection on ChatGPT, Google Gemini, Microsoft Copilot (personal chat), and Claude.
Local Detection and Sanitization
PromptShield checks supported text prompts locally in the browser. Detected sensitive information can be replaced with placeholders before submission.
Custom Privacy Rules
Users may create custom exact-text rules to protect additional information. These rules are stored in the browser's local extension storage and can be edited, disabled, or deleted by the user.
Local storage does not mean that stored values are encrypted.
Sending and User Control
Users can choose to sanitize detected information, send the original text unchanged, or cancel submission.
If protection is unavailable or a value is not detected, text may be sent to the selected AI provider without sanitization.
Optional Response Restoration
On ChatGPT, optional local response restoration may replace supported placeholders in AI responses with their original values. This feature is disabled by default and does not restore developer secrets.
Subscription Management
PromptShield uses ExtensionPay for subscription and entitlement management. Payment-related information may be processed by the relevant payment service according to its privacy practices.
Limitations
PromptShield provides best-effort, pattern-based protection and cannot guarantee detection of all sensitive information. Attachments, images, and audio are not scanned.
Information processed by PromptShield is used to:
Detect and sanitize supported sensitive information in prompts
Apply user-selected preferences
Manage free scan quotas
Verify subscription status and provide paid features
Support optional local response restoration
Maintain the functionality, reliability, and security of the Extension
We do not use prompt content for advertising or sell prompt content to third parties.
PromptShield's local detection functionality does not require sharing original prompt content with our servers.
We may rely on third-party service providers for subscription management and payment processing.
Information necessary for those services may be processed by the applicable providers.
We may also disclose information where required by applicable law or a valid legal request, to the extent that such information is available to us.
Important: ChatGPT/Gemini is a separate third-party service. When you submit a message, the text actually submitted is handled by ChatGPT/Gemini according to its own terms and privacy policies.
PromptShield does not control ChatGPT or Gemini's data collection, storage, or processing practices.
PromptShield uses browser storage for certain settings and operational information.
Stored information may remain available until it is removed by the Extension, cleared through browser settings, or deleted when the Extension is uninstalled, depending on the storage mechanism used.
Temporary sensitive-value mappings are intended to support local functionality and are not intended to serve as permanent records of your original prompts.
Subscription and transaction information processed by third-party providers may be retained according to their respective policies and applicable legal requirements.
PromptShield is operated from Victoria, Australia.
Third-party subscription and payment service providers may process information in countries outside Australia.
Such processing is governed by the applicable providers' privacy policies and relevant legal requirements.
Local prompt sanitization does not require transmitting original prompt content internationally to a PromptShield detection server.
You can control certain aspects of PromptShield through the Extension's settings.
Depending on the available functionality, you may:
Enable or disable optional local AI response restoration
Manage your subscription
Clear Extension-related browser data
Uninstall PromptShield
You may contact us regarding privacy-related questions or requests concerning information that we control.
Requests involving third-party subscription or payment records may also need to be directed to the relevant service provider.
Your rights regarding access, correction, or deletion of personal information may depend on applicable law.
PromptShield is designed with privacy-conscious principles, including local processing of supported sensitive information.
We take reasonable measures to reduce unnecessary collection and transmission of sensitive data.
However, no browser extension, software application, electronic storage method, or internet transmission can be guaranteed to be completely secure.
PromptShield provides best-effort protection and should not be treated as a guarantee that all sensitive or confidential information will be detected.
Users should review prompts before submitting information to third-party AI services.
PromptShield is not specifically designed for children under the age of 13.
We do not intentionally use the Extension to collect personal information from children under 13.
If you believe that personal information relating to a child has been improperly collected by us, please contact us.
PromptShield interacts with or relies on certain third-party services, including:
ChatGPT/Gemini: The supported AI service where users submit prompts.
ExtensionPay: Subscription and payment management.
These services operate independently and may have their own privacy policies, terms, and data-handling practices.
We encourage users to review those policies.
We are not responsible for the privacy practices of third-party websites or services.
We may update this Privacy Policy to reflect changes in PromptShield's functionality, applicable legal requirements, or data-handling practices.
When changes are made, we will publish the updated Privacy Policy and revise the "Last updated" date.
We encourage users to review this page periodically.
If you have any questions or concerns regarding this Privacy Policy, please contact us:
Application: PromptShield
Location: Victoria, Australia
Email: mylerler2024@gmail.com
© 2026 PromptShield. All rights reserved.