SubmitShield - Pre-Submit Guard

Locally checks for personal information, API keys, secrets, and payment or consent risks before you submit.

SubmitShield - Pre-Submit Guard is a Chrome extension that checks for risks before you submit, post, paste, or upload content in your browser. It is designed for forms, AI chats, email, social posts, checkout pages, job applications, account registrations, terms pages, and consent screens. Everyday browser use involves more sensitive information than we often realize: API keys pasted into AI chats, personal information included in emails, phone numbers left in social posts, excessive information requested by job forms, auto-renewal terms on checkout pages, or no-refund conditions hidden in purchase flows. SubmitShield helps you pause before sending. The extension checks text locally in your browser. It does not send your prompts, emails, posts, form contents, or scan matches to external AI APIs, ad networks, or remote servers. SubmitShield can help detect: - API keys and secrets - Private keys - GitHub, AWS, Slack, Stripe, OpenAI, and Anthropic-style keys - JWTs and secret environment values - Payment card numbers - Email addresses, phone numbers, addresses, and Japanese My Number candidates - Confidential or internal-only wording - Client lists, NDA-related wording, and unpublished information - Subscription and auto-renewal language - No-refund or no-cancellation terms - Arbitration and class action waiver language - Third-party data sharing or data sale wording - Risky file names before upload When a high-risk item is found, SubmitShield pauses the action and shows a review screen. You can stop, review the finding, continue if you understand the risk, or mask sensitive text when masking is available. Medium-risk findings are shown as warnings so the extension does not interrupt every normal workflow. Benefits of installing SubmitShield 1. Reduce accidental API key and secret leaks Developers, freelancers, startup teams, and technical users often move between code editors, AI chats, documentation, email, and web forms. It is easy to paste an API key, token, private key, or environment variable into the wrong place. SubmitShield helps detect those secrets before they are sent. 2. Review personal information before sharing SubmitShield can warn when your text includes personal information such as email addresses, phone numbers, postal codes, addresses, or sensitive ID-like numbers. This is useful before posting publicly, sending information to AI chats, filling job applications, submitting support forms, or registering for unfamiliar services. 3. Safer AI chat usage AI assistants are useful, but users can accidentally paste client information, internal notes, private credentials, source code secrets, or personal data into chat prompts. SubmitShield adds a local pre-send check before those prompts leave the browser. 4. Catch subscription and checkout risks Checkout and registration pages may include auto-renewal, recurring billing, no-refund, cancellation, arbitration, or third-party data sharing terms. SubmitShield highlights these signals so you can review them before agreeing or paying. 5. Add a safety check to email and social posting Before sending an email, posting on social media, or sharing a professional update, SubmitShield can help identify sensitive information, confidential wording, or risky statements. It works as a lightweight review layer before publication. 6. Local-first privacy design SubmitShield checks content in the browser. It does not upload your text to a cloud AI service. The extension stores only local settings and a redacted summary of the most recent scan result. Raw form text, prompts, emails, posts, and sensitive matches are not stored by SubmitShield. 7. Minimal interruption SubmitShield normally stays out of the way. It uses a small badge and only opens a review dialog when a high-risk item is detected. You can also mute checks on specific sites if you encounter repeated false positives. 8. Free core protection SubmitShield is currently offered as a free extension. Its core checks for API keys, secrets, personal information, payment card numbers, confidential wording, subscription terms, and consent risks are available without a paid plan. No ads. No data selling. No hidden upload of your input. Who is SubmitShield for? - People who use AI chats regularly - Developers and engineers - Freelancers and consultants - Students working with code or applications - Small business owners - People who use Gmail, Slack, Notion, LinkedIn, X, or other web tools - Users who often fill forms, job applications, or account registrations - People who want help spotting subscription and consent risks - Families who want an extra safety layer for everyday browsing - Anyone who wants a final check before sending sensitive information Important note SubmitShield is a safety aid, not a guarantee. It cannot detect every scam, data leak, contract risk, or accidental disclosure. Its detection is based on local rules and heuristics, so false positives and false negatives can happen. For important financial transactions, crypto activity, legal agreements, personal data submissions, or business-confidential information, always verify the recipient, URL, terms, and content yourself. SubmitShield gives you one more chance to stop before sending.