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Secure Authenticated Page Sanitizer API
A developer-focused API and browser extension that captures authenticated web pages (like dashboards or private receipts) and automatically scrubs session cookies, user IDs, and hidden PII before generating a shareable archive. It bridges the gap between saving useful private content and preventing credential leakage.
Why this matters
You are a researcher or corporate analyst who frequently needs to capture and share data found inside authenticated portals, like financial dashboards or private forum posts. When you use standard tools to save these pages, they silently package your active session cookies, authentication tokens, and personal identifiers into the file. If you email that file to a colleague or client, you are unknowingly handing them the keys to your account. Existing archiving solutions prioritize exact replication over safety, forcing you to choose between losing the data or risking a severe security breach.
- · Built for Researchers, journalists, and corporate compliance teams who need to archive and share authenticated web views securely..
- · Most likely monetization: SaaS subscription.
The Pain · Narrative
You are a researcher or corporate analyst who frequently needs to capture and share data found inside authenticated portals, like financial dashboards or private forum posts. When you use standard tools to save these pages, they silently package your active session cookies, authentication tokens, and personal identifiers into the file. If you email that file to a colleague or client, you are unknowingly handing them the keys to your account. Existing archiving solutions prioritize exact replication over safety, forcing you to choose between losing the data or risking a severe security breach.
Score Breakdown
Market Signal
Go-to-Market
Corporate OSINT researchers and compliance analysts who must document evidence behind login screens.
~100K active professionals globally in intelligence, journalism, and compliance.
Targeted outreach to OSINT and infosec communities via specialized newsletters and Twitter.
$29/month for professional use
Secure 15 active beta users from the OSINT community testing the browser extension safely.
MVP Scope · 1–2 weeks
- Define a strict JSON schema for identifying common session token patterns and hidden PII fields.
- Develop a simple browser extension skeleton that can extract the current DOM and local storage.
- Write a sanitization script that strips out scripts, hidden inputs, and known token formats.
- Build a basic backend API to receive the raw HTML and apply further sanitization rules.
- Create a test suite of 5 different mock authenticated dashboards to validate scrubbing.
- Integrate a visual diffing library to highlight which elements were removed from the original page.
- Implement an export function that packages the sanitized DOM into a single, self-contained HTML file.
- Build a simple landing page explaining the security risks of sharing raw web archives.
- Add a user authentication layer to the backend for managing saved templates.
- Launch the beta extension privately to a targeted group of infosec professionals.
Differentiation
Why This Might Fail
Self-rebuttal — the most important trust signal
- 1The sheer variety of ways modern frontend frameworks embed state makes 100% reliable automated scrubbing virtually impossible.
- 2Users who care deeply about security may refuse to trust a proprietary closed-source tool with their authenticated data.
- 3Aggressive sanitization might render the resulting HTML files visually broken or unreadable, destroying their value.
Evidence Summary
How AI synthesized this insight — no verbatim quotes
Multiple commenters expressed deep concern about the security implications of saving personal web content. They highlighted that archives inherently contain reflected session cookies and PII, making sharing these files a massive security risk. The community explicitly noted that anonymizing this data is incredibly difficult, leaving a clear gap for a tool that handles this securely by default.
Action Plan
Validate this opportunity before writing code
Recommended Next Step
Build
Strong demand signals detected. Real pain, real willingness to pay — start building an MVP.
Landing Page Copy Kit
Ready-to-paste copy based on real Reddit community language — no editing required
Headline
Secure Authenticated Page Sanitizer API
Sub-headline
A developer-focused API and browser extension that captures authenticated web pages (like dashboards or private receipts) and automatically scrubs session cookies, user IDs, and hidden PII before generating a shareable archive. It bridges the gap between saving useful private content and preventing credential leakage.
Who It's For
For Researchers, journalists, and corporate compliance teams who need to archive and share authenticated web views securely.
Feature List
✓ Browser extension for authenticated capture ✓ Automated DOM sanitization engine (removing tokens/IDs) ✓ Visual diff tool showing exactly what data was scrubbed ✓ Export to standard self-contained HTML or PDF
Where to Validate
Share your landing page in r/HN · self hosted — that's exactly where these pain points were discovered.
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