Privacy Policy

The following categories of data are processed exclusively in volatile browser memory (RAM) and are permanently discarded when you close the tab or refresh the page:

To provide a seamless experience without requiring user accounts or logins, we utilize the HTML5 Web Storage API (localStorage) on your local browser. This storage is completely private to your device and is never synchronized with remote servers:

You can clear all stored preferences at any time by clicking the "Clear history" button on the homepage, or by clearing your site data through your browser settings.

To ensure the site remains fast, accessible, and reliable across all modern devices, we utilize privacy-preserving telemetry through Vercel Web Analytics. Our telemetry configuration has been specifically hardened to respect user privacy:

• Zero Persistent Cookies: No tracking cookies, advertising IDs, or session cookies are created or stored on your device.
• IP Anonymization: IP addresses are truncated and hashed at the edge layer to determine only approximate geographic region (country/city level) and are never stored in raw form.
• No Cross-Site Tracking: We do not track user activities across external websites, nor do we build individual behavioral user profiles.
• Aggregate Metrics Only: Telemetry is strictly limited to aggregate counters: page URLs visited, referring domain, browser engine type, device form-factor, and HTTP response codes.

To ensure our suite of 52 in-browser utilities remains completely free and accessible without paid subscriptions, we may display advertisements served by third-party advertising networks, including Google AdSense. In accordance with Google Publisher Policies and privacy regulations, we provide the following required disclosures:

• Third-Party Cookies: Third-party vendors, including Google, use cookies and web beacons to serve ads based on a user's prior visits to this website or other websites on the Internet.
• Personalized Ad Serving: Google's use of advertising cookies enables it and its partners to serve ads to our users based on their visits to www.manjurul.com and/or other sites across the World Wide Web.
• User Opt-Out Controls: Users may opt out of personalized advertising at any time by visiting Google Ads Settings. Alternatively, users can opt out of third-party vendors' use of cookies for personalized advertising by visiting www.aboutads.info or Your Online Choices (Europe).
• Consent Management (EEA, UK & California): For visitors located in jurisdictions requiring explicit consent (such as the EU/EEA under GDPR, the UK under UK GDPR, and California under CCPA/CPRA), we deploy Google-certified Consent Management Platforms (CMP) to collect and record your granular ad consent choices.

All HTML, CSS, JavaScript, and Web Worker assets are prerendered and served via an edge Content Delivery Network (CDN). We enforce strict HTTP security headers to protect your browser session:

• Strict-Transport-Security: Enforces HTTPS with HSTS preload, preventing SSL-stripping attacks.
• X-Frame-Options: SAMEORIGIN: Prevents unauthorized framing and clickjacking attacks.
• X-Content-Type-Options: nosniff: Prevents MIME-type confusion attacks.
• Permissions-Policy: Explicitly disables camera, microphone, geolocation, and browsing-topics sensor access.

Our operational data policy is straightforward:

• We do not collect personal data: No account registration, email newsletter prompts, or payment credentials are requested.
• We do not sell personal data: We do not sell, rent, monetize, or broker your personal information or usage data under any circumstances.
• We do not share data with AI training pools: Your text, code, images, and files are never ingested, indexed, or shared with large language models (LLMs) or third-party training datasets.

Whether you reside in the European Union (GDPR), the United Kingdom (UK GDPR), California (CCPA/CPRA), or other privacy-conscious jurisdictions, Manjurul adheres to the highest standards of data minimization.

Because we do not maintain accounts, identities, or server-side databases of your visits, there is no identifiable dossier to request, rectify, or delete. If you ever contact us via email, you have the right to request immediate deletion of our email correspondence at any time.

Manjurul is intended for general audiences, students, developers, and professionals. We do not knowingly solicit, collect, or process personal data from children under the age of 13 (or under 16 in applicable jurisdictions). In keeping with our zero-server model, children can safely utilize our educational and computational tools without risk of data harvesting.

All client-side operations benefit from modern browser process isolation and sandboxing. File parsers (such as PDF.js and image decoders) run in restricted memory scopes. We bundle our dependencies locally rather than loading executable scripts from external unverified CDNs, protecting you against supply-chain tampering.

We review and update this Privacy Policy periodically to reflect technical enhancements or regulatory requirements. When updates are published, the "Effective Date" at the top of this document will be revised accordingly.

If you have questions, feedback, or verification inquiries regarding our privacy standards, please reach out to our data protection contact at contact@manjurul.com or visit our Contact & Support page.