Official Transparency NoticeEffective: July 2, 2026Last Reviewed: October 2026

Contact & Support

Have a question, identified a calculation discrepancy, want to suggest a new browser utility, or need to send a legal notice? Reach our engineering and editorial team directly.

Primary Channel

Direct Email

Reach our maintainers directly at contact@manjurul.com.

Response Target

24–48 Hours

Typical turnaround time for technical, legal, and privacy inquiries.

Privacy Focus

Zero Tracking

No intrusive marketing forms or third-party CRM trackers.

Community

Open Feedback

Tool suggestions, algorithm corrections, and feature requests welcome.

1

Direct Communication Channels

We operate without clunky third-party ticketing forms or marketing automation funnels to preserve your privacy. For all technical, legal, and operational inquiries, please email our team directly:

Official Contact Email

contact@manjurul.com

Expected turnaround time: 24 to 48 business hours. All emails are reviewed by our core maintainers. For privacy questions, please consult our Privacy Policy.

2

Categorized Inquiry Guidelines

To help us expedite your request, choose the appropriate category below to see recommended details:

3

How to Report a Bug or Calculation Error

When reporting a technical problem, including the following specifics allows us to diagnose and patch the issue swiftly:

  • Tool URL: The specific page URL (e.g. /creatinine-clearance-calculator).
  • Environment: Your operating system (macOS, Windows, Linux, iOS, Android) and browser version (Chrome 124, Safari 17, Firefox 125).
  • Sample Input: The non-sensitive input string, formula values, or test file that caused the unexpected result.
  • Expected vs. Observed Result: What you expected the tool to calculate or render versus what actually occurred.
  • Console Output: Any red error messages logged to your browser's Developer Console (F12 → Console).
4

Requesting New Tools or Formats

We are constantly expanding our collection of in-browser utilities. When suggesting a tool, please consider:

  • Can the tool execute 100% locally in the browser without requiring external paid server APIs?
  • What common file formats, standard specifications, or mathematical formulas should it support?
  • Who is the primary audience (developers, designers, students, researchers, everyday web users)?
6

Responsible Security Vulnerability Disclosure

We value the contributions of security researchers. If you discover a security vulnerability or header misconfiguration on Manjurul, please report it responsibly:

  • Email details to contact@manjurul.com with the subject [SECURITY DISCLOSURE].
  • Provide reasonable time for our team to remediate the issue prior to public disclosure.
  • Do not attempt to access other users' devices or disrupt our edge hosting infrastructure.
7

Accessibility & Usability Inquiries

We are dedicated to ensuring digital accessibility for all users, including individuals with visual, auditory, motor, or cognitive disabilities. We aim to conform with WCAG 2.1 AA guidelines across all 52 tools. If you encounter accessibility barriers, keyboard navigation traps, or screen reader difficulties, please let us know so we can implement remediations promptly.

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Support & Service FAQ

Can I use tool outputs for commercial client projects?

Yes. You retain 100% intellectual property ownership of all minified code, converted images, generated SVG assets, and calculations. You are free to incorporate them into commercial projects, client deliverables, or proprietary applications without licensing fees.

Do you offer paid enterprise or dedicated API endpoints?

Our tools are intentionally engineered to execute client-side in the browser to maintain zero-cost and total data privacy. We do not provide server-side cloud APIs. If you need offline capability, you can install the website as a Progressive Web App (PWA) on your device.

How do I suggest a new calculator or converter?

Send an email to contact@manjurul.com with your idea, the mathematical formula or transformation specification, and any reference documentation.

Questions or Clarifications?

If you have any questions regarding this policy or our privacy-first in-browser architecture, please reach out to us at our Contact page or email contact@manjurul.com.