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
Expected turnaround time: 24 to 48 business hours. All emails are reviewed by our core maintainers. For privacy questions, please consult our Privacy Policy.
Categorized Inquiry Guidelines
To help us expedite your request, choose the appropriate category below to see recommended details:
Bug Reports & Errors
Report unexpected calculation results, parser crashes, or browser rendering discrepancies.
Feature & Tool Requests
Suggest new in-browser calculators, converters, minifiers, or expanded export formats.
DMCA & Legal Notices
Submit intellectual property inquiries, trademark notices, or formal legal correspondence.
Accessibility Feedback
Share suggestions for screen reader compatibility, keyboard navigation, or color contrast.
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).
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)?
DMCA, Copyright & Legal Notices
Manjurul respects intellectual property rights. If you believe that content on our website infringes upon your copyright or trademark, please submit a formal notice containing:
- Physical or electronic signature of the authorized copyright holder or legal representative.
- Clear identification of the copyrighted work claimed to have been infringed.
- The exact URL on Manjurul where the allegedly infringing material is located.
- Your contact information (name, postal address, telephone number, and email address).
- A statement that you have a good-faith belief that the disputed use is not authorized by the copyright owner, its agent, or the law.
- A statement, under penalty of perjury, that the information in your notice is accurate.
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.comwith 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.
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.
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.
© 2026 Manjurul. All rights reserved.