Have feedback, found a bug, or want to collaborate? We'd love to hear from you.
📧 Email: cyh0126@gmail.com
We aim to reply within 3–5 business days; please bear with us if there's a short delay during busier periods.
Bug reports: If a calculation looks wrong, a page isn't displaying correctly, or a link is broken, please include the device and browser you're using along with a screenshot if possible — that context makes it much faster for us to track down the issue.
Feature requests: If there's a tool you use often elsewhere but can't find here, let us know — we review suggestions and consider them for future updates.
Partnership inquiries: For advertising partnerships, content licensing, or other business collaboration, please briefly describe the proposal and how to reach you.
Privacy questions: If you have questions about how data is handled or how cookies are used, check the Privacy Policy page first, or feel free to email us directly.
The site is currently maintained by a single developer, and all communication goes through the email address above — there's no live chat or social media inbox at this time. When writing in, it helps to mention which specific tool you were using and the steps that led to the issue, since that's usually the fastest path to a fix.
Daily Toolkit is designed so that most tools run directly in your browser. When a calculation, conversion, image task, or other feature does not behave as expected, we first try to reproduce the issue and then check the input conditions, browser environment, and underlying tool logic. For formula-based tools, we also review whether the displayed result matches the calculation method used by the page.
If an issue appears only on a particular device or browser, please include the operating system, browser version, and the steps that led to the problem. Those details are much more useful for troubleshooting than a general report that a tool simply does not work.
Only send information that is necessary to explain the problem. Do not include passwords, payment-card numbers, identity-document numbers, account credentials, or other sensitive information in a support request. If you attach a screenshot, remove personal account details and unrelated private information first.
For information about cookies, advertising technology, and browser-side data handling, please review our Privacy Policy. For tools that relate to health, finance, or other professional decisions, please also review the limitations described in our Terms.