About Us
Welcome to Qudo Tools.
Qudo is a website that provides free, simple, and practical online tools. We hope to help users process text, data, images, dates and daily calculation tasks more efficiently through clear and easy-to-use web tools, without installing software or registering an account.
https://qudo.cc
What We Provide
Text & Writing
Help users count, organize and convert text content, such as:
- Word and character count
- English case conversion
- Duplicate line removal
- Text space cleaning
- Reading time calculation
Developer & Webmaster
For developers, website operators and digital marketers, such as:
- JSON formatting and validation
- Unix timestamp conversion
- UTM link generation
- Encoding and data conversion tools
- AES encryption/decryption
Calculator & Image
Help users complete common calculations and image size processing, such as:
- Percentage calculation
- Image aspect ratio calculation
- Image proportional scaling
- Common platform image size lookup
Why We Created Qudo
- Too many ads on pages, interfering with normal use
- Complex operation steps
- Unclear function descriptions
- Cannot be used conveniently on mobile phones
- Not clear about how user data is processed
- Can only complete single operations, lacking practical examples
Therefore, we created Qudo, hoping to make online tools more: simple, fast, clear, practical, and privacy-respecting. Our goal is not to simply increase the number of tools, but to make every tool truly solve a specific problem.
Simple and Easy to Use · Clear and Transparent · Local Processing First · Multi-device Support · Continuous Improvement
Simple and Easy to Use
Users do not need to register an account. After opening the tool page, you can directly use the main functions.
Clear and Transparent
Each tool page will try to explain: what the tool can do, how to use it, practical processing examples, calculation or conversion rules, applicable scenarios, function limitations, data and privacy handling, and frequently asked questions.
Local Processing First
When technical conditions permit, Qudo prefers to use browser-local processing. For example, text statistics, format conversion and some image information reading can be completed directly in the user's device without submitting input content to this site's servers. Different tools may have different processing methods, please refer to the instructions on specific tool pages. For more information on information processing, please read our privacy policy.
Multi-device Support
We strive to make tools work properly on desktop computers, laptops, tablets and mobile phones.
Continuous Improvement
We will update tool functions and description content based on actual usage, user feedback, browser changes and technical standards.
Data and Privacy
We value the privacy of user input content. Unless otherwise specified on specific tool pages, most tools will process data directly in the browser. Qudo will not actively save text, images or calculation content entered by users in local tools.
Please do not enter passwords, API keys, bank card information, ID card numbers, trade secrets or other highly sensitive data in any online tool.
Privacy Policy →Content and Calculation Accuracy
We will do our best to ensure that tool functions, calculation formulas and description content are accurate and reliable, but we cannot guarantee that all results are completely error-free in any situation.
We will do our best to ensure that tool functions, calculation formulas and description content are accurate and reliable, but we cannot guarantee that all results are completely error-free in any situation.
- Legal advice
- Medical advice
- Financial or investment advice
- Accounting or tax opinions
- Professional engineering conclusions
- Other opinions requiring judgment by licensed professionals
For important decisions, please verify with authoritative sources or consult qualified professionals. If you find calculation errors, translation issues, function anomalies or inaccurate content, please contact us.
Advertising Notice
To support website server, domain, development and maintenance costs, Qudo may display ads through third-party advertising services such as Google AdSense. Ad content is provided by third-party advertising service providers. Unless explicitly stated, Qudo does not represent, guarantee or recommend the products and services promoted in ads.
Ads will not change the calculation rules of tools. We will not ask users to click ads to support the website. For information on advertising cookies and data processing, please see our privacy policy.
External Links
Some pages may contain links to third-party websites, documents or services. These links are usually provided to offer reference materials or help users further understand related content. Third-party websites are responsible by their respective operators, and Qudo cannot control their content, availability and privacy measures. Before visiting third-party websites, please check their terms of use and privacy policy yourself.
Contact Us
If you have the following needs, please feel free to contact us: report tool errors, suggest features, report translation issues, report broken links, report privacy or security issues, suggest content corrections, or make other reasonable inquiries.
Website Name: Qudo; Website Address: https://qudo.cc; Operator: Jee.Xue; Contact Email: xuejiazhi@gmail.com; Country or Region: Xixiang, Bao'an District, Shenzhen, Guangdong, China
About This Page
This page will change as Qudo's functions, operations and service scope evolve. Important updates will be announced on this page.
Last Updated: September 16, 2026