About This Site

Welcome to leoi.org, a personal website independently built, operated, and maintained by LeoLee (李锦涵). The site focuses on front‑end technology practice, creative web interactions, diverse web functionality development, and digital content sharing. It adheres to a minimalist, efficient, and purely practical philosophy—no redundant ads, no malicious tracking, just a personal web space dedicated to content and experience. All pages are built with native front‑end technologies, continuously exploring lightweight design and broader possibilities.

Philosophy & Content Sharing License

This site centers on personal technical learning, creative presentation, and functional experimentation. All original content—including code, design, and materials—is strictly non‑commercial. It aims to share a clean web experience, useful web features, and original technical outcomes. The pages follow lightweight design principles while balancing compatibility and interactivity. All site content (including the source code) is shared under the Creative Commons Attribution‑NonCommercial‑ShareAlike 4.0 International (CC BY‑NC‑SA 4.0) license.

CC License Core Summary

1. Attribution: You must credit the original author, LeoLee (Li Jinhan), and the source leoi.org, and retain any original identifiers when using, reposting, or adapting original content.
2. NonCommercial: You may not use the original content for any commercial purpose, including but not limited to commercial sales, advertising, commercial project development, or for‑profit redistribution.
3. ShareAlike: If you modify, adapt, or create derivative works based on this site’s content, you must distribute your contributions under the same CC BY‑NC‑SA 4.0 license.
4. This license applies only to original content on this site. Third‑party services, external materials, and APIs are subject to their respective providers’ terms.

Privacy Policy

To fully protect visitor privacy rights, this site adheres to principles of openness, transparency, and legality. This privacy policy clearly informs visitors about all rules regarding data collection, storage, use, and protection, in compliance with relevant laws and regulations.

1. Data Collection Scope and Methods

This site strictly follows the principles of minimal necessity and legal compliance, collecting only non‑personal data essential for core functionality. No sensitive personal information is actively gathered.

1. Automatically collected non‑personal data: When you visit, the server and third‑party statistics service (51LA) automatically collect generic, non‑identifiable data, including browser type, operating system, access time, pages visited, IP address (used only for regional statistics, not precise location), and network operator. This data is used solely for site maintenance, traffic analysis, and experience optimization, and not for any other purpose.
2. Actively submitted personal information: Only when you voluntarily submit a message via the guestbook are you required to provide a nickname, email, and message content. This information is used exclusively for replying to your message and will not be disclosed externally; only the site owner can view it.
3. Cookies and local storage: Only necessary first‑party cookies and localStorage are used to store non‑private data such as theme preferences, layout settings, and page state. No personal identity, account, password, or location data is stored. There are no third‑party advertising or tracking cookies.

2. Data Usage Rules

1. Automatically collected data is used only for routine maintenance, troubleshooting, traffic analysis, and user experience improvement. It is never used for commercial promotion, user profiling, or targeted marketing.
2. Guestbook information is used solely for communication and replies. Without explicit consent, it will never be shared, sold, transferred, or disclosed to any third party.
3. Local storage data only enhances your browsing experience; it is not uploaded to any third‑party server or used for tracking.

3. Third‑Party Service Privacy Notes

All third‑party services integrated into this site have compliant privacy mechanisms. Their data collection and usage follow their own privacy policies. This site only invokes necessary functions and does not participate in third‑party data processing.

1. Statistics service (51LA): Follows 51LA’s official privacy policy, collecting only anonymous access data for traffic statistics.
2. Guestbook service (EmailJS): Follows EmailJS’s privacy policy, used only for message transmission; no personal data is stored.
3. Various storage, API, and deployment services: Follow the privacy policies of Cloudflare, Zhipu AI, Volcengine, and respective image/file hosting platforms. They are used only to implement site features; this site does not obtain visitors’ private data from these third parties.

4. Data Protection Measures

1. This site relies on Cloudflare’s professional security services to establish domain safety and server protection, guarding against cyberattacks, data breaches, and unauthorized intrusion.
2. Access to data is strictly limited. Only the site owner can view voluntarily submitted guestbook information. All such data is managed locally and encrypted.
3. Security vulnerabilities are regularly reviewed, and protection mechanisms are continuously optimized to prevent illegal disclosure or misuse of private data.

5. Visitor Privacy Rights

1. Visitors may disable cookies and local storage via browser settings. Disabling these may affect personalization but will not impair core site functionality.
2. Visitors may contact the site owner at any time to inquire about, modify, or delete personally submitted guestbook information.
3. If you do not agree with this privacy policy, please discontinue use of this site immediately.

6. Privacy Policy Updates

This privacy policy may be updated periodically due to legal changes or site functionality adjustments. The updated policy will be posted on this page and becomes effective immediately upon publication, without separate notice.

Cookie Policy

1. First‑party necessary cookies only: This site uses only first‑party essential cookies. There are no third‑party advertising, statistics, tracking, or marketing cookies, and cookies are not used to collect personal privacy information.
2. Purpose of cookies: Cookies are used solely to remember page personalization settings and maintain interactive states, thereby improving browsing experience. No other uses.
3. Disabling and clearing: Visitors may clear or disable cookies at any time through browser settings. This will not affect core site functionality.

Deployment & Acknowledgements

From local coding and initial testing to official launch, feature refinement, security hardening, and data services—this site could not exist without the support of numerous platforms and individuals. Sincere gratitude goes to all service providers and creators who have contributed.

• Thanks to Jyshare for live preview rendering during local development, enabling efficient front‑end coding and debugging.
• Thanks to Codepen for providing initial static hosting tests, validating the site’s early deployment.
• Thanks to Juejin Code for static hosting support in the domestic environment during the initial phase, ensuring stable access.
• Thanks to Cloudflare for comprehensive technical services: static site deployment, Lchat database configuration, email DNS resolution, and domain security protection.
• Thanks to Doubao for full‑spectrum guidance—code writing, feature configuration, domain acquisition, security, legal aspects, architecture, and optimization.
• Thanks to DeepSeek for professional technical support in code development, feature implementation, and logic optimization.
• Thanks to Imgchr for stable image hosting and external linking services, ensuring smooth image loading.
• Thanks to videotourl for integrated storage and external linking of images, audio, video, and PDF files.
• Thanks to Lanzou Cloud for reliable file hosting, supporting site file‑sharing features.
• Thanks to Bilibili for image and web video resource storage and playback support.
• Thanks to Volcengine for providing API services for the early AI assistant feature.
• Thanks to Zhipu AI Open Platform for stable API support for the current AI assistant.
• Thanks to EmailJS for comprehensive technical services enabling the guestbook message handling.
• Thanks to 51LA for professional, compliant website statistics, aiding continuous improvement.
• Thanks to Spaceship, the domain registrar, for stable domain registration and management.
• Thanks to NetEase Free Enterprise Email for providing a dedicated derivative email service for the domain, keeping communication channels open.
• Thanks to photographer syx (🥰) for the original background images that give the site its unique visual texture.
• Finally, thanks to site owner LeoLee (Li Jinhan) for the entire planning, development, deployment, maintenance, and iteration of this website.

Disclaimer

1. Site maintenance: This is a personal, non‑commercial site. Continuous feature optimization, content updates, and page maintenance are ongoing. Occasional access interruptions or feature adjustments are possible; your understanding is appreciated.
2. Original content protection: All original content is protected by the applicable Creative Commons license and relevant laws. Unauthorized reproduction, reposting, commercial use, or alteration is prohibited.
3. Third‑party services: All integrated third‑party services are compliant public resources. If any content raises infringement or compliance concerns, please contact the site owner for removal or modification.
4. Visitor consent: By voluntarily accessing this site, you agree to the content sharing license, privacy policy, and related statements.

Thank you for visiting and for your support—your browsing drives continuous improvement. For any questions, please consult the site’s AI assistant or leave a message in the guestbook. Thank you again.