About Jingzhaoyuan Tools
Jingzhaoyuan Tools is a small collection of free, privacy-first online utilities for finance professionals, developers, and anyone who needs quick, reliable text and data manipulation. All tools run entirely in your browser — your data never leaves your device.
What we offer
The site provides a curated set of tools across these categories:
- Data conversion: Weight Converter, Unix Timestamp Converter
- Text & encoding: JSON Formatter, Base64 / URL Encoder
- Security primitives: Hash Generator (MD5, SHA family), UUID Generator
- Internal tooling: SAP Data Import, DBX Console (access-restricted)
Our principles
- Privacy by default. Every tool processes data client-side. No uploads, no logs of user input.
- Free, no signup. No accounts, no paywalls, no upsells.
- Transparent. No third-party trackers. No fingerprinting. No dark patterns.
- Fast and lightweight. Native browser APIs where possible. No bloated frameworks.
Who built it
Jingzhaoyuan Tools is built and maintained by an independent developer as a personal side project. The site is not affiliated with any larger company, and it is not a commercial product.
Contact
We welcome feedback, bug reports, and feature suggestions.
- General inquiries: contact@jingzhaoyuan.com
- Privacy concerns: contact@jingzhaoyuan.com (see also our Privacy Policy)
- Abuse / security reports: contact@jingzhaoyuan.com
We typically respond within a few business days.
Roadmap
Tools are added based on need. Current candidates under consideration:
- JWT decoder / verifier
- CSV ↔ JSON converter
- Color picker / converter (HEX ↔ RGB ↔ HSL)
- QR code generator
Have a suggestion? Email us.
Open an issue
If something is broken or behaves incorrectly, please include the tool name, the input you used (or a redacted sample if it contains sensitive data), and the observed output.