68 免费开发者工具
格式化 JSON，生成哈希，转换数字，压缩图像 —— 所有操作都在您的浏览器中进行，不会上传任何内容。
格式化与压缩
15 工具美化或压缩 JSON、XML、HTML、CSS、JavaScript 和 SQL。
哈希与加密
10 工具生成哈希值，编码/解码数据，并创建安全密码。
数字转换
26 工具在不同数制、颜色格式、分数和罗马数字之间转换。
字符串与文本
9 工具转换、分析和操作文本和字符串。
图像工具
8 工具在浏览器中压缩、转换和检查图像。
About This Site
A collection of free, privacy-first developer and maker tools that run entirely in your browser. Format code, generate hashes, convert number bases, compress images, and turn photos into bead patterns or pixel art — your data never leaves your device. No account, no watermarks, no limits.
Popular tool categories
Frequently asked questions
Are these tools really free?
Yes. Every tool is free with no signup, no usage caps, and no watermarks. Some maker tools (like the bead pattern makers) offer optional PDF downloads — also free.
Do my files and data stay private?
Yes. All processing happens locally in your browser using JavaScript and WebAssembly. Your text, code, and images are never uploaded to a server.
Do the tools work offline?
After the page has loaded, most tools keep working without a network connection because all computation happens on your device.
Can I use the results commercially?
Yes. Output you generate (formatted code, hashes, compressed images, bead patterns) is yours to use however you like, including commercially.
设计上注重隐私
每个工具都在您的浏览器中本地运行。您的文本、代码和图像永远不会离开您的设备 —— 无需账户，无追踪，无需上传。