免费在线工具
15+ 款面向开发者和创作者的免费工具。所有工具都在你的浏览器中运行——无需上传、无需注册、无遥测。
开发者工具
3 款工具Format, encode, and inspect data the way developers actually do.
JSON Formatter & Validator
Beautify, minify, and validate JSON instantly in your browser. 100% client-side, no upload.
Hash Generator
Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes in your browser. No upload.
JWT Decoder
Decode JSON Web Tokens in your browser — inspect header, payload, and signature without a server round-trip.
编码与解码
2 款工具Move data between encodings — Base64, URL, percent — without leaving the browser.
生成器
2 款工具Spin up passwords, UUIDs, and other identifiers with cryptographic randomness.
图像工具
3 款工具Create and tweak images for web, print, and mobile.
QR Code Generator
Generate QR codes for URLs, text, Wi-Fi, and contacts. Download as PNG or SVG.
Image Compressor
Shrink JPG, PNG, or WebP images in your browser — pick quality and max width, see the savings before download.
Color Picker
Pick a color and see HEX, RGB, HSL, and HSV values instantly. Browser-native, no upload, no signup.
文本工具
3 款工具Manipulate text — case, count, placeholder, transform.
Lorem Ipsum Generator
Generate placeholder text by paragraph, sentence, or word count. Classic Lorem Ipsum source.
Case Converter
Convert text between UPPER, lower, Title, camelCase, snake_case, kebab-case, PascalCase, and CONSTANT_CASE.
Word & Character Counter
Count words, characters, sentences, paragraphs, and estimated reading time. Runs locally, no upload.
格式转换
2 款工具Convert between units, formats, and markup — length, mass, temperature, Markdown, and more.