Feature: Added QR code/barcode recognition and random string generation functions

- Added QR code/barcode recognition function, supporting drag-and-drop, image pasting, and scrolling preview
- Added a random string generation feature, supporting custom quantity, length, and character sets
- Update the homepage layout to display 4 cards per row and optimize the icons
- Update the version number to 2.2.0 and related documentation

Author: sunquakes

CHANGELOG.md

@@ -4,6 +4,30 @@ All notable changes to this project will be documented in this file.
 
 ---
 
+## [2.2.0] - 2026-04-23
+
+### Added
+- **QR/Barcode Decode** - Decode QR codes and barcodes from images
+  - Image upload via file picker
+  - Drag-and-drop image support
+  - Ctrl+V paste from clipboard
+  - Scrollable image preview for large images
+  - Copy decoded content button
+  - Click placeholder to upload images
+- **Random String Generator** - Generate random strings with configurable options
+  - Configurable count (default: 1) and length (default: 8)
+  - Character set options: lowercase, uppercase, numbers, special characters
+  - Secure random number generation using RandomNumberGenerator
+  - Copy and clear result buttons
+- **Home Page Layout** - Updated to 4 cards per row
+
+### Changed
+- **Home Page Icons** - Updated icons for better visual clarity
+  - Random String: List icon (fa-list)
+  - String Escape: Exchange icon (fa-exchange)
+
+---
+
 ## [2.1.0] - 2026-04-17
 
 ### Added

README.md

@@ -23,11 +23,13 @@
 
 - **MD5 Hash Calculator** - Calculate 32-bit and 16-bit MD5 hashes (uppercase/lowercase)
 - **Barcode Generator** - Generate CODE 128 barcodes
-- **QR Code Generator** - Generate QR codes for text/URLs
+- **QR Code Generator** - Generate QR codes for texts/URLs
 - **Base64 ↔ Image** - Convert between Base64 strings and images
 - **JSON Formatter** - Format, expand, and collapse JSON data
 - **URL Encode/Decode** - Encode and decode URL strings
 - **String Escape/Unescape** - Escape and unescape special characters
+- **QR/Barcode Decode** - Decode QR codes and barcodes from images
+- **Random String Generator** - Generate random strings with configurable options
 - **Handwritten Signature** - Draw signatures and convert to Base64 or save as images
 - **RESTful API** - All tools accessible via HTTP API for AI agent integration
 
@@ -170,13 +172,13 @@ MIT License
 
 ## Version
 
-**Current Version:** 2.1.0
+**Current Version:** 2.2.0
 
-### What's New in 2.1.0
-- ✨ **JSON Compress** - Compress JSON to compact single-line format
-- 📋 **Enhanced Copy Buttons** - Clear visual distinction with arrow icons
-- 🌐 **Full i18n Support** - Complete internationalization for all UI elements
-- 🎨 **Improved UX** - Better button layout and visual feedback
+### What's New in 2.2.0
+- 🔍 **QR/Barcode Decode** - Decode QR codes and barcodes from images with drag-and-drop and paste support
+- 🎲 **Random String Generator** - Generate random strings with configurable character sets
+- 📐 **Home Page Layout** - Updated to 4 cards per row for better screen utilization
+- 🎨 **Improved Icons** - Updated icons for better visual clarity
 
 ---
 

README_ZH.md

@@ -27,6 +27,8 @@
 - **JSON 格式化** - 格式化、展开、折叠 JSON 数据
 - **URL 编码/解码** - 对 URL 字符串进行编码和解码
 - **字符串转义/反转义** - 转义和反转义特殊字符
+- **二维码/条形码识别** - 从图片中识别和解析二维码、条形码
+- **随机字符串生成** - 生成可配置选项的随机字符串
 - **手写签名** - 绘制签名并转换为 Base64 或保存为图片
 
 ## 安装
@@ -107,13 +109,13 @@ Apache License 2.0
 
 ## 版本
 
-**当前版本：** 2.1.0
+**当前版本：** 2.2.0
 
-### 2.1.0 新功能
-- ✨ **JSON 压缩** - 将 JSON 压缩为紧凑的单行格式
-- 📋 **增强复制按钮** - 使用箭头图标清晰区分复制来源
-- 🌐 **完整国际化** - 所有界面元素完全支持多语言
-- 🎨 **优化用户体验** - 更合理的按钮布局和视觉反馈
+### 2.2.0 新功能
+- 🔍 **二维码/条形码识别** - 支持拖拽、粘贴图片，滚动预览，一键复制识别结果
+- 🎲 **随机字符串生成** - 支持自定义数量、长度、字符集选项
+- 📐 **首页布局优化** - 改为每行 4 个卡片，提升屏幕利用率
+- 🎨 **图标优化** - 更新首页图标，更贴合功能
 
 ## 更新日志