All Online Tools

56 free browser-local tools by category

PDF 14

📄 PDF Merger Combine multiple PDFs into one 多文件合并拖拽排序一键下载 ✂️ PDF Splitter Split PDF into separate pages 页码范围章节提取独立/ZIP 📉 PDF Compressor Reduce PDF file size 体积压缩图片论文提交限制 🖼️ PDF to Images Export each page as JPG / PNG PDF→图片指定页码ZIP 下载 📄 Images to PDF Bundle images into a single PDF 图片→PDF批量合并手机拍摄 🔄 PDF Rotate Rotate selected pages 旋转方向指定页码批量旋转 🗑️ PDF Delete Pages Remove unwanted pages 删除页面指定页码批量删除 🔢 PDF Reorder Pages Custom page order Custom page order # PDF Page Numbers Add page numbers 页眉/页脚起始页设置字号位置 💧 PDF Watermark Add text watermark 文字水印透明度全页覆盖 🔒 Protect PDF Create password PDF 密码保护开启权限安全加密 🔓 Unlock PDF Remove known password 解除密码恢复访问浏览器端 ✍️ Sign PDF Draw and place signature 手写签名指定页面隐私安全 📝 PDF Extract Text Extract selectable text PDF → 文字指定页码复制/下载

Image 12

🗜️ Image Compressor Compress JPG / PNG / WebP Compress JPG / PNG / WebP 🔁 Format Converter JPG ↔ PNG ↔ WebP ↔ GIF JPG/PNG/WebP质量调整批量转换 ↔️ Image Resizer Resize by pixel or percentage 自定义尺寸锁定比例px/百分比 ✂️ Image Cropper Crop to any aspect ratio 自由裁剪拖拽选区精确尺寸 🪄 Background Remover Local color-key background removal 自动去背景透明 PNG边缘处理 💧 Image Watermark Add text or image watermark 文字水印透明度位置自定义 📱 HEIC to JPG iPhone photos to universal format iPhone 图片HEIC→JPG批量转换 🧩 Image Stitcher Horizontal, vertical or grid layout 横向/纵向多图拼接一键合并 🎨 Color from Image Pick dominant colors / HEX 点击取色HEX/RGB精准采样 ℹ️ Image EXIF View and remove metadata EXIF 信息GPS 位置拍摄参数 ⭐ Favicon Generator Generate favicon assets 多尺寸ICO/PNGZIP 打包 B64 Image Base64 Image to Data URL 图片→Base64复制字符串开发使用

QR Code 3

▦ QR Code Generator Turn text or URL into QR image 文字/链接自定义颜色高清下载 🔎 QR Code Reader Decode QR from uploaded image 图片识别快速解码复制内容 ||| Barcode Generator EAN, Code128 and more EAN/Code128自定义值高清下载

Text 6

📝 Word Counter Words, characters & reading time Words, characters & reading time Aa Case Converter UPPER, lower, Title Case… UPPER, lower, Title Case… ↔ Text Reverser Reverse any text instantly Reverse any text instantly 🧹 Duplicate Remover Remove duplicate lines Remove duplicate lines 📄 Lorem Generator Placeholder text in one click Placeholder text in one click 🔑 Password Generator Strong random passwords Strong random passwords

Utilities 6

🎡 Lottery Wheel Random pick for events & teams 自定义选项随机抽取动画效果文 Simp ↔ Trad Chinese Convert Simplified and Traditional 简→繁繁→简港澳台拼 Hanzi to Pinyin Batch convert with tone marks 汉字→拼音声调标注批量处理 🖼️ Text to Image Export long text as shareable image 文字→图片自定义样式一键下载 ≠ Text Diff Highlight differences side by side 差异对比高亮增删审稿必备 ⏱️ Timestamp Converter Unix time ↔ readable date 时间戳日期转换本地/UTC

Developer 9

{ } JSON Formatter Beautify and validate JSON Beautify and validate JSON B64 Base64 Encoder Encode and decode Base64 编码/解码文本处理快速复制 🔗 URL Encoder Encode and decode URLs URL 编码URL 解码快速处理 # Hash Generator MD5, SHA-256, SHA-512 MD5/SHA多算法快速生成 ID UUID / ULID Bulk ID generator UUID v4批量生成一键复制 JWT JWT Decoder Inspect header and payload JWT 解码Header/Payload可视化查看 .* Regex Tester Live matches and groups 实时测试高亮匹配常用表达式 ⏰ Cron Parser Preview next run times Cron 解析执行时间可读描述 ⇄ CSV ↔ JSON Convert tabular data CSV→JSONJSON→CSV数据转换

Office 3

😀 Emoji Search Search and copy by keyword 关键词搜索一键复制全量 Emoji 📊 Excel Merger Merge multiple Excel files 多表合并保留格式数据汇总 📝 Word Merger Combine multiple Word docs 章节合并docx 输出拖拽排序

More 3

📸 Screenshot Tool In-browser capture & crop In-browser capture & crop 🎨 Color Picker Pick and convert HEX, RGB, HSL colors Pick and convert HEX, RGB, HSL colors 📐 Length Converter Convert mm, cm, m, km, in, ft, yd, mi Convert mm, cm, m, km, in, ft, yd, mi