图片合并 PDF（多图一键转 PDF，支持排序与页面规格）
免费在线图片转 PDF 合并工具，多张 JPG/PNG 按顺序合并为单个 PDF，支持 A4 / Letter / A3 / 跟随图片尺寸，可调横竖向与页边距，纯浏览器本地处理（pdf-lib）
Click or drag images here — multi-select supported
All processing runs locally; images never leave your browser.
Upload images, then click Generate
User Guide
✨ Features
• Merge multiple images into a single PDF • Drag-sort / move up-down / delete one • A4 / Letter / A3 / Fit-to-image • Tunable orientation & margin; pdf-lib runs locally
📖 How to Use
Step 1
Upload or drop multiple images
Step 2
Reorder with up/down arrows
Step 3
Choose page size and click Generate
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