图片转 PDF
UpBox优盒工具箱，免费图片转 PDF 工具，多张 JPG、PNG、WebP 可排序后合成为一个 PDF，可选 A4 / Letter 与页面留白，本地处理不上传。
无需注册 · 数据不上传No sign-up · nothing uploaded
选择图片Choose images
- 选择图片后即可生成 PDF
输出结果Result
图片数0
原图总大小—
输出页数—
输出大小—
选择图片后即可生成 PDF
本工具所有运算在本地浏览器完成，你的文件、文本不会上传到服务器
工具介绍
图片转 PDF 在浏览器里完成：一次选好图片，调整顺序和页面尺寸，再生成一个多页 PDF。图片不上传，也没有网络请求。 Conversion happens in your browser: choose images, set the order and page size, then build a multi-page PDF. Nothing is uploaded and no request is made.
每张图片占一页，默认铺满 A4 页面并保持比例，四周可选 0 / 24 / 48 pt 留白；也可以选择「跟随图片」，让页面尺寸贴着图片本身。适合把照片、扫描件或截图整理成一份可直接发送的文档。 Each image gets one page. On A4 it is centred and scaled proportionally, with 0/24/48 pt margins; “Fit image” makes the page match the picture instead. Handy for turning photos, scans or screenshots into one document.
- 本地转换不上传Runs locally, no upload
- 多张图片一次导入Import several images
- 可上下调整顺序Reorder before building
- A4 / Letter / 跟随图片A4, Letter or fit image
- 可选页面留白Optional page margins
使用说明
- 点上传区选择图片，或直接把图片拖进来，可一次选多张。Choose images in the drop area or drag them in; several at a time are fine.
- 在列表里用上下箭头调整页序，点垃圾桶移除不需要的图片。Reorder with the arrows and remove unwanted images with the bin icon.
- 选择页面尺寸与留白：A4 适合打印与常规阅读，“跟随图片”不留白边。Pick a page size and margin: A4 suits printing, while Fit image removes the border.
- 点“生成 PDF”，确认输出页数与体积后下载。Build the PDF, check the page count and size, then download it.
常见问题
图片会被上传吗？Are the images uploaded?
不会。读取、绘制和写 PDF 全部在当前页面完成；关掉页面后内存即释放。No. Reading, drawing and writing all happen in this page, and memory is released when you close it.
支持 HEIC 或 RAW 吗？Does it support HEIC or RAW?
不支持。HEIC、RAW 需要浏览器本身能解码，多数桌面浏览器不行；请先转成 JPG 或 PNG。No. HEIC and RAW need browser decoding, which most desktop browsers lack; convert to JPG or PNG first.
一页能放多张图吗？Can one page hold several images?
当前是一张图片一页。需要拼版或九宫格时，请先在其他工具里合成图片，再来转 PDF。Currently one image per page. For grids or collages, combine the images first, then convert.
输出会不会很糊？Will the output look blurry?
页面里的图片按原始像素绘制，不额外降采样；体积主要取决于原图大小，转 PDF 时统一按 JPEG 0.92 编码。Images are placed at their original pixel size without extra downsampling; the file is encoded as JPEG at 0.92.